Hi. I have two threads and an event. The first thread registers a callback with the event. That callback plays with variables that only the first thread should touch. The second thread triggers the event. Is this thread-safe? If not, should I be doing thread synchronization (locking, etc...more >>

This is a report from VSS newsgroup in hope of getting some more = suggestions. Thanks, Po ------------------------------------------- I guess I am not getting the whole picture here. How does this apply to = the=20 condition when there is a cyclic reference for the binaries (dlls) in = ...more >>

Hi, Consider this: ArrayList al = new ArrayList(); FillList(al); /// NOW TWO SCENARIOS: /// 1. for (int i = 0 ; i < al.Count ; i++) {..do whatever..} /// 2. int iCount = al.Count; for (int i = 0 ; i < iCount ; i++) {..do whatever..} Yes, as you have already figured out my que...more >>

Hi all I want to judge an application is runing or not when another application start . If the application is running , get focus. I use the Pinvoke to invoke the FindWindow function ,I declared FindWindow function in assembly WindowsApplication3. If the WindowsApplication2 is running ,t...more >>

Hello, Using vs2005 and the new built-in Ftp functionality. I need to transfer a gigantic amount of data (15 GB) using my app. The current way is that I ZIP (or RAR) the data and transfer it to the server via FTP. Is there a more efficient way to transfer data? Does FTP go as fast as ...more >>

hi, i know it's not a C# question but i am developing a C# database application and would like to know what is the maximum characters' digits for the following: 1. Email Address 2. Windows XP computer name 3. Windows XP user name 4. Windows 2003 Active Directory user name 5. IP Address ...more >>

I keep getting the following error every time I compile the solution under VS 2005: ---------------- Error 5 Unable to copy file "obj\Debug\xyz.dll" to "bin\Debug\xyz.dll". The process cannot access the file 'bin\Debug\xyz.dll' because it is being used by another process. -------------...more >>

I can add a button to a TabPage, how come I can't add a Form? The Form never gets realized on the page, but a button can :-( f = new System.Windows.Forms.Form(); b = new Button(); b.Text = "Hello"; f.Text = "NEW"; f.Size = new Size(100, 100); f.Controls.Add(b); f.TopLevel = false; f.Doc...more >>

Assume I have an n by n matrix of identical objects, each of which can both invoke and consume event A. If, say, obect[1,2] invokes the event, the only other objects that need to consume it are those in row 1 and those in column 2. Sending the notification to other objects would be a waste of ...more >>

Hi, i'm try to build my own intelisense to some part of our system. Does anyone know where should i start from? or maybe can you refer me to a good reference or a open source code which can help me to start writing such control. What i'm trying to so is to enable my users to have the same ...more >>

If you have a function that basically creates an object/struct that holds data only in a function and wish to return the object/struct from the function which is faster a class object or struct? I would have thought class object since it can be passed back as an object reference instead of cop...more >>

I thought that the parse query feature in Query Analyzer simply wrapped your statement in a TRAN and then issued a ROLLBACK statement to prevent making real changes... but i just had a query parse successfully (ctrl-F5) and then fail on execution(F5), due to a lack of permissions on the object...more >>

Hi all, I want to have www.msdn.microsoft.com 's html code in a string ? What can i do to have it? Thanks. Omer...more >>

I am attempting to read all of the resources from a Win32 executable, and load each of them to display them on a screen. So, please help figure out why I can't seem to get it right :) First off, I have my API declarations (will post that at bottom). I make a call to LoadLibraryEx. Then, ...more >>

I'm using Visual Studio 2005 and I have built an msi using the built in setup project. My application installs fine, but on install the application itself runs a few configuration scripts which alter the original contents of the directory. The next time you start the application by click...more >>

I want to create a new value type for hiding the creation of Guid's that can be used in my business classes. I suppose I have to achieve this by creating a struct (ID) The problem is I'm completely stuck as how to develop my struct. Anyone can help? Thanks. e.g. class Person { ID P...more >>

Hi, I'm in the process of converting a production VS 2003 application to VS 2005. To simplify the conversion I'm converting a small piece at a time and then unit testing the code to confirm it converted correctly. The application consists of 10 seperate projects. I have hit a problem w...more >>

Hi, I am receiving this exception Error 3 Cannot apply indexing with [] to an expression of type 'System.Collections.Generic.IEnumerable<VisualSystems.DbObjects.DbClasses.DbColumn>' C:\Visual Studio\PROJECTS\VisualSystems.DbObjects.DbClasses\DbObjectTable.cs 51 30 VisualSystems.DbObjects.Db...more >>

How can I set the row cursor(on the row header) position by C# app? The DataGrid.Select() method can't do it! ...more >>

Hi, I'm able to make connection to a server using socket connection. However, when I send a command string the server just ignores it. All command string needs to start with "0xF9" at Byte 0. During the run-time debug, I see it to be "u" with a "~" on top of it. Is that OxF9? Can someon...more >>

Hi all, I've been trying to update the font style in a RichTextBox using FontDialog. But when I use this method (Rather than change each attribute individually) all the text in the RTB changes to the new font. Is there any way to just make the selected text change or the text from that poin...more >>

I have a home grown bit vector and I keep oscillating between what I use access individual bits. For example, is is better to do this: const int BIT_1 = 1; const int BIT_2 = 2; .... int my_bits; // Set bit 1 my_bits |= BIT_1; Or, should I create an enum enum BitPos { Bit...more >>

Hi, In our C# Windows Form application, we are using the SQL Server 2000 as the database server. The Database table MyTable has a field RegistrationDate which represents the Date a client comes to our company to deliver his product. We have some Working days for processing his product, li...more >>

I need to do a Report using Crystal where: Given a number in a field x. Ej. 150 I need to print it in a report that has 4 columns where each value in the field must be located in the correspondant column according to the number (0> and <100) (>101 and <200) (>201 and <300) (>301 an...more >>

I'm converting a Delphi app to C#. The application uploads and downloads files to an image field on SQL through a webservice. With Delphi, this was done straight to SQL instead of a webservice. The C# code works fine in both directions except in the case of zip files. I get a message, from Win...more >>

Hi All, Is there an equivalent html control or asp control in .NET that does the following - <ul> <li>list item1</li> <li>list item2</li> <li>list item3</li> </ul> Thanks for any tip! ...more >>

An unhandled exception of type 'System.Runtime.InteropServices.COMException' occurred in mscorlib.dll Additional information: The RPC server is unavailable. See the code below and help me out to solve this problem. public static void Main(string[] args) { string strvalue; Cons...more >>

The following code will create memory leaks!!! using System; using System.Diagnostics; using System.Data; using System.Data.SqlClient; namespace MemoryLeak { public class RGCSqlConnection:System.IDisposable { SqlConnection m_connSQL; public RGCSqlConnection(string dbName, str...more >>

The controls in my form are bounded to a datasource, including textboxes, comboboxes, etc... Something lame happens: In runtime, the last focused control before clicking on my save button, doesn't have its datasource bounded value refreshed with the new data inputed. I think the control's Lo...more >>

Using Shell32.FolderItem's IsBrowsable I find, for example, that Internet Explorer and Printers and Faxes are browsable. I studied Help to find the definition of Browsable but could not find it. Can you tell me what Browserable means? Thanks in advance ...more >>

Hello, I'm looking for a C# Preprocessor (shareware with source, if possible) which has the functionality of preprocessors which already exist in other languages, e.g. http://www.zeitungsjunge.de/delphi/dipp/ DIPP is a Pascal Preprocessor. The purpose of DIPP is to manipulate Pascal sour...more >>

How to know when the frames in AVI file is RGB or BGR because sometimes Red appears first and sometimes Blue appears first in uncompressed frames. Does *anyone* know why? ...more >>

Hi, I'm currently rewriting some functionality which was using multithredaing for retrieving datasets from database and updating a grid control. I found that the grids (Infragistics UltraGrid, though it doesn't matter) were updated (i.e. grid.DataSource = dsDataSet;) and used for differen...more >>

Hello! As part of a refactoring iteration, I was looking at consolidating two properties (Start and EndDate) to a single structure that would allow a single access point for the "duration" (so to speak). I considered using the TimeSpan, but that structure doesn't provide the boundaries f...more >>