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  • Why is Request not available for my PDF request?

    - by Beska
    We're trying to create a .NET aspx page that will have a PDF within it. Doing this by hardcoding it is easy. <object height="1250px" width="100%" type="application/pdf" data="our.pdf"> <param value="our.pdf" name="src" /> <param value="transparent" name="wmode" /> </object> (don't worry too much about the transparent thing...we're doing that for other reasons...but I include it here "just in case".) The problem is when we want to generate the PDF dynamically. Our code to populate the literal on the front end looks like this: ltrPDF.Text = String.Format("<object height=\"1250px\" width=\"100%\" type=\"application/pdf\" data=\"ourPdfGenerator.aspx?var0={0}&var1={1}&var2={2}\">", var0, var1, var2); ltrPDF.Text += String.Format("<param value=\"ourPdfGenerator.aspx?var0={0}&var1={1}&var2={2}\">", var0, var1, var2); ltrPDF.Text += "<param value=\"transparent\" name=\"wmode\"/>"; ltrPDF.Text += "</object>"; Kind of ugly, but it seems like it should work. But it doesn't. When I debug, and put a breakpoint on the first line of ourPdfGenerator.aspx.cs Page_Load method, I reach the breakpoint without any difficulty. However, the first thing we do is try to use Request.QueryString: string var0 = Request.QueryString["var0"]; which immediately throws an HttpException: "Request is not available in this context." I'm not clear on: Why isn't it available? What can I do about it?

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  • How strict should I be in the "do the simplest thing that could possible work" while doing TDD

    - by Support - multilanguage SO
    For TDD you have to Create a test that fail Do the simplest thing that could possible work to pass the test Add more variants of the test and repeat Refactor when a pattern emerge With this approach you're supposing to cover all the cases ( that comes to my mind at least) but I'm wonder if am I being too strict here and if it is possible to "think ahead" some scenarios instead of simple discover them. For instance, I'm processing a file and if it doesn't conform to a certain format I am to throw an InvalidFormatException So my first test was: @Test void testFormat(){ // empty doesn't do anything... processor.validate("empty.txt"); try { processor.validate("invalid.txt"); assert false: "Should have thrown InvalidFormatException"; } catch( InvalidFormatException ife ) { assert "Invalid format".equals( ife.getMessage() ); } } I run it and it fails because it doesn't throw an exception. So the next thing that comes to my mind is: "Do the simplest thing that could possible work", so I : public void validate( String fileName ) throws InvalidFormatException { if(fileName.equals("invalid.txt") { throw new InvalidFormatException("Invalid format"); } } Doh!! ( although the real code is a bit more complicated, I found my self doing something like this several times ) I know that I have to eventually add another file name and other test that would make this approach impractical and that would force me to refactor to something that makes sense ( which if I understood correctly is the point of TDD, to discover the patterns the usage unveils ) but: Q: am I taking too literal the "Do the simplest thing..." stuff?

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  • Comparing strings that contain formatting in C#

    - by Finglas
    I'm working on a function that given some settings - such as line spacing, the output (in string form) is modified. In order to test such scenarios, I'm using string literals, as shown below for the expected result. The method, using a string builder, (AppendLine) generates the said output. One issue I have run into is that of comparing such strings. In the example below, both are equal in terms of what they represent. The result is the area which I care about, however when comparing two strings, one literal, one not, equality naturally fails. This is because one of the strings emits line spacing, while the other only demonstrates the formatting it contains. What would be the best way of solving this equality problem? I do care about formatting such as new lines from the result of the method, this is crucially important. Code: string expected = @"Test\n\n\nEnd Test."; string result = "Test\n\n\nEnd Test"; Console.WriteLine(expected); Console.WriteLine(result); Output: Test\n\n\nEnd Test. Test End Test

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  • Why does the WCF 3.5 REST Starter Kit do this?

    - by Brandon
    I am setting up a REST endpoint that looks like the following: [WebInvoke(Method = "POST", UriTemplate = "?format=json", BodyStyle = WebMessageBodyStyle.WrappedRequest, ResponseFormat = WebMessageFormat.Json)] and [WebInvoke(Method = "DELETE", UriTemplate = "?token={token}&format=json", ResponseFormat = WebMessageFormat.Json)] The above throws the following error: UriTemplateTable does not support '?format=json' and '?token={token}&format=json' since they are not equivalent, but cannot be disambiguated because they have equivalent paths and the same common literal values for the query string. See the documentation for UriTemplateTable for more detail. I am not an expert at WCF, but I would imagine that it should map first by the HTTP Method and then by the URI Template. It appears to be backwards. If both of my URI templates are: ?token={token}&format=json This works because they are equivalent and it then appears to look at the HTTP Method where one is POST and the other is DELETE. Is REST supposed to work this way? Why are the URI Template Tables not being sorted first by HTTP Method and then by URI Template? This can cause some serious frustrations when 1 HTTP Method requires a parameter and another does not, or if I want to do optional parameters (e.g. if the 'format' parameter is not passed, default to XML).

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  • CoreMidi _MIDINetworkNotificationContactsDidChange symbol not found

    - by Domestic Cat
    I'm getting the following error after a crash in an iPad app that uses CoreMIDI (The * are to blank out the app name): Dyld Error Message: Symbol not found: _MIDINetworkNotificationContactsDidChange Referenced from: /var/mobile/Applications/8F08B78E-929D-4C5A-9F02-08FD5743C17F/***.app/*** Expected in: /System/Library/Frameworks/CoreMIDI.framework/CoreMIDI in /var/mobile/Applications/8F08B78E-929D-4C5A-9F02-08FD5743C17F/***.app/*** Dyld Version: 179.4 When the app launches, I listen for MIDI Network Sessions using [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(sessionDidChange:) name:MIDINetworkNotificationSessionDidChange object:nil]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(sessionDidChange:) name:MIDINetworkNotificationContactsDidChange object:nil]; Which seems to be what is causing the crash. This is after I call session = [MIDINetworkSession defaultSession]; session.enabled = YES; session.connectionPolicy = MIDINetworkConnectionPolicy_Anyone; MIDIClientCreate(CFSTR("MidiManager"), midiNotifyProc, (void*)self, &midiClientRef); This kind of looks like CoreMIDI library has not been included in the build. Problem is, it IS included in the build as a required framework. (And the deployment target is set to 4.2). I can run the build fine on my iPad and have been testing extensively with other users' iPads also with no problems whatsoever. Also, this is an update to an existing app that has had several updates already with no problems. I just double checked my deployment build and the framework is definitely included, and I just installed that build onto my iPad (with a different provisioning profile from the store) and it works fine also. What could be happening? Could it be that Xcode just did a bad build for the one I sent to Apple, or am I missing something obvious? Could I change the MIDINetworkNotificationSessionDidChange notification symbol to a literal string (@"MIDINetworkNotificationSessionDidChange") to fix things for the mean time? Thanks for any help!

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  • Regular expression test can't decide between true and false (JavaScript)

    - by nw
    I get this behavior in both Chrome (Developer Tools) and Firefox (Firebug). Note the regex test returns alternating true/false values: > var re = /.*?\bbl.*\bgr.*/gi; undefined > re /.*?\\bbl.*\\bgr.*/gi > re.test("Blue-Green"); true > re.test("Blue-Green"); false > re.test("Blue-Green"); true > re.test("Blue-Green"); false However, testing the same regex as a literal: > /.*?\bbl.*\bgr.*/gi.test("Blue-Green"); true > /.*?\bbl.*\bgr.*/gi.test("Blue-Green"); true > /.*?\bbl.*\bgr.*/gi.test("Blue-Green"); true > /.*?\bbl.*\bgr.*/gi.test("Blue-Green"); true I can't explain this and it's making debugging very difficult. Can anyone explain this behavior?

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  • Accessing appropriate array of double arrays in order of last created.

    - by Zach
    I have an array of double arrays, they are within a specified time window (8am-5pm), and are in order of last created over a period of several days. They are all timestamped and as such I have access to all C# DateTime methods. I then have a different iterative function that goes in the same order of the array of double arrays, however it isn't within a specified time window, it's 24/7. I want to access from this iterative function, the appropriate double array from the one within the window. Let's say that it's 4:30PM on DayOfYear 52, I'd like to access the last double array less than or equal to 4:30PM on DayOfYear 52. I'd expect the same double array if the time were 12:30AM on DayOfYear 53. However, if it were 9:00 AM of DayOfYear 53, well then I'd expect it to return something from the DayOfYear 53, less than or equal to 9:00AM. I think you get the idea. So I'm a having a bit of trouble grokking how to do this. Is anyone willing to offer a starting point or how they'd approach it? Edit: It is not a literal double[][], it is exactly as Anthony Pegram says: Dictionary<DateTime, double[]>

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  • Map Literals to Object Properties/Values

    - by vijay
    For eg, my input XML is look like this. <root> <myelemt> <input type="variable"> <variable>STARTDATE</variable> <variable>CUSTOMERNAME</variable> </input> </myelemt> </root> it is deserialized and loaded into the object MyXmlElemtObj in my code i have written like this, if(MyXmlElemtObj.input.variable.ToUpper() == "STARTDATE") ProcessObjectB(ObjectA.OrderDate); if(MyXmlElemtObj.input.variable.ToUpper() == "CUSTOMERNAME") ProcessObjectB(ObjectC.UserName); Here I am mapping those input literals to some objects value. The one thing that scares me is seeing some ** hard-coded literals** all over my code. Instead i would like to write something like ProcessObjectB(Common.GetMappedvalue(MyXmlElemtObj.input.variable)); Is there a way to isolate this mapping thing to common class, where i will predefine which literal is mapped to which values. The problem is the values are of objects created at the run time. If my question is making sense then So how do i achieve this? I think i have given all the necessary details. if anything is missing please metnion. Thx Much.

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  • C preprocessor problem in Microsoft Visual Studio 2010

    - by Remo.D
    I've encountered a problem with the new Visual C++ in VS 2010. I've got a header with the following defines: #define STC(y) #y #define STR(y) STC(\y) #define NUM(y) 0##y The intent is that you can have some constant around like #define TOKEN x5A and then you can have the token as a number or as a string: NUM(TOKEN) -> 0x5A STR(TOKEN) -> "\x5A" This is the expected behavior under the the substitution rules of macros arguments and so far it has worked well with gcc, open watcom, pellesC (lcc), Digital Mars C and Visual C++ in VS2008 Express. Today I recompiled the library with VS2010 Express only to discover that it doesn't work anymore! Using the new version I would get: NUM(TOKEN) -> 0x5A STR(TOKEN) -> "\y" It seems that the new preprocessor treats \y as an escape sequence even within a macro body which is a non-sense as escape sequences only have a meaning in literal strings. I suspect this is a gray area of the ANSI standard but even if the original behavior was mandated by the standard, MS VC++ is not exactly famous to be 100% ANSI C compliant so I guess I'll have to live with the new behavior of the MS compiler. Given that, does anybody have a suggestion on how to re-implement the original macros behavior with VS2010?

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  • HTML templating in C++ and translations

    - by Karim
    I'm using HTML_Template for templating in my C++-based web app (don't ask). I chose that because it was very simple and it turns out to be a good solution. The only problem right now is that I would like to be able to include translatable strings in the HTML templates (HTML_Template does not really support that). Ultimately, what I would like is to have a single file that contains all the strings to be translated. It can then be given to a translator and plugged back in to the app and used depending on which language the user chose in settings. I've been going back and forth on some options and was wondering what others felt was the best choice (or if there's a better choice that isn't listed) Extend HTML_Template to include a tag for holding the literal string to translate. So, for example, in the HTML I would put something like <TMPL_TRANS "this is the text to translate"/> Use a completely separate scheme for translation and preprocess the HTML files to generate the final template files (without the special translation lingo). For example, in the pre-processed file, translatable text would look like this: {{this is the text to translate}} and the final would look like: this is the text to translate Don't do anything and let the translators find the string to translate in the html and js files themselves.

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  • Runtime of optimized Primehunter

    - by Setton
    Ok so I need some serious runtime help here! This method should take in an int value, check its primality, and return true if the number is indeed a prime. I understand why the loop only needs to go up to i squared, I understand that the worst case scenario is the case in which either the number is prime (or a multiple of a prime). But I don't understand how to quantify the actual runtime. I have done the loop myself by hand to try to understand the pattern or correlation of the number (n) and how many loops occur, but I literally feel like I keep falling into the same trap every time. I need a new way of thinking about this! I have a hint: "Think about the SIZE of the integer" which makes me want to quantify the literal number of integers in a number in relation to how many iterations it does in the for loop (floor log(n)) +1). BUT IT'S NOT WORKIIIING?! I KNOW it isn't square root n, obviously. I'm asking for Big O notation. public class PrimeHunter { public static boolean isPrime(int n) { boolean answer = (n > 1) ? true : false; //runtime = linear runtime for (int i = 2; i * i <= n; i++) //runtime = ????? { if (n % i == 0) //doesn't occur if it is a prime { answer = false; break; } } return answer; //runtime = linear runtime } }

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  • The dislikes of TDD

    - by andrewstopford
    I enjoy debates about TDD and Brian Harrys blog post is no exception. Brian sounds out what he likes and dislikes about TDD and it's the dislikes I'll focus on. The idea of having unit tests that cover virtually every line of code that I’ve written that I have to refactor every time I refactor my code makes me shudder.  Doing this way makes me take nearly twice as long as it would otherwise take and I don’t feel like I get sufficient benefits from it. Refactoring your tests to match your refactored code sounds like the tests are suffering. Too many hard dependencies with no SOLID concerns are a sure fire reason you would do this. Maybe at the start of a TDD cycle you would need to do this as your design evolves and you remove these dependencies but this should quickly be resolved as you refactor. If you find your self still doing it then stop and look back at your design. Don’t get me wrong, I’m a big fan of unit tests.  I just prefer to write them after the code has stopped shaking a bit.  In fact most of my early testing is “manual”.  Either I write a small UI on top of my service that allows me to plug in values and try it or write some quick API tests that I throw away as soon as I have validated them. The problem with this is that a UI can make assumptions on your code that then just unit test around and very quickly the design becomes bad and you technical debt sweeps in. If you want to blackbox test your code with a UI then do so after your TDD cycles not before. This is probably by biggest issue with a literal TDD interpretation.  TDD says you never write a line of code without a failing test to show you need it.  I find it leads developers down a dangerous path.  Without any help from a methodology, I have met way too many developers in my life that “back into a solution”.  By this, I mean they write something, it mostly works and they discover a new requirement so they tack it on, and another and another and when they are done, they’ve got a monstrosity of special cases each designed to handle one specific scenario.  There’s way more code than there should be and it’s way too complicated to understand. I believe in finding general solutions to problems from which all the special cases naturally derive rather than building a solution of special cases.  In my mind, to do this, you have to start by conceptualizing and coding the framework of the general algorithm.  For me, that’s a relatively monolithic exercise. TDD is an development pratice not a methodology, the danger is that the solution becomes a mass of different things that violate DRY. TDD won't solve these problems, only good communication and practices like pairing will help. Above all else an assumption that TDD replaces a methodology is a mistake, combine it with what ever works for your team\business but only good communication will help. A good naming scheme\structure for folders, files and tests can help you and your team isolate what tests are for what.

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  • Has anyone achieved true differential sync with rsync in ESXi?

    - by Julius
    Berate me later on the fact that I'm using the service console to do anything in ESXi... I've got a working rsync binary (v3.0.4) that I can use in ESXi 4.1U1. I tend to use rsync over cp when copying VM's or backups from one local datastore to another local datastore. I've used rsync to copy data from one ESXi box to another but that was just for small files. In now trying to do true differential syncs of backups taken via ghettoVCB between my primary ESXi machine and a secondary one. But even when I do this locally (one datastore to another datastore on the same ESXi machine) rsync appears to copy the files in their entirety. I've got two VMDK's totally 80GB in size, and rsync still takes anywhere between 1 and 2 hours but the VMDK's aren't growing that much daily. Below is the rsync command I'm executing. I am copying locally because ultimately these files will get copied onto a datastore created from a LUN on a remote system. Its not an rsync that'll be serviced by an rsync daemon on a remote system. rsync -avPSI VMBACKUP_2011-06-10_02-27-56/* VMBACKUP_2011-06-01_06-37-11/ --stats --itemize-changes --existing --modify-window=2 --no-whole-file sending incremental file list >f..t...... VM-flat.vmdk 42949672960 100% 15.06MB/s 0:45:20 (xfer#1, to-check=5/6) >f..t...... VM.vmdk 556 100% 4.24kB/s 0:00:00 (xfer#2, to-check=4/6) >f..t...... VM.vmx 3327 100% 25.19kB/s 0:00:00 (xfer#3, to-check=3/6) >f..t...... VM_1-flat.vmdk 42949672960 100% 12.19MB/s 0:56:01 (xfer#4, to-check=2/6) >f..t...... VM_1.vmdk 558 100% 2.51kB/s 0:00:00 (xfer#5, to-check=1/6) >f..t...... STATUS.ok 30 100% 0.02kB/s 0:00:01 (xfer#6, to-check=0/6) Number of files: 6 Number of files transferred: 6 Total file size: 85899350391 bytes Total transferred file size: 85899350391 bytes Literal data: 2429682778 bytes Matched data: 83469667613 bytes File list size: 129 File list generation time: 0.001 seconds File list transfer time: 0.000 seconds Total bytes sent: 2432530094 Total bytes received: 5243054 sent 2432530094 bytes received 5243054 bytes 295648.92 bytes/sec total size is 85899350391 speedup is 35.24 Is this because ESXi is itself making so many changes to the VMDK's that as far as rsync is concerned the entire file has to be retransmitted? Has anyone actually achieved actual diff sync with ESXi?

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  • Date and Time Support in SQL Server 2008

    - by Aamir Hasan
      Using the New Date and Time Data Types Normal 0 false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} 1.       The new date and time data types in SQL Server 2008 offer increased range and precision and are ANSI SQL compatible. 2.       Separate date and time data types minimize storage space requirements for applications that need only date or time information. Moreover, the variable precision of the new time data type increases storage savings in exchange for reduced accuracy. 3.       The new data types are mostly compatible with the original date and time data types and use the same Transact-SQL functions. 4.       The datetimeoffset data type allows you to handle date and time information in global applications that use data that originates from different time zones. SELECT c.name, p.* FROM politics pJOIN country cON p.country = c.codeWHERE YEAR(Independence) < 1753ORDER BY IndependenceGO8.    Highlight the SELECT statement and click Execute ( ) to show the use of some of the date functions.T-SQLSELECT c.name AS [Country Name],        CONVERT(VARCHAR(12), p.Independence, 107) AS [Independence Date],       DATEDIFF(YEAR, p.Independence, GETDATE()) AS [Years Independent (appox)],       p.GovernmentFROM politics pJOIN country cON p.country = c.codeWHERE YEAR(Independence) < 1753ORDER BY IndependenceGO10.    Select the SET DATEFORMAT statement and click Execute ( ) to change the DATEFORMAT to day-month-year.T-SQLSET DATEFORMAT dmyGO11.    Select the DECLARE and SELECT statements and click Execute ( ) to show how the datetime and datetime2 data types interpret a date literal.T-SQLSET DATEFORMAT dmyDECLARE @dt datetime = '2008-12-05'DECLARE @dt2 datetime2 = '2008-12-05'SELECT MONTH(@dt) AS [Month-Datetime], DAY(@dt)     AS [Day-Datetime]SELECT MONTH(@dt2) AS [Month-Datetime2], DAY(@dt2)     AS [Day-Datetime2]GO12.    Highlight the DECLARE and SELECT statements and click Execute ( ) to use integer arithmetic on a datetime variable.T-SQLDECLARE @dt datetime = '2008-12-05'SELECT @dt + 1GO13.    Highlight the DECLARE and SELECT statements and click Execute ( ) to show how integer arithmetic is not allowed for datetime2 variables.T-SQLDECLARE @dt2 datetime = '2008-12-05'SELECT @dt2 + 1GO14.    Highlight the DECLARE and SELECT statements and click Execute ( ) to show how to use DATE functions to do simple arithmetic on datetime2 variables.T-SQLDECLARE @dt2 datetime2(7) = '2008-12-05'SELECT DATEADD(d, 1, @dt2)GO15.    Highlight the DECLARE and SELECT statements and click Execute ( ) to show how the GETDATE function can be used with both datetime and datetime2 data types.T-SQLDECLARE @dt datetime = GETDATE();DECLARE @dt2 datetime2(7) = GETDATE();SELECT @dt AS [GetDate-DateTime], @dt2 AS [GetDate-DateTime2]GO16.    Draw attention to the values returned for both columns and how they are equal.17.    Highlight the DECLARE and SELECT statements and click Execute ( ) to show how the SYSDATETIME function can be used with both datetime and datetime2 data types.T-SQLDECLARE @dt datetime = SYSDATETIME();DECLARE @dt2 datetime2(7) = SYSDATETIME();SELECT @dt AS [Sysdatetime-DateTime], @dt2     AS [Sysdatetime-DateTime2]GO18.    Draw attention to the values returned for both columns and how they are different.Programming Global Applications with DateTimeOffset 2.    If you have not previously created the SQLTrainingKitDB database while completing another demo in this training kit, highlight the CREATE DATABASE statement and click Execute ( ) to do so now.T-SQLCREATE DATABASE SQLTrainingKitDBGO3.    Select the USE and CREATE TABLE statements and click Execute ( ) to create table datetest in the SQLTrainingKitDB database.T-SQLUSE SQLTrainingKitDBGOCREATE TABLE datetest (  id integer IDENTITY PRIMARY KEY,  datetimecol datetimeoffset,  EnteredTZ varchar(40)); Reference:http://www.microsoft.com/downloads/details.aspx?FamilyID=E9C68E1B-1E0E-4299-B498-6AB3CA72A6D7&displaylang=en   

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  • Alternative way of developing for ASP.NET to WebForms - Any problems with this?

    - by John
    So I have been developing in ASP.NET WebForms for some time now but often get annoyed with all the overhead (like ViewState and all the JavaScript it generates), and the way WebForms takes over a lot of the HTML generation. Sometimes I just want full control over the markup and produce efficient HTML of my own so I have been experimenting with what I like to call HtmlForms. Essentially this is using ASP.NET WebForms but without the form runat="server" tag. Without this tag, ASP.NET does not seem to add anything to the page at all. From some basic tests it seems that it runs well and you still have the ability to use code-behind pages, and many ASP.NET controls such as repeaters. Of course without the form runat="server" many controls won't work. A post at Enterprise Software Development lists the controls that do require the tag. From that list you will see that all of the form elements like TextBoxes, DropDownLists, RadioButtons, etc cannot be used. Instead you use normal HTML form controls. But how do you access these HTML controls from the code behind? Retrieving values on post back is easy, you just use Request.QueryString or Request.Form. But passing data to the control could be a little messy. Do you use a ASP.NET Literal control in the value field or do you use <%= value % in the markup page? I found it best to add runat="server" to my HTML controls and then you can access the control in your code-behind like this: ((HtmlInputText)txtName).Value = "blah"; Here's a example that shows what you can do with a textbox and drop down list: Default.aspx <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="NoForm.Default" %> <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="NoForm.Default" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title></title> </head> <body> <form action="" method="post"> <label for="txtName">Name:</label> <input id="txtName" name="txtName" runat="server" /><br /> <label for="ddlState">State:</label> <select id="ddlState" name="ddlState" runat="server"> <option value=""></option> </select><br /> <input type="submit" value="Submit" /> </form> </body> </html> Default.aspx.cs using System; using System.Web.UI.HtmlControls; using System.Web.UI.WebControls; namespace NoForm { public partial class Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { //Default values string name = string.Empty; string state = string.Empty; if (Request.RequestType == "POST") { //If form submitted (post back) name = Request.Form["txtName"]; state = Request.Form["ddlState"]; //Server side form validation would go here //and actions to process form and redirect } ((HtmlInputText)txtName).Value = name; ((HtmlSelect)ddlState).Items.Add(new ListItem("ACT")); ((HtmlSelect)ddlState).Items.Add(new ListItem("NSW")); ((HtmlSelect)ddlState).Items.Add(new ListItem("NT")); ((HtmlSelect)ddlState).Items.Add(new ListItem("QLD")); ((HtmlSelect)ddlState).Items.Add(new ListItem("SA")); ((HtmlSelect)ddlState).Items.Add(new ListItem("TAS")); ((HtmlSelect)ddlState).Items.Add(new ListItem("VIC")); ((HtmlSelect)ddlState).Items.Add(new ListItem("WA")); if (((HtmlSelect)ddlState).Items.FindByValue(state) != null) ((HtmlSelect)ddlState).Value = state; } } } As you can see, you have similar functionality to ASP.NET server controls but more control over the final markup, and less overhead like ViewState and all the JavaScript ASP.NET adds. Interestingly you can also use HttpPostedFile to handle file uploads using your own input type="file" control (and necessary form enctype="multipart/form-data"). So my question is can you see any problems with this method, and any thoughts on it's usefulness? I have further details and tests on my blog.

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  • Rules for Naming

    - by PointsToShare
    © 2011 By: Dov Trietsch. All rights reserved Naming Documents (or is it “Document, Naming”?) Tis but thy name that is my enemy; Thou art thyself, though not a Montague. What's Montague? It is nor hand, nor foot, Nor arm, nor face, nor any other part Belonging to a man. O, be some other name! What's in a name? That which we call a rose By any other name would smell as sweet; So Romeo would, were he not Romeo call'd, Retain that dear perfection which he owes Without that title. Romeo, doff thy name And for that name which is no part of thee Take all myself.  Shakespeare – Romeo and Juliet Act II, Scene 2 We normally only use the bold portion of the famous Shakespearean quote above, but it is really out of context. As the play unfolds, we learn that a name is all too powerful. Indeed it is because of their names that the doomed lovers die. There might be life and death in a name (BTW, when I wrote this monogram, I was in Hatfield, PA. Remember the Hatfields and the McCoys?) This is a bit extreme, but in the field of Knowledge Management (KM) names are of the utmost importance as well. When I write an article about managing SharePoint sites, how should I name it? “Managing a site” or “Site, managing”? Nine times out of ten I’d opt for the latter. Almost everything we do is “Managing” so to make life easier for a person looking for meaningful content, we title our articles starting with the differentiator rather than the common factor. As a rule of thumb, we start the name with the noun rather than the verb. It is not what we do that is the primary key; it is what we do it to. So, answer this – is it a “rule of thumb” or a “thumb rule?” This is tough. A lot of what we do when naming is a judgment call. Both thumb and rule are nouns, albeit concrete and abstract (more about this later), but to most people “thumb rule” is meaningless while “rule of thumb” is an idiom. The difference between knowledge and information is that knowledge is meaningful information placed in context. Thus I elect the “rule of thumb”. It is the more meaningful title. Abstract and Concrete are relative terms. Many nouns (and verbs) that are abstract to a commoner, are concrete to a practitioner of one profession or another and may even have different concrete meanings in different professional jargons. Think about “running”. To an executive it means running a business, to a marathoner its meaning is much more literal. Generally speaking, we store and disseminate knowledge within a practice more than we do it in general. Even dictionaries encyclopedias define terms as they apply to different audiences. The rule of thumb is to put the more concrete first, but within the audience’s jargon. Even the title of this monogram is a question. Do I name it “Naming Documents” or “Documents, Naming”? Well, my own rule of thumb (“Here he goes again!?”) states that the latter is better because it starts with a noun, but this is a document about naming more than it about documents. The rules of naming also apply to graphs and charts, excel spreadsheets, and so on. Thus, I vote for the former.  A better title could have been “Naming Objects” only the word “Object” is a bit too abstract. How about just “Naming” or “Naming, rules of”? You get the drift. One of the ways to resolve all of this is to store the documents in Knowledge-Bases, which may become the subjects of a future punditry. Knowledge bases use keywords to describe their content.  Use a Metadata store for the keywords to at least attempt some common grounds. Here is another general rule (rule of thumb?!!) – put at least the one keyword in the title. Use subtitles. Here is an example: Migrating documents – Screening, cleaning, and organizing our knowledge. The main keyword is “documents”, next is “migrating”, other keywords also appear in the subtitle. They are “screening”, “cleaning”, and “organizing”. Any questions? Send me an amply named document by email: [email protected]

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  • "The specified type was not recognized" exception when trying to invoke a webservice call

    - by fretje
    I'm trying to call a third party webservice using WSE 3.0 as a client in Visual Studio 2005. The call works fine and I can see that I get a good response (I have tracing enabled), but apparently the xml parser chokes over it. I always get an InvalidOperationException: There is en error in the XML document. with an InnerException: The specified type was not recognized: name='Map', namespace='http://xml.apache.org/xml-soap', at <bevoegdheid xmlns=''>. This is the relevant part of the response: <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ns1="http://xml.apache.org/xml-soap" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" xmlns:ns2="https://acceptatie.cartalk.nl/Soap/Apk" SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"> <SOAP-ENV:Body> <SOAP-ENV:opvragenKeurmeesterGegevensResponse> <opvragenKeurmeesterGegevensReturn xsi:type="ns2:Backend_Apk_Result_OpvragenKeurmeesterGegevens"> <naam xsi:type="xsd:string">A name</naam> ... <bevoegdheid SOAP-ENC:arrayType="ns1:Map[2]" xsi:type="SOAP-ENC:Array"> <item xsi:type="ns1:Map"> <item> <key xsi:type="xsd:string">soortBevoegdheid</key> <value xsi:type="xsd:string">AL</value> </item> ... </item> <item> ... </item> </bevoegdheid> <meldingSoort xsi:nil="true" /> <meldingNummer xsi:nil="true" /> <melding xsi:nil="true" /> </opvragenKeurmeesterGegevensReturn> </SOAP-ENV:opvragenKeurmeesterGegevensResponse> </SOAP-ENV:Body> </SOAP-ENV:Envelope> And this is how that "bevoegdheid" is defined in the wsdl: <xsd:element name="bevoegdheid" type="soap-enc:Array" /> There is no mention of a "Map" type anywhere in the wsdl. I have been googling around for this, but the only kind of answer I've found is something along the lines of The service uses rpc/encoded format which is harder to get interoperability with. If you can change the server to document/literal it is better. But as this is a third party service (which is already used by other clients), this is no option for us. Any other suggestions? How can I get the xml parser to recognize that "Map" type?

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  • Remove namespace declarations from web service response

    - by Fernando
    I have a web service that returns a simple object: [System.CodeDom.Compiler.GeneratedCodeAttribute("System.Xml", "2.0.50727.4927")] [System.SerializableAttribute()] [System.Diagnostics.DebuggerStepThroughAttribute()] [System.ComponentModel.DesignerCategoryAttribute("code")] [System.Xml.Serialization.SoapTypeAttribute(Namespace="urn:CHAMADO")] public partial class STRUCCHAMADOOUT : object, System.ComponentModel.INotifyPropertyChanged { private string cODField; private string mSGField; /// <remarks/> public string COD { get { return this.cODField; } set { this.cODField = value; this.RaisePropertyChanged("COD"); } } /// <remarks/> public string MSG { get { return this.mSGField; } set { this.mSGField = value; this.RaisePropertyChanged("MSG"); } } public event System.ComponentModel.PropertyChangedEventHandler PropertyChanged; protected void RaisePropertyChanged(string propertyName) { System.ComponentModel.PropertyChangedEventHandler propertyChanged = this.PropertyChanged; if ((propertyChanged != null)) { propertyChanged(this, new System.ComponentModel.PropertyChangedEventArgs(propertyName)); } } } this class was generated by wsdl.exe, based on a wsdl file provided by the client. This is the web method: [WebMethod(MessageName="CHAMADORequest")] [SoapRpcMethod( Action = "urn:CHAMADO#CHAMADO", RequestNamespace = "urn:CHAMADO", RequestElementName = "CHAMADO", ResponseNamespace = "", ResponseElementName = "return", Use = SoapBindingUse.Literal )] [return: XmlElement("return")] public STRUCCHAMADOOUT CHAMADO(STRUCCHAMADOIN ENTRADA) { STRUCCHAMADOOUT result = new STRUCCHAMADOOUT(); try { string str = Util.GetRequestXML(); persist(getResult<Entidades.Chamado>(str, "ENTRADA", string.Empty)); result.COD = "1"; result.MSG = "Operação realizada com sucesso"; } catch (Exception ex) { result.COD = "0"; result.MSG = ex.Message + Environment.NewLine + ex.StackTrace; } return result; } The client is saying that his system is raising an error because the service response has namespaces declaration, just like this: <?xml version="1.0" encoding="UTF-8" standalone="yes" ?> <CHAMADOResponse xmlns="urn:CHAMADO" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"> <return xmlns=""> <COD xmlns="urn:CHAMADO">1</COD> <MSG xmlns="urn:CHAMADO">Operação realizada com sucesso</MSG> </return> </CHAMADOResponse> Now, I managed to remove the namespaces from COD and MSG by applying the attriute WebServiceBinding(ConformsTo = WsiProfiles.None) to the service's class and setting ResponseNamespace to an empty string. But CHAMADOResponse still have the namespaces declaration. I'm pretty sure that it should not be done like that. In fact, I don't believe that the namespaces are the problem at all. This project has been hard since the begining, as we had to create services that matched legacy wsdl. My question is: is there a way that I could remove all that namespaces declaration from the web service response?

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  • Can/should one disable namespace validation in Axis2 clients using ADB databinding?

    - by RJCantrell
    I have an document/literal Axis 1 service which I'm consuming with an Axis 2 client (ADB databinding, generated from WSDL2Java). It receives a valid XML response, but in parsing that XML, I get the error "Unexpected Subelement" for any type which doesn't have a namespace defined in the response. I can resolve the error by manually changing the (auto-generated by Axis2) type-validation line to only check the type name and not the namespace as well, but is there a non-manual way to skip this? This service is consumed properly by other Axis 1 clients. Here's the response, with bits in ALL CAPS having been anonymized. Some types have namespaces, some have empty-string namespaces, and some have none at all. Can I control this via the service's WSDL, or in Axis2's WSDL2Java handling of the WSDL? Is there a fundamental mismatch between Axis 1 and Axis2? The response below looks correct, except perhaps for where that type (anonymized as TWO below) is nested within itself. <?xml version="1.0" encoding="UTF-8"?> <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> <soapenv:Body> <SERVICENAMEResponse xmlns="http://service.PROJECT.COMPANY.com"> <SERVICENAMEReturn xmlns=""> <ONE></ONE> <TWO><TWO> <THREE>2</THREE> <FOUR>-10</FOUR> <FIVE>6</FIVE> <SIX>1</SIX> </TWO></TWO> <fileName></fileName> </SERVICENAMEReturn></SERVICENAMEResponse> </soapenv:Body></soapenv:Envelope> I did not have to modify the validation of the "SERVICENAMEResponse" object because it has the correct namespace specified, but I have to so for all its subelements. The manual modification that I can make (one per type) to fix this is to change: if (reader.isStartElement() && new javax.xml.namespace.QName("http://dto.PROJECT.COMPANY.com","ONE").equals(reader.getName())){ to: if (reader.isStartElement() && new javax.xml.namespace.QName("ONE").equals(reader.getName())){

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  • ContentType Issue -- Human is an idiot - Can't figure out how to tie the original model to a Content

    - by bmelton
    Originally started here: http://stackoverflow.com/questions/2650181/django-in-query-as-a-string-result-invalid-literal-for-int-with-base-10 I have a number of apps within my site, currently working with a simple "Blog" app. I have developed a 'Favorite' app, easily enough, that leverages the ContentType framework in Django to allow me to have a 'favorite' of any type... trying to go the other way, however, I don't know what I'm doing, and can't find any examples for. I'll start off with the favorite model: favorite/models.py from django.db import models from django.contrib.contenttypes.models import ContentType from django.contrib.contenttypes import generic from django.contrib.auth.models import User class Favorite(models.Model): content_type = models.ForeignKey(ContentType) object_id = models.PositiveIntegerField() user = models.ForeignKey(User) content_object = generic.GenericForeignKey() class Admin: list_display = ('key', 'id', 'user') class Meta: unique_together = ("content_type", "object_id", "user") Now, that allows me to loop through the favorites (on a user's "favorites" page, for example) and get the associated blog objects via {{ favorite.content_object.title }}. What I want now, and can't figure out, is what I need to do to the blog model to allow me to have some tether to the favorite (so when it is displayed in a list it can be highlighted, for example). Here is the blog model: blog/models.py from django.db import models from django.db.models import permalink from django.template.defaultfilters import slugify from category.models import Category from section.models import Section from favorite.models import Favorite from django.contrib.auth.models import User from django.contrib.contenttypes.models import ContentType from django.contrib.contenttypes import generic class Blog(models.Model): title = models.CharField(max_length=200, unique=True) slug = models.SlugField(max_length=140, editable=False) author = models.ForeignKey(User) homepage = models.URLField() feed = models.URLField() description = models.TextField() page_views = models.IntegerField(null=True, blank=True, default=0 ) created_on = models.DateTimeField(auto_now_add = True) updated_on = models.DateTimeField(auto_now = True) def __unicode__(self): return self.title @models.permalink def get_absolute_url(self): return ('blog.views.show', [str(self.slug)]) def save(self, *args, **kwargs): if not self.slug: slug = slugify(self.title) duplicate_count = Blog.objects.filter(slug__startswith = slug).count() if duplicate_count: slug = slug + str(duplicate_count) self.slug = slug super(Blog, self).save(*args, **kwargs) class Entry(models.Model): blog = models.ForeignKey('Blog') title = models.CharField(max_length=200) slug = models.SlugField(max_length=140, editable=False) description = models.TextField() url = models.URLField(unique=True) image = models.URLField(blank=True, null=True) created_on = models.DateTimeField(auto_now_add = True) def __unicode__(self): return self.title def save(self, *args, **kwargs): if not self.slug: slug = slugify(self.title) duplicate_count = Entry.objects.filter(slug__startswith = slug).count() if duplicate_count: slug = slug + str(duplicate_count) self.slug = slug super(Entry, self).save(*args, **kwargs) class Meta: verbose_name = "Entry" verbose_name_plural = "Entries" Any guidance?

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  • Do you still limit line length in code?

    - by Noldorin
    This is a matter on which I would like to gauge the opinion of the community: Do you still limit the length of lines of code to a fixed maximum? This was certainly a convention of the past for many languages; one would typically cap the number of characters per line to a value such as 80 (and more recnetly 100 or 120 I believe). As far as I understand, the primary reasons for limiting line length are: Readability - You don't have to scroll over horizontally when you want to see the end of some lines. Printing - Admittedly (at least in my experience), most code that you are working on does not get printed out on paper, but by limiting the number of characters you can insure that formatting doesn't get messed up when printed. Past editors (?) - Not sure about this one, but I suspect that at some point in the distant past of programming, (at least some) text editors may have been based on a fixed-width buffer. I'm sure there are points that I am still missing out, so feel free to add to these... Now, when I tend to observe C or C# code nowadays, I often see a number of different styles, the main ones being: Line length capped to 80, 100, or even 120 characters. As far as I understand, 80 is the traditional length, but the longer ones of 100 and 120 have appeared because of the widespread use of high resolutions and widescreen monitors nowadays. No line length capping at all. This tends to be pretty horrible to read, and I don't see it too often, though it's certainly not too rare either. Inconsistent capping of line length. The length of some lines are limited to a fixed maximum (or even a maximum that changes depending on the file/location in code), while others (possibly comments) are not at all. My personal preference here (at least recently) has been to cap the line length to 100 in the Visual Studio editor. This means that in a decently sized window (on a non-widescreen monitor), the ends of lines are still fully visible. I can however see a few disadvantages in this, especially when you end up writing code that's indented 3 or 4 levels and then having to include a long string literal - though I often take this as a sign to refactor my code! In particular, I am curious what the C and C# coders (or anyone who uses Visual Studio for that matter) think about this point, though I would be interested in hearing anyone's thoughts on the subject. Edit Thanks for the all answers - I appreciate the variety of opinions here, all presenting sound reasons. Consensus does seem to be tipping in the direction of always (or almost always) limit the line length. Interestingly, it seems to be in various coding standards to limit the line length. Judging by some of the answers, both the Python and Google CPP guidelines set the limit at 80 chars. I haven't seen anything similar regarding C# or VB.NET, but I would be curious to see if there are ones anywhere.

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  • Asp.NET custom templated datalist throws argument out of range (index) on button press

    - by MrTortoise
    I have a class BaseTemplate public abstract class BaseTemplate : ITemplate This adds the controls, and provides abstract methods to implement in the inheriting class. The inheriting class then adds its html according to its data source and manages the data binding. This all works fine - I get the control appearing with properly parsed html. The problem is that the base class adds controls into the template that have their own CommandName arguments; the idea is that the class that implements the custom templated dataList will provide the logic of setting the Selected and Edit Indexes. This class also manages the data binding, etc. It sets all of the templates on the datalist in the Init method (which was another cause of this exception). The exception gets thrown when I hit one of these buttons - I have tried hooking up both their click and command events everywhere in case this was the problem. I have also ensured that their command names do not match any of the system ones. The stack trace does not include any references to my methods or objects which is why I am so stuck. It is the most unhelpful message I can imagine. The really frustrating thing is that I cannot get a breakpoint to fire - i.e. the problem is happening after I click the button, but before and of my code can execute. The last time this exception happened was when I had this code in a user control and was assigning the templates to the datalist in the PageLoad. I moved these into init to fix that problem; however, this is a problem that was there then and I have no idea what is causing it let alone how to solve it (and index out of range doesn't really help without knowing what index.) The Exception Details Exception Details: System.ArgumentOutOfRangeException: Specified argument was out of the range of valid values. Parameter name: index The Stack Trace: [ArgumentOutOfRangeException: Specified argument was out of the range of valid values. Parameter name: index] System.Web.UI.ControlCollection.get_Item(Int32 index) +8665582 System.Web.UI.WebControls.DataList.GetItem(ListItemType itemType, Int32 repeatIndex) +8667655 System.Web.UI.WebControls.DataList.System.Web.UI.WebControls.IRepeatInfoUser.GetItemStyle(ListItemType itemType, Int32 repeatIndex) +11 System.Web.UI.WebControls.RepeatInfo.RenderVerticalRepeater(HtmlTextWriter writer, IRepeatInfoUser user, Style controlStyle, WebControl baseControl) +8640873 System.Web.UI.WebControls.RepeatInfo.RenderRepeater(HtmlTextWriter writer, IRepeatInfoUser user, Style controlStyle, WebControl baseControl) +27 System.Web.UI.WebControls.DataList.RenderContents(HtmlTextWriter writer) +208 System.Web.UI.WebControls.BaseDataList.Render(HtmlTextWriter writer) +30 System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27 System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +99 System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25 System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +134 System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +19 System.Web.UI.HtmlControls.HtmlForm.RenderChildren(HtmlTextWriter writer) +163 System.Web.UI.HtmlControls.HtmlContainerControl.Render(HtmlTextWriter writer) +32 System.Web.UI.HtmlControls.HtmlForm.Render(HtmlTextWriter output) +51 System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27 System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +99 System.Web.UI.HtmlControls.HtmlForm.RenderControl(HtmlTextWriter writer) +40 System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +134 System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +19 System.Web.UI.Page.Render(HtmlTextWriter writer) +29 System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27 System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +99 System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1266 The code Base class: public abstract class BaseTemplate : ITemplate { ListItemType _templateType; public BaseTemplate(ListItemType theTemplateType) { _templateType = theTemplateType; } public ListItemType ListItemType { get { return _templateType; } } #region ITemplate Members public void InstantiateIn(Control container) { PlaceHolder ph = new PlaceHolder(); container.Controls.Add(ph); Literal l = new Literal(); switch (_templateType) { case ListItemType.Header: { ph.Controls.Add(new LiteralControl(@"<table><tr>")); InstantiateInHeader(ph); ph.Controls.Add(new LiteralControl(@"</tr>")); break; } case ListItemType.Footer: { ph.Controls.Add(new LiteralControl(@"<tr>")); InstantiateInFooter(ph); ph.Controls.Add(new LiteralControl(@"</tr></table>")); break; } case ListItemType.Item: { ph.Controls.Add(new LiteralControl(@"<tr>")); InstantiateInItem(ph); ph.Controls.Add(new LiteralControl(@"<td>")); Button select = new Button(); select.ID = "btnSelect"; select.CommandName = "SelectRow"; select.Text = "Select"; ph.Controls.Add(select); ph.Controls.Add(new LiteralControl(@"</td>")); ph.Controls.Add(new LiteralControl(@"</tr>")); ph.DataBinding += new EventHandler(ph_DataBinding); break; } case ListItemType.AlternatingItem: { ph.Controls.Add(new LiteralControl(@"<tr>")); InstantiateInAlternatingItem(ph); ph.Controls.Add(new LiteralControl(@"<td>")); Button select = new Button(); select.ID = "btnSelect"; select.CommandName = "SelectRow"; select.Text = "Select"; ph.Controls.Add(select); ph.Controls.Add(new LiteralControl(@"</td>")); ph.Controls.Add(new LiteralControl(@"</tr>")); ph.DataBinding+=new EventHandler(ph_DataBinding); break; } case ListItemType.SelectedItem: { ph.Controls.Add(new LiteralControl(@"<tr>")); InstantiateInItem(ph); ph.Controls.Add(new LiteralControl(@"<td>")); Button edit = new Button(); edit.ID = "btnEdit"; edit.CommandName = "EditRow"; edit.Text = "Edit"; ph.Controls.Add(edit); Button delete = new Button(); delete.ID = "btnDelete"; delete.CommandName = "DeleteRow"; delete.Text = "Delete"; ph.Controls.Add(delete); ph.Controls.Add(new LiteralControl(@"</td>")); ph.Controls.Add(new LiteralControl(@"</tr>")); ph.DataBinding += new EventHandler(ph_DataBinding); break; } case ListItemType.EditItem: { ph.Controls.Add(new LiteralControl(@"<tr>")); InstantiateInEdit(ph); ph.Controls.Add(new LiteralControl(@"<td>")); Button save = new Button(); save.ID = "btnSave"; save.CommandName = "SaveRow"; save.Text = "Save"; ph.Controls.Add(save); Button cancel = new Button(); cancel.ID = "btnCancel"; cancel.CommandName = "CancelRow"; cancel.Text = "Cancel"; ph.Controls.Add(cancel); ph.Controls.Add(new LiteralControl(@"</td>")); ph.Controls.Add(new LiteralControl(@"</tr>")); ph.DataBinding += new EventHandler(ph_DataBinding); break; } case ListItemType.Separator: { InstantiateInSeperator(ph); break; } } } void ph_DataBinding(object sender, EventArgs e) { DataBindingOverride(sender, e); } /// <summary> /// the controls placed into the PlaceHolder will get wrapped in &lt;table&gt;&lt;tr&gt; &lt;/tr&gt;. I.e. you need to provide the column names wrapped in &lt;td&gt;&lt;/td&gt; tags. /// </summary> /// <param name="header"></param> public abstract void InstantiateInHeader(PlaceHolder ph); /// <summary> /// the controls will have a column added after them and so require each column to be properly wrapped in &lt;td&gt;&lt;/td&gt; tags. The &lt;tr&gt;&lt;/tr&gt; is handled in the base class. /// </summary> /// <param name="ph"></param> public abstract void InstantiateInItem(PlaceHolder ph); /// <summary> /// the controls will have a column added after them and so require each column to be properly wrapped in &lt;td&gt;&lt;/td&gt; tags. The &lt;tr&gt;&lt;/tr&gt; is handled in the base class. /// </summary> /// <param name="ph"></param> public abstract void InstantiateInAlternatingItem(PlaceHolder ph); /// <summary> /// the controls will have a column added after them and so require each column to be properly wrapped in &lt;td&gt;&lt;/td&gt; tags. The &lt;tr&gt;&lt;/tr&gt; is handled in the base class. /// </summary> /// <param name="ph"></param> public abstract void InstantiateInEdit(PlaceHolder ph); /// <summary> /// Any html used in the footer will have &lt;/tr&gt;&lt;table&gt; appended to the end. /// &lt;tr&gt; will be appended to the front. /// </summary> /// <param name="ph"></param> public abstract void InstantiateInFooter(PlaceHolder ph); /// <summary> /// the controls will have a column added after them and so require each column to be properly wrapped in &lt;td&gt;&lt;/td&gt; tags. The &lt;tr&gt;&lt;/tr&gt; is handled in the base class. /// Adds Delete and Edit Buttons after the table contents. /// </summary> /// <param name="ph"></param> public abstract void InstantiateInSelectedItem(PlaceHolder ph); /// <summary> /// The base class provides no &lt;tr&gt;&lt;/tr&gt; tags /// </summary> /// <param name="ph"></param> public abstract void InstantiateInSeperator(PlaceHolder ph); /// <summary> /// Use this method to bind the controls to their data. /// </summary> /// <param name="sender"></param> /// <param name="e"></param> public abstract void DataBindingOverride(object sender, EventArgs e); #endregion } Inheriting class: public class NominalGroupTemplate : BaseTemplate { public NominalGroupTemplate(ListItemType theListItemType) : base(theListItemType) { } public override void InstantiateInHeader(PlaceHolder ph) { ph.Controls.Add(new LiteralControl(@"<td>ID</td><td>Group</td><td>IsPositive</td>")); } public override void InstantiateInItem(PlaceHolder ph) { ph.Controls.Add(new LiteralControl(@"<td>")); Label lblID = new Label(); lblID.ID = "lblID"; ph.Controls.Add(lblID); ph.Controls.Add(new LiteralControl(@"</td><td>")); Label lblGroup = new Label(); lblGroup.ID = "lblGroup"; ph.Controls.Add(lblGroup); ph.Controls.Add(new LiteralControl(@"</td><td>")); CheckBox chkIsPositive = new CheckBox(); chkIsPositive.ID = "chkIsPositive"; chkIsPositive.Enabled = false; ph.Controls.Add(chkIsPositive); ph.Controls.Add(new LiteralControl(@"</td>")); } public override void InstantiateInAlternatingItem(PlaceHolder ph) { InstantiateInItem(ph); } public override void InstantiateInEdit(PlaceHolder ph) { ph.Controls.Add(new LiteralControl(@"<td>")); Label lblID = new Label(); lblID.ID = "lblID"; ph.Controls.Add(lblID); ph.Controls.Add(new LiteralControl(@"</td><td>")); TextBox txtGroup = new TextBox(); txtGroup.ID = "txtGroup"; txtGroup.Visible = true; txtGroup.Enabled = true ; ph.Controls.Add(txtGroup); ph.Controls.Add(new LiteralControl(@"</td><td>")); CheckBox chkIsPositive = new CheckBox(); chkIsPositive.ID = "chkIsPositive"; chkIsPositive.Visible = true; chkIsPositive.Enabled = true ; ph.Controls.Add(chkIsPositive); ph.Controls.Add(new LiteralControl(@"</td>")); } public override void InstantiateInFooter(PlaceHolder ph) { InstantiateInHeader(ph); } public override void InstantiateInSelectedItem(PlaceHolder ph) { ph.Controls.Add(new LiteralControl(@"<td>")); Label lblID = new Label(); lblID.ID = "lblID"; ph.Controls.Add(lblID); ph.Controls.Add(new LiteralControl(@"</td><td>")); TextBox txtGroup = new TextBox(); txtGroup.ID = "txtGroup"; txtGroup.Visible = true; txtGroup.Enabled = false; ph.Controls.Add(txtGroup); ph.Controls.Add(new LiteralControl(@"</td><td>")); CheckBox chkIsPositive = new CheckBox(); chkIsPositive.ID = "chkIsPositive"; chkIsPositive.Visible = true; chkIsPositive.Enabled = false; ph.Controls.Add(chkIsPositive); ph.Controls.Add(new LiteralControl(@"</td>")); } public override void InstantiateInSeperator(PlaceHolder ph) { } public override void DataBindingOverride(object sender, EventArgs e) { PlaceHolder ph = (PlaceHolder)sender; DataListItem li = (DataListItem)ph.NamingContainer; int id = Convert.ToInt32(DataBinder.Eval(li.DataItem, "ID")); string group = (string)DataBinder.Eval(li.DataItem, "Group"); bool isPositive = Convert.ToBoolean(DataBinder.Eval(li.DataItem, "IsPositive")); switch (this.ListItemType) { case ListItemType.Item: case ListItemType.AlternatingItem: { ((Label)ph.FindControl("lblID")).Text = id.ToString(); ((Label)ph.FindControl("lblGroup")).Text = group; ((CheckBox)ph.FindControl("chkIsPositive")).Text = isPositive.ToString(); break; } case ListItemType.EditItem: case ListItemType.SelectedItem: { ((TextBox)ph.FindControl("lblID")).Text = id.ToString(); ((TextBox)ph.FindControl("txtGroup")).Text = group; ((CheckBox)ph.FindControl("chkIsPositive")).Text = isPositive.ToString(); break; } } } } From here I added the control to a page the code behind public partial class NominalGroupbroke : System.Web.UI.UserControl { public void SetNominalGroupList(IList<BONominalGroup> theNominalGroups) { XElement data = Serialiser<BONominalGroup>.SerialiseObjectList(theNominalGroups); ViewState.Add("nominalGroups", data.ToString()); dlNominalGroup.DataSource = theNominalGroups; dlNominalGroup.DataBind(); } protected void Page_init() { dlNominalGroup.HeaderTemplate = new NominalGroupTemplate(ListItemType.Header); dlNominalGroup.ItemTemplate = new NominalGroupTemplate(ListItemType.Item); dlNominalGroup.AlternatingItemTemplate = new NominalGroupTemplate(ListItemType.AlternatingItem); dlNominalGroup.SeparatorTemplate = new NominalGroupTemplate(ListItemType.Separator); dlNominalGroup.SelectedItemTemplate = new NominalGroupTemplate(ListItemType.SelectedItem); dlNominalGroup.EditItemTemplate = new NominalGroupTemplate(ListItemType.EditItem); dlNominalGroup.FooterTemplate = new NominalGroupTemplate(ListItemType.Footer); } protected void Page_Load(object sender, EventArgs e) { dlNominalGroup.ItemCommand += new DataListCommandEventHandler(dlNominalGroup_ItemCommand); } void dlNominalGroup_Init(object sender, EventArgs e) { dlNominalGroup.HeaderTemplate = new NominalGroupTemplate(ListItemType.Header); dlNominalGroup.ItemTemplate = new NominalGroupTemplate(ListItemType.Item); dlNominalGroup.AlternatingItemTemplate = new NominalGroupTemplate(ListItemType.AlternatingItem); dlNominalGroup.SeparatorTemplate = new NominalGroupTemplate(ListItemType.Separator); dlNominalGroup.SelectedItemTemplate = new NominalGroupTemplate(ListItemType.SelectedItem); dlNominalGroup.EditItemTemplate = new NominalGroupTemplate(ListItemType.EditItem); dlNominalGroup.FooterTemplate = new NominalGroupTemplate(ListItemType.Footer); } void dlNominalGroup_DataBinding(object sender, EventArgs e) { } void deleteNominalGroup(int index) { XElement data = XElement.Parse(Convert.ToString( ViewState["nominalGroups"] )); IList<BONominalGroup> list = Serialiser<BONominalGroup>.DeserialiseObjectList(data); FENominalGroup.DeleteNominalGroup(list[index].ID); list.RemoveAt(index); data = Serialiser<BONominalGroup>.SerialiseObjectList(list); ViewState["nominalGroups"] = data.ToString(); dlNominalGroup.DataSource = list; dlNominalGroup.DataBind(); } void updateNominalGroup(DataListItem theItem) { XElement data = XElement.Parse(Convert.ToString( ViewState["nominalGroups"])); IList<BONominalGroup> list = Serialiser<BONominalGroup>.DeserialiseObjectList(data); BONominalGroup old = list[theItem.ItemIndex]; BONominalGroup n = new BONominalGroup(); byte id = Convert.ToByte(((TextBox)theItem.FindControl("lblID")).Text); string group = ((TextBox)theItem.FindControl("txtGroup")).Text; bool isPositive = Convert.ToBoolean(((CheckBox)theItem.FindControl("chkIsPositive")).Text); n.ID = id; n.Group = group; n.IsPositive = isPositive; FENominalGroup.UpdateNominalGroup(old, n); list[theItem.ItemIndex] = n; data = Serialiser<BONominalGroup>.SerialiseObjectList(list); ViewState["nominalGroups"] = data.ToString(); } void dlNominalGroup_ItemCommand(object source, DataListCommandEventArgs e) { DataList l = (DataList)source; switch (e.CommandName) { case "SelectRow": { if (l.EditItemIndex == -1) { l.SelectedIndex = e.Item.ItemIndex; l.EditItemIndex = -1; } break; } case "EditRow": { if (l.SelectedIndex == e.Item.ItemIndex) { l.EditItemIndex = e.Item.ItemIndex; } break; } case "DeleteRow": { deleteNominalGroup(e.Item.ItemIndex); l.EditItemIndex = -1; try { l.SelectedIndex = e.Item.ItemIndex; } catch { l.SelectedIndex = -1; } break; } case "CancelRow": { l.SelectedIndex = l.EditItemIndex; l.EditItemIndex = -1; break; } case "SaveRow": { updateNominalGroup(e.Item); try { l.SelectedIndex = e.Item.ItemIndex; } catch { l.SelectedIndex = -1; } l.EditItemIndex = -1; break; } } } Lots of code there, I'm afraid, but it should build. Thanks if anyone manages to spot my silliness. The BONominalGroup class (please ignore my crazy getHash override, I'm not proud of it). IAudit can just be an empty interface here and all will be fine. It used to inherit from another class, I have cleaned that out - so the serialization logic may be broken here. public class BONominalGroup { public BONominalGroup() #region Fields and properties private Int16 _ID; public Int16 ID { get { return _ID; } set { _ID = value; } } private string _group; public string Group { get { return _group; } set { _group = value; } } private bool _isPositve; public bool IsPositive { get { return _isPositve; } set { _isPositve = value; } } #endregion public override bool Equals(object obj) { bool retVal = false; BONominalGroup ng = obj as BONominalGroup; if (ng!=null) if (ng._group == this._group && ng._ID == this.ID && ng.IsPositive == this.IsPositive) { retVal = true; } return retVal; } public override int GetHashCode() { return ToString().GetHashCode(); } public override string ToString() { return "BONominalGroup{ID:" + this.ID.ToString() + ",Group:" + this.Group.ToString() + ",IsPositive:" + this.IsPositive.ToString() + "," + "}"; } #region IXmlSerializable Members public override void ReadXml(XmlReader reader) { reader.ReadStartElement("BONominalGroup"); this.ID = Convert.ToByte(reader.ReadElementString("id")); this.Group = reader.ReadElementString("group"); this.IsPositive = Convert.ToBoolean(reader.ReadElementString("isPositive")); base.ReadXml(reader); reader.ReadEndElement(); } public override void WriteXml(XmlWriter writer) { writer.WriteElementString("id", this.ID.ToString()); writer.WriteElementString("group", this.Group); writer.WriteElementString("isPositive", this.IsPositive.ToString()); // writer.WriteStartElement("BOBase"); // base.WriteXml(writer); writer.WriteEndElement(); } #endregion }

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  • Javascript code inside updatepanel usercontrol.

    - by Ed Woodcock
    Ok: I've got an updatepanel on an aspx page that contains a single Placeholder. Inside this placeholder I'm appending one of a selection of usercontrols depending on certain external conditions (this is a configuration page). In each of these usercontrols there is a bindUcEvents() javascript function that binds the various jQuery and javascript events to buttons and validators inside the usercontrol. The issue I'm having is that the usercontrol's javascript is not being recognised. Normally, javascript inside an updatepanel is executed when the updatepanel posts back, however none of this code can be found by the page (I've tried running the function manually via firebug's console, but it tells me it cannot find the function). Does anyone have any suggestions? Cheers, Ed. EDIT: cut down (but functional) example: Markup: <script src="/js/jquery-1.3.2.min.js"></script> <form id="form1" runat="server"> <div> <asp:ScriptManager ID="Script" runat="server" /> <asp:Button ID="Postback" runat="server" Text="Populate" OnClick="PopulatePlaceholder" /> <asp:UpdatePanel ID="UpdateMe" runat="server"> <Triggers> <asp:AsyncPostBackTrigger ControlID="Postback" EventName="Click" /> </Triggers> <ContentTemplate> <asp:Literal ID="Code" runat="server" /> <asp:PlaceHolder ID="PlaceMe" runat="server" /> </ContentTemplate> </asp:UpdatePanel> </div> </form> C#: protected void PopulatePlaceholder(object sender, EventArgs e) { Button button = new Button(); button.ID = "Push"; button.Text = "push"; button.OnClientClick = "javascript:return false;"; Code.Text = "<script type=\"text/javascript\"> function bindEvents() { $('#" + button.ClientID + "').click(function() { alert('hello'); }); } bindEvents(); </script>"; PlaceMe.Controls.Add(button); }

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  • Opinion on "loop invariants", and are these frequently used in the industry?

    - by Michael Aaron Safyan
    I was thinking back to my freshman year at college (five years ago) when I took an exam to place-out of intro-level computer science. There was a question about loop invariants, and I was wondering if loop invariants are really necessary in this case or if the question was simply a bad example... the question was to write an iterative definition for a factorial function, and then to prove that the function was correct. The code that I provided for the factorial function was as follows: public static int factorial(int x) { if ( x < 0 ){ throw new IllegalArgumentException("Parameter must be = 0"); }else if ( x == 0 ){ return 1; }else{ int result = 1; for ( int i = 1; i <= x; i++ ){ result*=i; } return result; } } My own proof of correctness was a proof by cases, and in each I asserted that it was correct by definition (x! is undefined for negative values, 0! is 1, and x! is 1*2*3...*x for a positive value of x). The professor wanted me to prove the loop using a loop invariant; however, my argument was that it was correct "by definition", because the definition of "x!" for a positive integer x is "the product of the integers from 1... x", and the for-loop in the else clause is simply a literal translation of this definition. Is a loop invariant really needed as a proof of correctness in this case? How complicated must a loop be before a loop invariant (and proper initialization and termination conditions) become necessary for a proof of correctness? Additionally, I was wondering... how often are such formal proofs used in the industry? I have found that about half of my courses are very theoretical and proof-heavy and about half are very implementation and coding-heavy, without any formal or theoretical material. How much do these overlap in practice? If you do use proofs in the industry, when do you apply them (always, only if it's complicated, rarely, never)?

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  • Using Complex datatype with python SUDS client

    - by sachin
    hi, I am trying to call webservice from python client using SUDS. When I call a function with a complex data type as input parameter, it is not passed correctly, but complex data type is getting returned correctly froma webservice call. Webservice Type: Soap Binding 1.1 Document/Literal Webserver: Weblogic 10.3 Python Version: 2.6.5, SUDS version: 0.3.9 here is the code I am using: Python Client: from suds.client import Client url = 'http://192.168.1.3:7001/WebServiceSecurityOWSM-simple_ws-context-root/SimpleServicePort?WSDL' client = Client(url) print client #simple function with no operation on input... result = client.service.sopHello() print result result = client.service.add10(10) print result params = client.factory.create('paramBean') print params params.intval = 10 params.longval = 20 params.strval = 'string value' #print "params" print params try: result = client.service.printParamBean(params) print result except WebFault, e: print e try: result = client.service.modifyParamBean(params) print result except WebFault, e: print e print params webservice java class: package simple_ws; import javax.jws.Oneway; import javax.jws.WebMethod; import javax.jws.WebService; import javax.jws.soap.SOAPBinding; public class SimpleService { public SimpleService() { } public void sopHello(int i) { System.out.println("sopHello: hello"); } public int add10(int i) { System.out.println("add10:"); return 10+i; } public void printParamBean(ParamBean pb) { System.out.println(pb); } public ParamBean modifyParamBean(ParamBean pb) { System.out.println(pb); pb.setIntval(pb.getIntval()+10); pb.setStrval(pb.getStrval()+"blah blah"); pb.setLongval(pb.getLongval()+200); return pb; } } and the bean Class: package simple_ws; public class ParamBean { int intval; String strval; long longval; public void setIntval(int intval) { this.intval = intval; } public int getIntval() { return intval; } public void setStrval(String strval) { this.strval = strval; } public String getStrval() { return strval; } public void setLongval(long longval) { this.longval = longval; } public long getLongval() { return longval; } public String toString() { String stri = "\nInt val:" +intval; String strstr = "\nstrval val:" +strval; String strl = "\nlong val:" +longval; return stri+strstr+strl; } } so, as issue is like this: on call: client.service.printParamBean(params) in python client, output on server side is: Int val:0 strval val:null long val:0 but on call: client.service.modifyParamBean(params) Client output is: (reply){ intval = 10 longval = 200 strval = "nullblah blah" } What am i doing wrong here??

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