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• XCode File Browsing doesn't open files!

  - by user288024

  Previously when I browsed source code files using Xcode's file browser (located on left side), clicking on a source file would open it in the right window. I must've accidentally changed some setting that stops this behavior -- now single clicking on any file doesn't do anything at all. I'd really like it to go back to the old behavior of opening the file. Any ideas? This behavior is driving me crazy. To open a source file I have to double-click and open in a separate window.

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• what database should i choose ?

  - by MemoryLeak

  I use winforms to develop a desktop application, and right now I plan to use SQL server express, but the problem is, if i use sql server express, then the installation is much trouble, i need to install sql server first, and install my own applicaiton. Then I tried to use access 2003 as my database, then I only need to copy the mdb file with my application. But the access 's function is not that strong, the text length is limited to 255 byte. Is there any other database solution, which is easy to integrate to my application, and easy to install after i develop my application ? Many many desktop application have their own database, and easy to install and easy to use, what database do they use ?

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• I get error when trying to write response stream to a file

  - by MemphisDeveloper

  I am trying to test a rest webservice but when I do a post and try to retreive the save the response stream to a file I get an exception saying "Stream was not readable." What am I doing wrong? Public Sub PostAndRead() Dim flReader As FileStream = New FileStream("~\testRequest.xml", FileMode.Open, FileAccess.Read) Dim flWriter As FileStream = New FileStream("~\testResponse.xml", FileMode.Create, FileAccess.Write) Dim address As Uri = New Uri(restAddress) Dim req As HttpWebRequest = DirectCast(WebRequest.Create(address), HttpWebRequest) req.Method = "POST" req.ContentLength = flReader.Length req.AllowWriteStreamBuffering = True Dim reqStream As Stream = req.GetRequestStream() ' Get data from upload file to inData Dim inData(flReader.Length) As Byte flReader.Read(inData, 0, flReader.Length) ' put data into request stream reqStream.Write(inData, 0, flReader.Length) flReader.Close() reqStream.Close() ' Post Response req.GetResponse() ' Save results in a file Copy(req.GetRequestStream(), flWriter) End Sub

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• memory problem with metapost

  - by yCalleecharan

  Hi, I'm using gnuplot to plot a graph to the mp format and then I'm converting it to eps via the command: mpost --sprologues=3 -soutputtemplate=\"%j-%c.eps\" myfigu.mp But I don't get the eps output; instead I get this message: This is MetaPost, version 1.208 (kpathsea version 3.5.7dev) (mem=mpost 2009.12.12) 6 MAY 2010 23:16 **myfigu.mp (./myfigu.mp ! MetaPost capacity exceeded, sorry [main memory size=3000000]. _wc-withpen .currentpen.withcolor.currentcolor gpdraw-...ptpath[(EXPR0)]_sms((EXPR1),(EXPR2))_wc .else:_ac.contour.ptpath[(... l.48052 gpdraw(0,517.1a,166.4b) ; If you really absolutely need more capacity, you can ask a wizard to enlarge me. How do I tweak in order to get more memory. The file from which I'm plotting has two columns of 189,200 values each. These values are of type long double (output from a C program). The text file containing these two column values is about 6 MB. Thanks a lot...

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• Refresh databases data

  - by Simon

  How can i refresh the data from my database(ms access) in c# using windows form aplication? part of the code where i insert the data : insertCommand.Parameters.Add("@ID_uporabnika", OleDbType.Integer).Value = Convert.ToInt32(textBox6.Text); insertCommand.Parameters.Add("@datum", OleDbType.DBDate).Value = DateTime.Now.ToShortDateString(); insertCommand.Parameters.Add("@ID_zivila", OleDbType.Integer).Value = Convert.ToInt32(iDTextBox.Text); insertCommand.Parameters.Add("@skupaj_kalorij", OleDbType.Double).Value = Convert.ToDouble(textBox1.Text); empConnection.Open(); try { int count = insertCommand.ExecuteNonQuery(); } catch (OleDbException ex) { MessageBox.Show(ex.Message); } finally { empConnection.Close(); MessageBox.Show("zauižiti obrok je bil shranjen"); textBox1.Clear(); textBox2.Clear(); textBox3.Clear(); textBox4.Clear(); textBox5.Clear(); } }

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• SQLite doesn't have booleans or date-times...but C# does

  - by DanM

  I've been thinking about using SQLite for my next project, but I'm concerned that it seems to lack proper datetime and bit data types. If I use DbLinq (or some other ORM) to generate C# classes, will the data types of the properties be "dumbed down"? Will date-time data be placed in properties of type string or double? Will boolean data be placed in properties of type int? If yes, what are the implications? I'm envisioning a scenario where I need to write a whole second layer of classes with more specific data types and do a bunch of transformations and casts, but maybe it's not so bad. If you have any experience with this or a similar scenario, what are your "lessons learned"?

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• Grouping a generic list via LINQ in VB.NET

  - by CD Smith

  I need to take a collection and group it via Linq but all the examples I've seen fail in some manner or other with some syntax difference that I can't quite lick. My collection: Dim a As New List(Of ProcessAlert) a.Add(New ProcessAlert("0000112367", "[email protected]", "Alert", 2)) a.Add(New ProcessAlert("0000112367", "[email protected]", "Document", 2)) a.Add(New ProcessAlert("0000112367", "[email protected]", "Note", 2)) a.Add(New ProcessAlert("0000112367", "[email protected]", "Alert", 1)) a.Add(New ProcessAlert("0000112367", "[email protected]", "Document", 1)) a.Add(New ProcessAlert("0000112367", "[email protected]", "Note", 1)) Return a I need to turn this collection into a simple way to give this final outcome: "[email protected]", "Alert, Document, Note" "[email protected]", "Alert, Document, Note" Here's the definition of the ProcessAlert class: Public Class ProcessAlert Public LoanNumber As String Public EmailAddress As String Public AlertType As String Public AlertMethodID As Byte End Class Thanks in advance, CD

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• ASP.NET Chart control - how to make it Smaller or add a scrollbar

  - by nCdy

  How to make the table column width inside the chart smaller so I can see more values and how to add some scrollbar to see the values that I can't see on right sight . There is no changes in ASP (just added this element) here is a method how I drawing this line : if (dt != null) // dt - my DataTable { string seriesName = "Graph"; Chart1.Series.Add(seriesName); Chart1.Series[seriesName].ChartType = SeriesChartType.Line; Chart1.Series[seriesName].BorderWidth = 3; foreach (DataRow row in dt.Rows) { string columnName = row[0].ToString(); try { double YVal = Convert.ToDouble(row[1]); Chart1.Series[seriesName].Points.AddXY(columnName, YVal); } catch (Exception) { Chart1.Series[seriesName].Points.AddXY(columnName, 0); } } }

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• Custom Validator and specifying type of message

  - by user102533

  I have a custom validation in the enterprise validation block. The DoValidate method is as shown below. protected override void DoValidate(Double objectToValidate, object currentTarget, string key, ValidationResults validationResults) { if (!IsSalMoreThanMinWage(objectToValidate)) { //Here I need to mark this message as a "Warning" LogValidationResult(validationResults, "Salary is too low for this state", currentTarget, key); } } I'd need to mark this validation failure as a "warning" message. In the front end, when I iterate through the ValidationResults collection and grab a ValidationResult object, I would need to identify and group different types of messages and render them differently. My question is - how do I mark a failure as a warning?

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• Login method Customization using GINA [closed]

  - by netseng

  DUPLICATE:http://stackoverflow.com/questions/523912/login-method-customization-using-gina Hi All, I know it's not easy to find a master in GINA, but my question is most near to Interprocess Communication(IPC), I wrote my custom GINA in unmanaged c++, I included it a method that checks for validity of a fingerprint for the user try to login, this function will call some method in a running system windows service written in c#, the code follows: in GINA, unmanaged c++ if(Fingerprint.Validate(userName,finerprintTemplate) { //perform login } in windows service, C# public class Fingerprint { public static bool Validate(string userName, byte[] finerprintTemplate) { //Preform Some code to validate fingerprintTemplate with userName //and retuen result } } Does anyone know how to do such Communication between GINA and the windows service, or simply between c++ written service and C# written service. Thanks

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• Error in SQL Syntax ERROR1064

  - by 01010011

  Hi, Everytime I try to create the following table in MySQL command line: CREATE TABLE book(book_id int NOT NULL AUTO_INCREMENT PRIMARY KEY, isbn char(20), title char(20), author_f_name char(20), author_l_name char(20), condition ENUM("as new","very good","good","fair","poor"), price decimal(8,2), genre char(20)); I keep getting this error message: ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL version for the right syntax to use near 'condition ENUM("as new","very good","good","fair","poor"), price decimal(8,2), g' at line 6 I've tried using single quotes and double quotes for the ENUM options. Where did I go wrong?

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• ASP.NET WebMethod Returns JSON wrapped in quotes

  - by CL4NCY

  Hi, I have an asp.net page with a WebMethod on it to pass JSON back to my javascript. Bellow is the web method: [WebMethod] public static string getData(Dictionary<string, string> d) { string response = "{ \"firstname\": \"John\", \"lastname\": \"Smith\" }"; return response; } When this is returned to the client it is formatted as follows: { \"d\": \"{ \"firstname\": \"John\", \"lastname\": \"Smith\" }\" } The problem is the double quotes wrapping everything under 'd'. Is there something I've missed in the web method or some other means of returning the data without the quotes? I don't really want to be stripping it out on the client everytime. Also I've seen other articles where this doesn't happen. Any help would be appreciated thanks.

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• Using objects with STL vector - minimal set of methods

  - by osgx

  Hello What is "minimal framework" (necessary methods) of object, which I will use with STL <vector>? For my assumptions: #include <vector> #include <cstring> using namespace std; class Doit { private: char *a; public: Doit(){a=(char*)malloc(10);} ~Doit(){free(a);} }; int main(){ vector<Doit> v(10); } gives *** glibc detected *** ./a.out: double free or corruption (fasttop): 0x0804b008 *** Aborted and in valgrind: malloc/free: 2 allocs, 12 frees, 50 bytes allocated.

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• Why does my buffered GraphicsContext application have a flickering problem?

  - by Bibendum

  import wx class MainFrame(wx.Frame): def __init__(self,parent,title): wx.Frame.__init__(self, parent, title=title, size=(640,480)) self.mainPanel=DoubleBufferTest(self,-1) self.Show(True) class DoubleBufferTest(wx.Panel): def __init__(self,parent=None,id=-1): wx.Panel.__init__(self,parent,id,style=wx.FULL_REPAINT_ON_RESIZE) self.SetBackgroundColour("#FFFFFF") self.timer = wx.Timer(self) self.timer.Start(100) self.Bind(wx.EVT_TIMER, self.update, self.timer) self.Bind(wx.EVT_PAINT,self.onPaint) def onPaint(self,event): event.Skip() dc = wx.MemoryDC() dc.SelectObject(wx.EmptyBitmap(640, 480)) gc = wx.GraphicsContext.Create(dc) gc.PushState() gc.SetBrush(wx.Brush("#CFCFCF")) bgRect=gc.CreatePath() bgRect.AddRectangle(0,0,640,480) gc.FillPath(bgRect) gc.PopState() dc2=wx.PaintDC(self) dc2.Blit(0,0,640,480,dc,0,0) def update(self,event): self.Refresh() app = wx.App(False) f=MainFrame(None,"Test") app.MainLoop() I've come up with this code to draw double buffered GraphicsContext content onto a panel, but there's a constant flickering across the window. I've tried different kinds of paths, like lines and curves but it's still there and I don't know what's causing it.

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• Why can't I reclaim my dynamically allocated memory using the "delete" keyword?

  - by synaptik

  I have the following class: class Patient { public: Patient(int x); ~Patient(); private: int* RP; }; Patient::Patient(int x) { RP = new int [x]; } Patient::~Patient() { delete [] RP; } I create an instance of this class on the stack as follows: void f() { Patient p(10); } Now, when f() returns, I get a "double free or corruption" error, which signals to me that something is attempted to be deleted more than once. But I don't understand why that would be so. The space for the array is created on the heap, and just because the function from inside which the space was allocated returns, I wouldn't expect the space to be reclaimed. I thought that if I allocate space on the heap (using the new keyword), then the only way to reclaim that space is to use the delete keyword. Help! :)

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• Mapping an Array to a Single Row

  - by João Bragança

  I have the following classes: public class InventoryItem { private Usage[] usages = new Usage[12]; virtual public Usage[] Usages { get { return usages; }} virtual public string Name{get;set;} } public class Usage { virtual public double Quantity{get;set;} virtual public string SomethingElse{get;set;} } I know that Usages.Length will always be 12. I think it would be best to store it in the DB like so: Name nvarchar(64), Usage_Quantity_0 float, Usage_SomethingElse_0 nvarchar(16), Usage_Quantity_1 float, Usage_SomethingElse_1 nvarchar(16), ... Usage_Quantity_11 float, Usage_SomethingElse_11 nvarchar(16), How can I get this done?

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• Something like System.Diagnostics.Process.Start to run a stream

  - by phenevo

  Hi, I get from server images and videos by stream. Now I'm saving it: Stream str = client.GetFile(path); using (var outStream = new FileStream(@"c:\myFile.jpg", FileMode.Create)) { var buffer = new byte[4096]; int count; while ((count = str.Read(buffer, 0, buffer.Length)) > 0) { outStream.Write(buffer, 0, count); } } I can be jpg, mpg, flv and a lot of other multimedia types (Before I get stream I know what is a extension of this file). Now I want to not save it , bu run direct from stream. Is it possible ??

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• Using a "vo" for joined data?

  - by keithjgrant

  I'm building a small financial system. Because of double-entry accounting, transactions always come in batches of two or more, so I've got a batch table and a transaction table. (The transaction table has batch_id, account_id, and amount fields, and shared data like date and description are relegated to the batch table). I've been using basic vo-type models for each table so far. Because of this table structure structure, though, transactions will almost always be selected with a join on the batch table. So should I take the selected records and splice them into two separate vo objects, or should I create a "shared" vo that contains both batch and transaction data? There are a few cases in which batch records and/or transaction records. Are there possible pitfalls down the road if I have "overlapping" vo classes?

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• How do you use Java 1.6 Annotation Processing to perform compile time weaving?

  - by Steve

  I have created an annotation, applied it to a DTO and written a Java 1.6 style annotationProcessor. I can see how to have the annotationProcessor write a new source file, which isn't what I want to do, I cannot see or find out how to have it modify the existing class (ideally just modify the byte code). The modification is actually fairly trivial, all I want the processor to do is to insert a new getter and setter where the name comes from the value of the annotation being processed. My annotation processor looks like this; @SupportedSourceVersion(SourceVersion.RELEASE_6) @SupportedAnnotationTypes({ "com.kn.salog.annotation.AggregateField" }) public class SalogDTOAnnotationProcessor extends AbstractProcessor { @Override public boolean process(final Set<? extends TypeElement> annotations, final RoundEnvironment roundEnv) { //do some stuff } }

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• Defining - and dealing with - Evil

  - by Chris Becke

  As a software developer one sometimes gets feature requests that seem to be in some kind of morally grey area. Sometimes one can deflect them, or implement them in a way that feels less 'evil' - sometimes - on reflection - while the feature request 'feels' wrong theres no identifiable part of it that actually causes harm. Sometimes one feels a feature is totally innocent but various anti virus products start tagging one as malware. For example - I personally consider EULAs to (a) hopefully be unenforceable and (b) a means by which rights are REMOVED from consumers. However Anti Virus scanners frequently mark as malware any kind of download agent that does not display a EULA. Which to me is the result of a curious kind of double think. What I want to know is - are there any online (or offline) resources that cover evil software development practices? How can I know if a software practice that I consider dodgy is in fact evil enough to consider fighting?

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• Getting error 400 / 404 - HttpUtility.UrlEncode not encoding full string?

  - by Justin808

  Why do the following URLs give me the IIS errors below: A) http://192.168.1.96/cms/View.aspx/Show/Small+test' A2) http://192.168.1.96/cms/View.aspx/Show/Small%20test' <-- this works, but is not the result from HttpUtility.UrlEncode() B) http://192.168.1.96/cms/View.aspx/Show/'%26$%23funky**!!~''+page Error for A: HTTP Error 404.11 - Not Found The request filtering module is configured to deny a request that contains a double escape sequence. Error for B: HTTP Error 400.0 - Bad Request ASP.NET detected invalid characters in the URL. The last part of the URL after /Show/ is the result after the text is being sent through HttpUtility.UrlEncode() so, according to Microsoft it is URL Encoded correctly. If I user HttpUtility.UrlPathEncode() rather than HttpUtility.UrlEncode() I get the A2 results. But B ends up looking like: http://192.168.1.96/TVCMS-CVJZ/cms/View.aspx/Show/'&$#funky**!!~''%20page which is still wrong. Does Microsoft know how to URL Encode at all? Is there a function someone has written up to do it the correct way?

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• Marshal managed string[] to unmanaged char**

  - by Vince

  This is my c++ struct (Use Multi-Byte Character Set) typedef struct hookCONFIG { int threadId; HWND destination; const char** gameApps; const char** profilePaths; } HOOKCONFIG; And .Net struct [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)] public struct HOOKCONFIG { public int threadId; public IntPtr destination; // MarshalAs? public string[] gameApps; // MarshalAs? public string[] profilePaths; } I got some problem that how do I marshal the string array? When I access the struct variable "profilePaths" in C++ I got an error like this: An unhandled exception of type 'System.AccessViolationException' occurred in App.exe Additional information: Attempted to read or write protected memory. This is often an indication that other memory is corrupt. MessageBox(0, cfg.profilePaths[0], "Title", MB_OK); // error ... Orz

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• Local Data Cache - How do I refresh the local db when I add fields to remote db?

  - by Chu

  I'm using a Local Data Cache in an ASP.NET 3.5 environment. I made a change in my main database by adding a new field. I double click on my .SYNC file in my project to startup the Local Data Cache wizard again. The wizard starts and I click OK with the hopes that it'll re-query my database and add the new field to the local database file. Instead, I get an error saying "Synchronizing the databae failed with the message: Unable to enumerate changes at the DbServerSyncProvider..." The only way I know to get things working again is to delete the .SYNC file along with the local database and start it from scratch. There's got to be an easier way... anyone know it?

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• Fast read of certain bytes of multiple files in C/C++

  - by Alejandro Cámara

  I've been searching in the web about this question and although there are many similar questions about read/write in C/C++, I haven't found about this specific task. I want to be able to read from multiple files (256x256 files) only sizeof(double) bytes located in a certain position of each file. Right now my solution is, for each file: Open the file (read, binary mode): fstream fTest("current_file", ios_base::out | ios_base::binary); Seek the position I want to read: fTest.seekg(position*sizeof(test_value), ios_base::beg); Read the bytes: fTest.read((char *) &(output[i][j]), sizeof(test_value)); And close the file: fTest.close(); This takes about 350 ms to run inside a for{ for {} } structure with 256x256 iterations (one for each file). Q: Do you think there is a better way to implement this operation? How would you do it?

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• Downloaded chm is blocked, is there a solution?

  - by David Rutten

  CHM files that are downloaded are often tagged as potentially malicious by Windows, which effectively blocks all the html pages inside of it. There's an easy fix (just unblock the file after you download it), but I was wondering if there's a better way to provide unblocked chm files. What if I were to download the chm file (as a byte stream) from our server inside the application, then write all the data to a file on the disk. Would it still be blocked? Is there another/better way still?

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