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  • SQLConnection.Open(); throwing exception

    - by flavour404
    Hi, Updating an old piece of software but in order to maintain backward compatibility I need to connect to a .mdb (access) database. I am using the following connection but keep getting an exception, why? I have validated the path, database existence etc. and that is all correct. string Server = "localhost"; string Database = drive + "\\btc2\\state\\states.mdb"; string Username = ""; string Password = "Lhotse"; string ConnectionString = "Data Source = " + Server + ";" + "Initial Catalog = " + Database + ";" + "User Id = '';" + "Password = " + Password + ";"; SqlConnection SQLConnection = new SqlConnection(); try { SQLConnection.ConnectionString = ConnectionString; SQLConnection.Open(); } catch (Exception Ex) { // Try to close the connection if (SQLConnection != null) SQLConnection.Dispose(); // //can't connect // // Stop here return false; }

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  • Databinding race condition

    - by Stephen Price
    I have a login form (using ChildWindow) and have implemented a Keyup event handler on the passwordbox. If the key is enter then it sets the ChildWindow ResultDialog to true. What seems to be happening is the databinding on the Passwordbox is not happening before the childwindow is closed so the Password property on my Login control is null. I've tried using KeyUp and Keydown, as well as using a buttonAutoPeer to invoke a click on the Ok button. I've also tried setting the focus to the OKbutton before setting the DialogResult (which closes the window). private void PasswordBox_KeyUp(object sender, KeyEventArgs e) { if (e.Key == Key.Enter) { if (UsernameBox.Text != userPrompt && !string.IsNullOrEmpty(PasswordBox.Password.Trim())) { this.DialogResult = true; } else { UsernameBox.Focus(); } } }

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  • Generic type parameters using out

    - by Mikael
    Im trying to make a universal parser using generic type parameters, but i can't grasp the concept 100% private bool TryParse<T>(XElement element, string attributeName, out T value) where T : struct { if (element.Attribute(attributeName) != null && !string.IsNullOrEmpty(element.Attribute(attributeName).Value)) { string valueString = element.Attribute(attributeName).Value; if (typeof(T) == typeof(int)) { int valueInt; if (int.TryParse(valueString, out valueInt)) { value = valueInt; return true; } } else if (typeof(T) == typeof(bool)) { bool valueBool; if (bool.TryParse(valueString, out valueBool)) { value = valueBool; return true; } } else { value = valueString; return true; } } return false; } As you might guess, the code doesn't compile, since i can't convert int|bool|string to T (eg. value = valueInt). Thankful for feedback, it might not even be possible to way i'm doing it. Using .NET 3.5

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  • Force jQuery to accept XHTML string as XML?

    - by MidnightLightning
    So, as part of a baseline OpenID implementation in Javascript, I'm fetching a remote page source through AJAX, and looking for the <link rel="openid.server" href="http://www.example.com" /> tag in the head. I'm using the jQuery javascript library for the AJAX request, but am unable to parse out the link tags. Several other online sources talk about using the usual jQuery selectors to grab tags from XML/XHTML sources, but it seems jQuery can only get content from the body of an HTML document, not the head (which is where the link tags are; $(response).find('link') returns null). So, I'd either need to get jQuery to force this document into XML mode or otherwise get at the head tags. Is there a way to force jQuery to parse the response of an AJAX query as XML, when it's in reality XHTML? Or do I need to fall back to regular expressions to get the link tags out?

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  • NSXMLParser error code 65

    - by Zhongcai
    Hi guys, NSXMLParser is giving me the following error: "Error 65, Description: (null), Line: 1, Column: 47" I've checked the documentation, and it says that a space is required at column47??. Was hoping someone can help out on this? The raw xml file is as follows. Strangely, the parser works intermittently at times, and for the same xml file. <?xml version="1.0"?> <contacts> <known> <pid>116</pid> <abid>188</abid> <latitude>1.417320695</latitude> <longitude>103.7597807</longitude> <status>Available</status> </known> </contacts>

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  • Javascript sleep

    - by fmsf
    Is any better way than this function to make a sleep in javascript, or should I just use that function? (taken from here) function pausecomp(millis) { var date = new Date(); var curDate = null; do { curDate = new Date(); } while(curDate-date < millis); } This is not a dupe of http://stackoverflow.com/questions/758688/sleep-in-javascript I want a real sleep in a middle of a function, not a delay for a piece of code;

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  • Is this an F# quotations bug?

    - by ControlFlow
    [<ReflectedDefinition>] let rec x = (fun() -> x + "abc") () The sample code with the recursive value above produces the following F# compiler error: error FS0432: [<ReflectedDefinition>] terms cannot contain uses of the prefix splice operator '%' I can't see any slicing operator usage in the code above, looks like a bug... :) Looks like this is the problem with the quotation via ReflectedDefinitionAttribute only, normal quotation works well: let quotation = <@ let rec x = (fun() -> x + "abc") () in x @> produces expected result with the hidden Lazy.create and Lazy.force usages: val quotation : Quotations.Expr<string> = LetRecursive ([(x, Lambda (unitVar, Application (Lambda (unitVar0, Call (None, String op_Addition[String,String,String](String, String), [Call (None, String Force[String](Lazy`1[System.String]), [x]), Value ("abc")])), Value (<null>)))), (x, Call (None, Lazy`1[String] Create[String](FSharpFunc`2[Unit,String]), [x])), (x, Call (None, String Force[String](Lazy`1[String]), [x]))], x) So the question is: is this an F# compiler bug or not?

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  • Add columns to a datatable in c#?

    - by Pandiya Chendur
    I have a csv reader class that reads a .csv file and its values.... I have created datatable out of it... Consider my Datatable contains three header columns Name,EmailId,PhoneNo.... The values have been added successfully.... Now i want to add two columns IsDeleted,CreatedDate to this datatable... I have tried this but it doesn't seem to work, foreach (string strHeader in headers) { dt.Columns.Add(strHeader); } string[] data; while ((data = reader.GetCSVLine()) != null) { dt.Rows.Add(data); } dt.Columns.Add("IsDeleted", typeof(byte)); dt.Columns.Add(new DataColumn("CreatedDate", typeof(DateTime))); foreach (DataRow dr in dt.Rows) { dr["IsDeleted"] = Convert.ToByte(0); dr["CreatedDate"] = Convert.ToDateTime(System.DateTime.Now.ToString()); dt.Rows.Add(dr); } When i try to add isdeleted values an error saying This row already belongs to this table. ....

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  • Windows API - Beginner help

    - by nXqd
    I try to create a very simple app using windows API. I've done some small apps in console. This is the first time I do with Win32 apps. I've searched and found a document from forgers which is recommended in this site. But I try to write very first line: #include <stdafx.h> #include <windows.h> int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) { MessageBoxW (NULL, "Good bye Cruel World", "Note", MB_OK ); return 0; } But it doesn't work ( erased lines from default project created by VS 2008 and write these lines ) Waiting for your answers :)

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  • System.Net.WebProxy in .NET Client

    - by NealWalters
    I don't yet have a good understanding of how the network is set up at my current client, but here is my issue. The vendor has a normal URL, but it might be a leased line. I have a .NET program that calls an external .asmx service. If I go to IE, Connections, LAN Settings, and uncheck "Automatic detect settings" and uncheck "Use Automatic Configuration Sript", then the .NET program runs and access the web service fine. But then, to access internet again from the browser, I have to re-check the two boxes, and so on throughout the day while we are testing and browsing. I'm hoping to put some code like this in the .NET program to avoid us having to constantly change: if (chkUseProxy.Checked) { myclient.Proxy = new System.Net.WebProxy(""); } I tried null and empty string and so far not able to connect without errors. Is this possible, and if so, what might be the correct parms for the constructor? Or are there other objects or properties that would need to be set? Thanks, Neal Walters

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  • Java generic return type

    - by Colby77
    Hi, I'd like to write a method that can accept a type param (or whatever the method can figure out the type from) and return a value of this type so I don't have to cast the return type. Here is a method: public Object doIt(Object param){ if(param instanceof String){ return "string"; }else if(param instanceof Integer){ return 1; }else{ return null; } } When I call this method, and pass in it a String, even if I know the return type will be a String I have to cast the return Object. This is similar to the int param. How shall I write this method to accept a type param, and return this type?

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  • Embedding Ruby, calling a function from C

    - by ThePower
    Hi, I'm writing an app that calls ruby code from c. I am having a little difficulty and wondered if anyone could point me in the rite direction. I currently have in my C. #include ruby.h main() { ruby_init(); rb_require("myRubyFile"); rb_funcall(rb_module_new(), rb_intern("RubyFunction"), 0, NULL); } My ruby file is in the same directory as my c file and is called myRubyFile.rb and contains a definition of the function RubyFunction(). This is a cut down of what I actually want to do, just making it more readable for others. I just require some feedback as to whether this is the correct method to call ruby code from my c file. Regards

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  • Global WH_CBT hook DLL is loaded into some processes only

    - by kriau
    The main program calls the function SetHook in the wi.dll to install global WH_CBT hook. bool WI_API SetHook() { if (!g_hHook) { g_hHook = SetWindowsHookEx(WH_CBT, (HOOKPROC) CBTProc, g_hInstDll, 0); } return g_hHook != NULL; } I presume after installing global hook, wi.dll should be loaded into each process' address space. However wi.dll is loaded in to some processes only. For example, if I start Skype, MS Word I can see that wi.dll is loaded into these processes as well (using Process Explorer), however if I run Firefox, uTorrent, Adobe Reader then wi.dll is not loaded into these processes. I'm using W7 64-bit, main program and wi.dll is 32-bit, all programs mentioned here is 32-bit programs as well. Any ideas why that happens? Thanks in advance.

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  • How does Linq-to-Xml convert objects to strings?

    - by Eamon Nerbonne
    Linq-to-Xml contains lots of methods that allow you to add arbitrary objects to an xml tree. These objects are converted to strings by some means, but I can't seem to find the specification of how this occurs. The conversion I'm referring to is mentioned (but not specified) in MSDN. I happen to need this for javascript interop, but that doesn't much matter to the question. Linq to Xml isn't just calling .ToString(). Firstly, it'll accept null elements, and secondly, it's doing things no .ToString() implementation does: For example: new XElement("elem",true).ToString() == "<elem>true</elem>" //but... true.ToString() == "True" //IIRC, this is culture invariant, but in any case... true.ToString(CultureInfo.InvariantCulture) == "True" Other basic data types are similarly specially treated. So, does anybody know what it's doing and where that's described?

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  • kill -9 + disable messages (standart output) from kill command

    - by yael
    hi all I write the following script this script enable timeout of 20 second if grep not find the relevant string in the file the script working well but the output from the script is like that: ./test: line 11: 30039: Killed how to disable this message from the kill command? how to tell kill command to ignore if process not exist? THX Yael !/bin/ksh ( sleep 20 ; [[ ! -z ps -ef | grep "qsRw -m1" | awk '{print $2}' ]] && kill -9 2/dev/null ps -ef | grep "qsRw -m1" | awk '{print $2}' ; sleep 1 ) & RESULT=$! print "the proccess:"$RESULT grep -qsRw -m1 "monitohhhhhhhr" /var if [[ $? -ne 0 ]] then print "kill "$RESULT kill -9 $RESULT fi print "ENDED" ./test the proccess:30038 ./test: line 11: 30039: Killed kill 3003

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  • how to select the min value using having key word

    - by LOVE_KING
    I have created the table stu_dep_det CREATE TABLE `stu_dept_cs` ( `s_d_id` int(10) unsigned NOT NULL auto_increment, `stu_name` varchar(15) , `gender` varchar(15) , `address` varchar(15),`reg_no` int(10) , `ex_no` varchar(10) , `mark1` varchar(10) , `mark2` varchar(15) , `mark3` varchar(15) , `total` varchar(15) , `avg` double(2,0), PRIMARY KEY (`s_d_id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 ROW_FORMAT=DYNAMIC AUTO_INCREMENT=8 ; then Inserted the values INSERT INTO `stu_dept_cs` (`s_d_id`, `stu_name`, `gender`, `address`, `reg_no`, `ex_no`, `mark1`, `mark2`, `mark3`, `total`, `avg`) VALUES (1, 'alex', 'm', 'chennai', 5001, 's1', '70', '90', '95', '255', 85), (2, 'peter', 'm', 'chennai', 5002, 's1', '80', '70', '90', '240', 80), (6, 'parv', 'f', 'mumbai', 5003, 's1', '88', '60', '80', '228', 76), (7, 'basu', 'm', 'kolkatta', 5004, 's1', '85', '95', '56', '236', 79); I want to select the min(avg) using having keyword and I have used the following sql statement SELECT * FROM stu_dept_cs s having min(avg) Is it correct or not plz write the correct ans....

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  • django model Form. Include fields from related models

    - by Tom
    Hi. I have a model, called Student, which has some fields, and a OneToOne relationship with user (django.contrib.auth.User). class Student(models.Model): phone = models.CharField(max_length = 25 ) birthdate = models.DateField(null=True) gender = models.CharField(max_length=1,choices = GENDER_CHOICES) city = models.CharField(max_length = 50) personalInfo = models.TextField() user = models.OneToOneField(User,unique=True) Then, I have a ModelForm for that model class StudentForm (forms.ModelForm): class Meta: model = Student Using the fields attribute in class Meta, i've managed to show only some fields in a template. However, can I indicate which user fields to show? Something as: fields =('personalInfo','user.username') is currently not showing anything. Works with only StudentFields though/ Thanks in advance.

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  • Enabling Hibernate second-level cache with JPA on JBoss 4.2

    - by Peter Hilton
    What are the steps required to enable Hibernate's second-level cache, when using the Java Persistence API (annotated entities)? How do I check that it's working? I'm using JBoss 4.2.2.GA. From the Hibernate documentation, it seems that I need to enable the cache and specify a cache provider in persistence.xml, like: <property name="hibernate.cache.use_second_level_cache" value="true" /> <property name="hibernate.cache.provider_class" value="org.hibernate.cache.HashtableCacheProvider" /> What else is required? Do I need to add @Cache annotations to my JPA entities? How can I tell if the cache is working? I have tried accessing cache statistics after running a Query, but Statistics.getSecondLevelCacheStatistics returns null, perhaps because I don't know what 'region' name to use.

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  • Render a user control ascx

    - by Jeremy
    I want to use an ascx as a template, and render it programatically, using the resulting html as the return value of an ajax method. Page pageHolder = new Page(); MyUserControl ctlRender = (MyUserControl)pageHolder.LoadControl(typeof(MyUserControl),null); pageHolder.Controls.Add(ctlRender); System.IO.StringWriter swOutput = new System.IO.StringWriter(); HttpContext.Current.Server.Execute(pageHolder, swOutput, false); return swOutput.ToString(); This all executes, and the Page Load event of the user control fires, but the StringWriter is always empty. I've seen similar code to this in other examples, what am I missing?

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  • Entity Framework mant to many insert

    - by Jacob
    I've been playing around with Entity Framework v2 and added some code to insert new entity with many to many relationship , lets say this entity is called meeting. I add hours to meeting : meeting.Hours.Add(hour); and I get different errors on different occasions On Update : Cannot insert the value NULL into column 'Meetings_Id', table 'Plan.dbo.MeetingHour'; column does not allow nulls. INSERT fails. The statement has been terminated. On Inset : An item with the same key has already been added. But the tricky party is that if I add this manually trough SQL Server Management Studio , I can update the entity with the same value , clearing it first (meeting.Hour.Clear()) Can't see what could be the problem , maybe entity model isn't mapped correctly ?

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  • ASP.NET MVC Route Contraints with {ID}-{Slug} Format

    - by TimLeung
    I have a route like following, ideally I would like it to match: domain.com/layout/1-slug-is-the-name-of-the-page routes.MapRoute( "Layout", // Route name "layout/{id}-{slug}", // URL with parameters new { controller = "Home", action = "Index", id = @"\d+$" } ); But when I hit the url, I am keep on getting this exception: The parameters dictionary contains a null entry for parameter 'id' of non-nullable type 'System.Int32' for method 'System.Web.Mvc.ActionResult Index(Int32)' in .... The above route will match the following though: domain.com/layout/1-slug or domain.com/layout/1-slug_permalink Seems like the hyphen that separates the ID from the Slug is causing issues.

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  • Search Route in ASP.NET MVC

    - by olst
    Hi. I have a simple search form in my master page and a serach controller and view. I'm trying to get the following route for the string search term "myterm" (for example): root/search/myterm The form in the master page : <% using (Html.BeginForm("SearchResults", "Search", FormMethod.Post, new { id = "search_form" })) { %> <input name="searchTerm" type="text" class="textfield" /> <input name="search" type="submit" value="search" class="button" /> <%} %> The Controller Action: public ActionResult SearchResults(string searchTerm){...} The Route I'm Using : routes.MapRoute( "Search", "search/{term}", new { controller = "Search", action = "SearchResults", term = (string)null } ); routes.MapRoute( "Default", "{controller}/{action}", new { controller = "Home", action = "Index" } ); I'm always getting the url "root/search" without the search term, no matter what search term I enter. Thanks.

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  • nHibernate Criteria API Projections

    - by Craig
    I have an entity that is like this public class Customer { public Customer() { Addresses = new List<Address>(); } public int CustomerId { get; set; } public string Name { get; set; } public IList<Address> Addresses { get; set; } } And I am trying to query it using the Criteria API like this. ICriteria query = m_CustomerRepository.Query() .CreateAlias("Address", "a", NHibernate.SqlCommand.JoinType.LeftOuterJoin); var result = query .SetProjection(Projections.Distinct( Projections.ProjectionList() .Add(Projections.Alias(Projections.Property("CustomerId"), "CustomerId")) .Add(Projections.Alias(Projections.Property("Name"), "Name")) .Add(Projections.Alias(Projections.Property("Addresses"), "Addresses")) )) .SetResultTransformer(new AliasToBeanResultTransformer(typeof(Customer))) .List<Customer>() as List<Customer>; When I run this query the Addresses property of the Customer object is null. Is there anyway to add a projection for this List property?

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  • Use ASP.Net server control code generation from .ashx

    - by Matt Dawdy
    I'm trying to take an existing bunch of code that was previously on a full .aspx page, and do the same stuff in a .ashx handler. The code created an HtmlTable object, added rows and cells to those rows, then added that html table the .aspx's controls collection, then added it to a div that was already on the page. I am trying to keep the code in tact but instead of putting the control into a div, actually generate the html and I'll return that in a big chunk of text that can be called via AJAX client-side. HtmlTable errors out when I try to use the InnerHtml property (says it isn't supported), and when I try RenderControl, after making first a TextWriter and next an HtmlTextWriter object, I get the error that Page cannot be null. Has anyone done this before? Any suggestions?

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  • Refresh/Reset View

    - by Jay
    Hi, I'm using MVP in WPF and I came across a design doubt and I would to get your opinion on this: At some point I need to refresh my view and perform the same initial queries, like when the view was loading. The view's DataContext is my presenter and I have a couple of collections and other variables that are bound to the view. When I need to refresh the view, I'm clearing the collections and the variables and setting the DataContext to null. After that I fetch new data, populate the collections and set the DataContext. Is this the best way to achieve this? The issue with this, is that i'm affraid that when my app grows bigger I forget to reset some variable...the ideal would be to reload the view again in some way without having to worry with the variables I have. Best regards.

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