How to tell if the Ctrl key is pressed without being inside a keypress/keyup/keydown event? I want distinguish between a "click" and a "ctrl+click" on a button. any suggestion? thanks ...more >>

Hi, Does anyone know how do I create a .NET solution dynamically? I have a csharp file I need to wrap in a solution and add some references to it (- all done by another application at run time of course). I guess I need to use the visual studio classes. Can someone drop me a lead on that issue...more >>

OK I have made a little progress on this.... Seems I was missing: dataset.Tables[0].AcceptChanges(); However, this alone did not fix it.... I needed to manually assign the value from the 'bound' textbox, by doing... dataset.Tables[0].Rows[0]["Name"]=boundtextbox.Text.ToString(); This...more >>

Dear NG, I am writing a .NET CF forms app. that needs to dynamically configure buttons on a form. Since the forms designer doesn't like component arrays I am using ordinary instance names for each button (btn0, btn1 etc.) as private members of the form class, but need to reference these from ...more >>

I think we always new a class like below:ClassName1 OjbectName=new ClassName1();But I find some example codes which new a class with different classClassName1 OjbectName=new ClassName2();What is the purpose to do so? ...more >>

The good news: I tracked down this article which discusses a technique for placing objects in the Datagrid. The Bad news: The link to the source is unavailble and I need more to go on. http://www.dnzone.com/ShowDetail.asp?NewsId=227...more >>

Is there a way to programatically intercept a Net Send command before the Messenger Service popup appears? I need to log the sender and the message text. How does the Messenger Service works? Has anyone tried to write a program replacing Message Service? To write an application listening t...more >>

I am doing a transfer operation from one database to another. During that time, I want to lock some tables so no new data can be written. How can I do this ? -- incognito...updated almost daily http://kentpsychedelic.blogspot.com Texeme Textcasting Technology http://texeme.com ...more >>

Hi I am trying to find some code, or reference docs, to assist in helping capture images from an image capture device (ie. webcam etc etc). I want to be able to compare successive images coming from the device, and be able to detect if the image has changed from the previous one. I have fo...more >>

how to use a class variable without initiate for example: ClassA { int var1; } ClassB{ ClassA aa = new ClassA(); // omit this aa.var1 = 1; // call this variable directly } I am thinking I may try something like this: ClassA::var1 = 1; hope yo...more >>

I have the following line of code, using System.DirectoryServices and System.Runtime.InteropServices towards CDOEXM: ((CDOEXM.IExchangeMailbox) User.NativeObject).MoveMailbox (NewHomeMDB) ; Where User is a DirectoryEntry for a mailbox enbaled user. This line of code works perfectly when r...more >>

How is it possible to quickly substitute a string in a text file? Thanks, Daniele ...more >>

hi all, hope some one can help iv created a datagrid that points to a DataView. the data view takes in a DataTable. The DataTable then adds the columns using DataColumn. All fine so far. The table is set up and i can add stuff to it (text). however i had made it so that u can't change ...more >>

Hi all, I am writing a program that has to draw musical notes on a staff. To do this I need to draw Ellispses (representing the notes) on a horizontal line and rotate them slightly (by 15 degrees). So there might be say, 3 ellispses each one seperated from the next by 30 pixals along the x-...more >>

Hi I am having this InvalidOperationException with message Cannot call Invoke or InvokeAsync on a control until the window handle has been created This is raised when i try to invoke a method with arguments I need to do this as the method is being called Asynchronously from elsewhere using ...more >>

Hi! Everyone I have an FTP server application thru which i am uploading files in my parent application This is working fine. What i want to know is that is there any method thru which i can get to know the amount of data that has been transferred. e.g i have a 10 mb file that is being uploaded...more >>

Hi, I'm using the following code to request the html source from the quoted site. ...... string url = "http://www1.soccerstand.com/"; WebRequest webRequest = WebRequest.Create(url); WebResponse webResponse = webRequest.GetResponse(); beginStr = new StreamReader(webResponse.GetResponseStre...more >>

How can I find out how many threads are running inside my application? Either in the ThreadPool or outside of it? Thanks...more >>

Im running a demo database application for a pocketpc device. When it runs in debug mode in the emulator I notice that it also downloads the associated database file with it. I'm using c# in Visual Studio .net 2003 How do I do the same thing please? I don't know where to look to find out wher...more >>

I'm getting the following eror when I try to connect to msde in my local machine: System.Data.SqlClient.SqlException: Login failed for user 'CORE-XP\ASPNET'. my connection string is: SqlConnection cnn = new SqlConnection(";Integrated Security=SSPI;database=varired;server=(local);"); S...more >>

It it possible to change a button's or text box's font size during runtime? When I try to build my application with this code: this.ActiveControl.Font.Size = "8.25"; I get this error message: Property or indexer "System.Drawing.Font.Size' cannot be assigned to -- it is read only I can cha...more >>

Hi, This is probably a simple question but I'm curious. What is the purpose of the "finally" statement? There must be a good reason to use it that I'm just not getting... How is this: method1 { try { x; } catch { y; } finally { z; } } dif...more >>

Hi, I have a usercontrol that has the onload event. When I drag the usercontrol to form (add it to a form), the code get executed and throw exception. The code run fine on runtime, any idea how can I stop the code running at the VS IDE desgin time? Thanks, Tee ...more >>

I have a general question regarding this piece of code that I wrote. This works fine, however I am confused as to how I am able to pull the sb instance out at the end? When I create the XmlTextWriter class and pass it in sw (which in turn sw was created with sb) how is the sb object being ma...more >>

In my app I load a control into a Panel, and then I fetch a large amount of data from the database. I am trying to get the Control to display immediately instead of after the Fetch completes. So I added a control.Refresh() and control.Update() but none of that seemed to do the trick. So a...more >>

How do I put data from dataSet into comboBox? Hrcko ...more >>

I need to acquire a component (or application) to integrate into an online testing application. The component should be able to draw its content from SQL Server. Questions will be multiple choice and should have support for exclusive choices (radio buttons) or multiple choices (check boxes). It ...more >>

using System; namespace WindowsApplication1 { /// <summary> /// Summary description for Class1. /// </summary> /// public class Class1 { This string>>>>public string inVoiceNumber; public Class1() { } } } thanks, Trint ...more >>

It seems odd that a private instance member can be accessed by any other instance of its defining class. For example: class A { private int x = 1; public void func (A a) { Console.Out.WriteLine ( "private member = {0}", a.x); } } Rather than limit 'private' to an instance, C# ...more >>

Hi all, i have a string, str_old="E:\a\b\c.exe", and i want to change to str_new="E:\\a\\b\\c.exe". so now i use IndexOf() function to find the position of '\' , but it is throwing error that a new line constant is present. (i.e); int n=str_old.IndexOf('\'); //error here..new li...more >>

Hey all. I've seen something that confuses me a bit, and was wondering if someone could shed some light on the issue. I have an XML file as an embedded resource in a C# Windows Forms application. The File is taken directly from a file on the desktop. I load it into a stream... ...more >>

Every time I read about these things my brain gets muddled and I can't keep them straight. I'm going to give my guesses, could someone confirm or deny? I think a collection doesn't have to be ordered. But you do have to be able to use foreach(), and it will hit every object in the collection ...more >>

Hi, I'm working on medium size project in C#. The project involves working with an Access database through the Jet engine. I have almost completed the project and now i am doing some testing. I've noticed that when starting the application its memory load its rather small (around 30MB). Afte...more >>

hi my question is if i have a way to change the value of a cookie that i have created in the server with javascript in the client. ...more >>

Hello, I am building a win form TAPI application using C# The application loads a call control in a web form panel and also an AxWebBroswer control which loads a web page. Here is the bug: When I load the project, make an INCOMING call, and attempt to answer it, the entire applicat...more >>

I'm new to C# and have probably dump question - HOW I can use Windows API calls in the C# environment? Particually I need to read and write an .ini file. Thaks....more >>

last post sent prematurely. This didn't work. Compile error says I can't have instance field initializers in structs [StructLayout(LayoutKind.Sequential)] public struct cdVersionInfo { public int Size; public char[] = new char[32]; } Thanks in advance....more >>

I want to access a dll and one of the arguments is the following C struct: typedef struct { int Size; char chVersion[32]; /* version number. */ } cdVersionInfo; The chVersion parameter is returned by the dll function. How would I represent this struct in C#? I tried the following but ...more >>

Hi, how can I make my exe file open the already running instance of the program instead of starting up a new instance? I'm developing in C# with VS 2003 and ..NET 1.1 Regards, Trygve Lorentzen ...more >>

If I set an Xml documentation file in Configuration Properties | Build, a warning is put out for every non-private element in a public class in every file of my assembly when there is no Xml documentation for the element. Is there any way to turn off this warning on a file basis ? Occasionally...more >>

Good News! Do you know how simple it is to go to Heaven after this life has ended? Some people believe that belonging to a local church, temple, mosque or synagogue will get them to Heaven. Others believe that water baptism, obeying the ten commandments or just being a good person w...more >>

When application #1 opens, I would like it to trigger an event in application #2. How do you send a message from one window to another? How can application #1 look to see if application #2 is open, and if it is, notify application #2 that it has started? I know that using the win32 api t...more >>

Hi I have a combo which is bound to a datatable. I want to remove the record from the datatable, which the combo points to. Can anyone confirm the correct syntax.... I believe it will be something like datatable.Rows.Remove(.......??how do I find the row that is bound to the combo??); ...more >>

I need to upgrade asp files written in VBScript into C# ASP.NET. I found a tool from microsoft called ASP Migration Assistant but it only converted the asp files into VB.Net ASP.NET files. Is there a tool that will convert to C# ASP.NET? Any suggestions?...more >>

how come when i add two Int32 vars in a try catch statement with the value of 2147483647 it results in -2 instead of an exception?...more >>

Whenever I put a DataGrid onto an ASP page that has C# code-behind, the code-behind method for DataGrid_SelectionChanged() doesn't fire off unless I've double clicked the DataGrid in design view and had Visual Studio send me to the code. It's as if it doesn't realize that I've coded the metho...more >>

Does anyone knwo how I can bind a textbox to a single dataset/dataTable row? The following will give me only a Column: textBox1.DataBindings.Add(new System.Windows.Forms.Binding("Text", this.myDataTable, "TableNaam")) But in my program I need a textbox (that I can edit) directly bound t...more >>

I have an exam tomorrow that covers the perceived advantages and disadvantages of object oriented programming, in particular polymorphism, inheritance and encapsulation. I know the advantages but am not clear on the disadvantages. I have had a look on the Web and in newsgroups but couldn't find ...more >>

Hi everybody, Im currently converting an application from VB6 to C# which contains logic to convert EBCDIC to ASCII and vice versa. I have a test app which reads some previously stored EBCDIC from a text file and converts it. I have finally got it all working (Encoding.DEFAULT was the turning p...more >>

My MSMQ is in workgroup installation. I tried to add an event handler for the ReceiveCompleted event and to do It I try to use the SetPermissions. but I get an error of “A workgroup installation computer dose not support the operation” The code is: MessageQueue myQueue = new Messag...more >>

Hi, I have a small application that adds into a database, users. I have a textbox and a button, and when a user enters a name and click into the button i add into the database the username... For other hand i have in the same aspx page a list box. (i would like to use it to put each us...more >>

Hi, I am facing problem in retriving value of a registry key where the value is of type REG_QWORD. Below is the code snipet i am trying with: RegistryKey reg = Registry.CurrentUser; regKeyTools = reg.OpenSubKey(@"MynewKey\qword"); object val = regKeyTools.GetValue("qvalue"...more >>

Hi all, i was wondering if its possible to 'time' every single line of code then output the the results as in a profiler i.e. Time Line of code 22ms If... etc; 32ms i++; ..... .... i know you can time a loop or whatever through the Start -> do loop -> stop proceedure i.e ...more >>

Hello! I would like to know how exactly I should build event,handler to it and to deal with event occurence? (classes,function ,etc..) Thank you very much for your help....more >>