How to add MSComm Control in #develop MSComm COM/OCX control. ...more >>

Hi, How can i capture the mouse move event of my window form when i move it ebove other control? Thanks! ...more >>

I have a setup Project which consists of 7 services. I have created it using Setup and Deployment Project. I have not used installer class. The Problem is that when I select service for custom installation service gets installed depending on the selection of user using checkbox. But when I un...more >>

Is there a way to get the type information for the class an attribute is defined on at runtime? I tried getting the attribute type, and then checking the DeclaringType property but it was null. Example: [Cool] public class Test {} [AttributeUsage(AttributeTargets.Class)] public class ...more >>

Hi, I want to create an Hashtable in C# and pass an pointer to the hashtable to a C code. Later, the C code could reference the hashtable by passing the pointer to the hashtable as a ref parameter. what is the correct way to do this? Thanks, ...more >>

hi, Is there a way to obtain a filesystem lock on an entire directory (exclusive access so that no files are added, changed or deleted while the lock is en force). Thanks. ...more >>

Dear All, I have a .htm file, and my question is how should I code if I want to print this htm file to the printer !! Thanks !! Paul ...more >>

Could you tell me where can I find a good tutorial for reporting services? Thank you ...more >>

Hey there all, Fairly easy question for a C# expert, i assume! Am still working on my Photo Album. On frmBrowsePhotos, i have a listBox (photosList) containing photoID's from a table in an Access Database. I click 'Add Photo' on that form and after the OpenFileDialog (etc.), it asks me t...more >>

Hi all! I'm working on a little app for browsing image files. Now I want to make a database support for thumbnails in a way to store a thumbnail image and image properties in a db. This way browsing will be faster since I'll be able to load a thumbnail image from database, and not wasting tim...more >>

Hi, A simple question .. In the design mode I added the standard File Menu, so, New, Open, Save etc. to my Window Form application. On File Exit, I added code like: private void FileExit_clicked(object sender, EventArgs e) { this.Close(); } but nothing happened. The form does ...more >>

I am using the no-arg ShowDialog() method hoping that the window would not be modal to any other window like the other ShowDialog(IWin32Window) method does, but when this opens it somehow becomes modal to my main window- even though I don't see how it could even be getting a reference to my ma...more >>

Hello, Is there a way to receive a notification when an internet connection becomes available and when it becomes unavailable? Thanks. ...more >>

I want to expand a tree view in a way that only shows the first chiled,I don't want it to go deeper than one level?? Is here somebody who can help me? Thanks for your time. ...more >>

I am coding a managed C# wrapper for an unmanaged C DLL and I am unable to marshal a structure that contains an array of structures. When executed, the following code throws an ArgumentException with a description “Type ErrorInjectionBuffer can not be marshaled as an unmanaged structure; no...more >>

Hi I have the following code and why can't i change the value of myvar in the DataGrid1_editcommand event so that the (changed) value of myvar is there in the Update event?? (it fires i debugged it!): namespace MYproject { using System; using System.Data; using System.Drawing; ...more >>

Hi All, Why when I use "\n" in a textbox ,a square is shown (however the new line is applied)? Thanks for your help. Ray ...more >>

Can i validate a TextBox with a regular expression without using RegularExpressionValidator? Can i use a function to do this? I wan't to throw an error different from the way RegularExpressionValidator does. thanks, Gonçalo Boléo ...more >>

This may be more of a Visual Studio question than a C# question, but it came up within the context of a C# app, so here it is. In a Windows Form or a Web Form application, you can drag various DataAdapters and create DataSets bound to them so everything is strongly typed - a very nice featu...more >>

Hello, Can someone please tell me how I can connect to the Internet and/or disconnect from it using C#.NET ? I just want to open this window in order to connect: http://www.neowin.net/forum/uploads/post-62656-1105376475.png and to know how to disconnect. Thanks in advance :) *---------...more >>

Hi, I don't know if this is the correct newsgroup to post this question, but here goes. I have installed Visual Studio .Net Professional 2003. I checked the version and it is 7.1.3088. It says in the books that I have read, that this version already has namespace for oracle db connecti...more >>

Hi there, I am trying to get some conditional functionality into some of my apps. I can use the format : [Conditional("DEBUG")] private void doStuff() { //do something } as expected, but I would like to makr it a little more useful in a multi-machine environment. I want to ma...more >>

Hi All, I need some help in adding the OledbDataAdapter Insert Command Parameter. I have two datasets. 1. SourceDataset 2. DestinationDataset I need to copy rows from the Source into the Destination Table. I am using the Insert Command. The confusing part is setting up the Source ...more >>

Hello all: What is the best way to get a reference to an item selected in a data grid? What I am trying to do is have it so a user can select from a list in a data grid of all our employees and then click a button to update that employees details. What is the best way to accomplish this ...more >>

I'm using TcpClient in blocking mode with NetworkStreams and would like to be able to give notification that data was sent - I presume this must be possible? But anyone know how?...more >>

I am using : SystemDate= System.DateTime.Now.Year.ToString() +System.DateTime.Now.Month.ToString()+System.DateTime.Now.Day.ToString(); strbRetVal.AppendFormat("{0}{1}",SystemDate,m_chFieldDelimiter); but this gives me : 200517 I want the date to look like: 20050107 How can I do t...more >>

Hi, I like the C# implemention of singleton class presented at MSDN. My question is that is it correct or right thing to do to modify that class to make the class will return the same instance if for the same parameter when calling GetInstance? public static Singleton GetInstance(string ...more >>

Hi there, What would be the counterpart for Java's StringTokenizer class in .NET? In fact, does anybody know a good web site that gives this kind of information, like a Java-.NET/.NET-Java dictionary or equivalency table? Many thanks, -- Carlitos...more >>

Would you please tell me that some C# WebForm application (VS.NET 2002) can run/call windows executable file such as notepad.exe (use Process.Start)? if so how to do it. Jiang ...more >>

I have a question pertaining to the implementation of an interface's contract, specifically why in some interfaces the InterfaceName.method is required when other times just the Interfaces method name will work. For example, When using ICollection.CopyTo Method I can implement the CopyTo ...more >>

Hi, In a running C# app with a datagrid control I select all rows in the dataGrid using CTRL-A, I then paste into some other app like notepad or Word but the column headings get left off. Is there any way of including column headings when copying/pasting from a running datagrid to notepa...more >>

Hi, Here's what I want to do: 1. Start the application. 2. A SplashScreen running in its own thread is started. 3. I'm checking if the application needs an update. 4. If an update is needed I close the SplashScreen and copy the file. 5. Restart the application. My problem is happening a...more >>

Hello, in the browser it's possible to ask for the source code (right mouse button and menu source code). That source is generated by asp.net. It contains a lot of whitespace. Is it possible to switch off that whitespace with some setting in VisStudio(C#)? Thanks Frank ...more >>

Hi All I would like to pass the following sqlStatemet to Crystal Reports, as the statemet to retrieve records : SELECT Emp_Name,Emp_Surname,Emp_Number FROM Employees WHERE Emp_ID = @Emp_ID The Emp_ID is chosen from a combo box on the form that has my crystal viewer control on it. ...more >>

I know that there is no Crystal Newsgroup, but could someone please show me how to populate my crystal report from within my C# Application, by passing an SQL Statement with parameters as a report source, if this is possible Thanks Christopher ...more >>

I created 2 objects from a custom collection class. IntCollection a = new IntCollection(); IntCollection b = new IntCollection(); a.FromInt32Array(someIntArray); b = a; However when ever I attempt to remove items from the object a, somehow b will be affected. Is there a reason why this is...more >>

Hi, I'm trying to get a list of Users or Computers currently logged into a domain? Thanks Mel ...more >>

Hi, What is the most easy way to check on EOF while reading a binary file with all integers ? In lot of examples the read data are first stored in a string, and afterwards the string is checked on *null* value, but that does not work for binary files. Like this ... string buf; while ( ...more >>

Hi, I am still confused the different between ProcessCmdKey and ProcessDialogKey. When to use it? I write a simple user control and these 2 override functions looks the same to me. protected override bool ProcessCmdKey(ref Message msg, Keys keyData) { const int WM_KEYDOWN = 0x100; c...more >>

I created a control array at runtime using the following code. I also wanted to code the controlarray click event. My code can respond to click event but cannot identify the specific control clicked on, which is important to my application. Appreciate your help. Frank ---------------...more >>

Does anyone know of a C#/ASP.NET Open File dialog that I can use in an aspx page that allows multiselect? I need to be able to select and upload numerous files. Is there a reason why MS has made this so difficult? I am willing to pay for such a control. ...more >>

Hi, Quick overview of the problem: public bool Something( out DataSet ds ) { bool ret=false; try { xmlDocument myXmlDoc = new xmlDocument( myFile.xml ); ds = myXmlDoc.DataSet; ret=true; } catch( Exception e ) { //Do something } ...more >>

Hello, Is it possible to adjust the scroll bar to move until there is data on the form? Thanks!...more >>

In order to do some UI animation or drawings can I use a Graphics object in a WEB Forms project (in VisualStudio.NET) -- Renato /*Portugal*/ Vieira...more >>

Hello got such proble (easy I think:( ) i declare variable: private int[] var1 = new int[10]; how to write property for this variable? ...more >>

Hi I have a problem with fully qualified names. According to the C# language specification: "Every namespace and type has a fully qualified name, which uniquely identifies the namespace or type amongst all others." However, I have problems compiling the following: namespace Foo.System....more >>