hi I would like to know whats better--- To declare a SQLConnection variable as a Static member of a Class containing functions to MakeConnection and CloseConnection, or should I just declare it as a Public member of the above mentioned class containing Connection code. I ask this because...more >>

I have a DataGrid control on a form and I used the Auto Format feature = to format the grid. The problem is now if I resize a column in my code I loose some of the = formats - some of the grid colors returns to default values. Here is = the code that I use to resize a column. ...more >>

Hi All, When the user right clicks on the desktop or selects a file and right clicks the mouse he should see our own submenu along with the Windows context menu. How will I do this in Visual C# ? Any suggestions please? Thanks for your time Regards Anand Ganesh ...more >>

When you right click on file and select properties option, some files have "Summary" tab. Using ApplicationInfo.cs file we can set "Company","Language","Version" etc.. which appeares under Version tab. But how can I set "Author","Category","Title","Subject",e.t.c from AssemblyInfo.cs file whic...more >>

I was looking for my stashed away copy of Thinking in CSharp by Bruce Eckel which I have downloaded long time ago. Sadly it is gone due to my PC harddisk reorganisation. And the author website does not help since last status I heard was there were some legal complications that had to be sorted o...more >>

how wold be a regular expression to pick links from a page ???? []s... ...more >>

Hello Friends Please check the code below. One in C# and other in VB .Net In C# I am not able to access a static property by an instance variable, but in VB I can do it easily. The Error is Static member 'ClassInCS.ABC.MyInt' cannot be accessed with an instance reference; qualify it wi...more >>

Hi, Could someone please tell me how to block the Alt button from being used? And how to unblock it again when exiting the application? Many thanks, Patrick ...more >>

I was wondering if there is a way to change the value of a control without triggering an event. The ComboBox control, for example, will trigger the SelectedIndexChanged event when its SelectedIndex property is changed. I would like to change the SelectedIndex property without triggering an event...more >>

Hi... I am trying to do a "basic" ODBC connection to my MYSQL Database being hosted at discountasp. For the life of me, I can't get anything to return... could someone lend a hand? Here is my code: -------------------------------- string MyConString = "DRIVER={MySQL ODBC 3.51 Driver};" + ...more >>

Hi Everyone, I've spent hours investigating why my Async (one way) call wasn't invoking the method on my server. Basically, if I remove " Console.ReadLine() ", the method DOESN'T get invoked. Can anyone tell me why? Does the call require a pause? (ErrorInformation is a serializable struc...more >>

This is probably more of an ASP.Net situation rather than c#, but since all of my code behind is in c#, maybe it fits here. I'm wondering, generally, at what point is it too inefficient to store information in a client cookie rather than retrieve it from a datastore. Now, I see the advan...more >>

Hi, Maybe somebody knows why it's happening? I wrote a C# Windows Application working with the remote database through a DataSet. It works cool from my computer but when I gave this application to my friend who (and only him) has to work with the database tables to edit them he began receiv...more >>

How to create a class dynamicaly at run-time? Some documentations in MSDN say that it is feasible using the class "TypeBuilder",but I don't know how to do. Is there anyone who can help me? Sample code is appreciated. ...more >>

I'm working on a WINDOWS application. I created a configuration file with the name of "MyProjectName.exe.config". I loaded the following configuration information into the file: <?xml version="1.0" encoding="utf-8" ?> <configuration> <appSettings> <add key="ConnectStr" value="MyConnect...more >>

Hello, I'm looking for the C# equivalent of App.Path (that is the application path in Visual Basic). I think it is System.Security.Policy.ApplicationDirectory.Directory, but when I use this the compiler says: "An object reference is required for the nonstatic field, method, or property ...more >>

Hi, maybe some of you can give me a hand with this, I have a dll written in VB 6 but i havent the source code of it. In Visual Basic 6 this dll instanciates with createobject and the method was accesed in this way: mydll.method "1", "2", "3", True Now in Asp.net when i add the reference and...more >>

I'm just curious, why did give VB.Net a Friend keyword but not C#?...more >>

I am currently in a black hole looking for a way accessing the creator object of a class within the class. Something like parent of winform controls. Thanks for you time Max ...more >>

Using Dataview as a datasource for datagrid works fine while viewing. When I make a new row, by calling dataview.AddNew(), it removes all the rows in the grid. Anyone know whats going on? In any case how would you bind two different grids to the same table, can we filter the rows in the grid? ...more >>

Hi everyone, We can not set an integer value as null, since it's a value type. We want to insert this integer value to a DataTable which has an integer column. (And then update the database..) How can we achieve to write null to the dataTable or at least to database? Thanks, ...more >>

I'm having a problem getting the name of my card readers using winscard. The same function works in vb6, but I think I must be missing something here. Anybody see what I'm doing wrong? Following are my calls to the imports and my values (only the relevent stuff) SCardEstablishContext works ...more >>

I'm learning C sharp and do not like vb much. I'm creatiing a wepage using panel to test myself. I tried to use these code below, which is written in VB, and to transform them to c sharp but I got hard time to understand vb syntax. I don't know if anyone in here can point out which is the equival...more >>

If I want to access a column, I am not quite sure how you do this when you are "drilling" from the DataSet, say for example... ds.Tables["Skaters"].Rows[0] So I can access the "1st" row, but how to get to the column information? The only way I know to get at the column infomation is to cr...more >>

Is there an equivelent in C# to this "Case 0 to 1.5"? Thanks ...more >>

Having some problems with setting my RowViewFilter when I am looking for a column with Null Values. I have tried the following: dvAddSkaters_Lstv.RowFilter= string.Format("(DateJoined = '{0}')",System.DBNull.Value.ToString()) This is obviously wrong, as when I look at it in the editor th...more >>

I am creating a custom user control and I am having problems with setting the transparent color of the bitmap. Here is my code... protected override void OnPaint( PaintEventArgs e ) { System.Drawing.Imaging.ImageAttributes imageAttributes = new System.Drawing.Imaging.ImageAttributes(); ...more >>

Is there an article that does side by side compareson of major differences between the two languages? Also, .NET and J2EE? Thanks, Alex. ...more >>

Hi I want to be able to customies (using a different brush) the background of a Windows.Forms.Button. How can I do it? If I derive and override then there is no paint method that I can set the brush. Which way can I do this? Thanks ...more >>

Hi , I'm working with C#.NET and I'm looking for the following. I have a web page content and I want to pull all the text which appear in the page without all the HTML tags. I know that there is a way to do it with regular expression. Does someone know how to do it ? Please help…. T...more >>

I have multiple user controls (.ascx) on a page (.aspx). How can a user control interact with each other? Also, how can a user control interact with the page? TIA, Douglas ...more >>

Anyone know of one? Best book i've read so far is Simon Robinson's Wrox Professional C# book but the ASP.NET chapter is weak, i'm looking for something more detailed, any suggestions? jax...more >>

Hello, Can someone please tell me how to set the bar color of a progressbar to another color. You'd think there would be a simple progressBar1.ForeColor method...but I guess that's too simple and easy. Thanks for any help... :) ...more >>

Hi all! I know this post is kinda silly, but I'm just curious... How can you build a database connection string using an excel file to get your data? Thanks a million! Ann ...more >>

How do I capture what parameters were passed to my Windows service application?...more >>

Hello, Where can I find good help file (*.hlp) or (*.chm) for windows api functions (95 thrugh xp) ? Thanks :) ...more >>

There's something for me to learn with this example, i'm sure :) Given this text: "[Contact].[Region].[All ContactRegion].[ASIA PACIFIC].[Japan].[Japan]" and my first attempt at capture the groups: "(?:\[)(.+?)(?:\])" RegExTest gives me what i expect: 6 captured groups: Contact, Region, ...more >>

Hi, Is there any way to add a new user to local admin group via C#? Please advice, thanks! -CL...more >>

Hi Everyone- I would like to implement the IFormatter class to create a custom formatter that essentially does exactly what the System.Xml.Serialization.XmlSerializer does, but also would allow for the functionality of ISerializable (GetObjectData, and De-Serialization Constructor) so that I ...more >>

Hi, How I can get information from printer about count of copy pages, who's print pages etc. I want monitoring printers and save that information to file log. Maybe printer has any events to do that ? Thank's for all. Boniek ...more >>

In VB, I can write the following code to get the list of users and groups in the domain ASIA. How do I do the same in C# Set objContainer = GetObject("WinNT://ASIA") objContainer.Filter = Array("user", "group") For Each user In objContainer List1.AddItem user.Name Ne...more >>

I have a general question. If I write a application using any language(C/C++/C#/VB). How to make sure it only has one instance running? What I need to write in source code? If multi-instances run. Is any data confilct exsisted? Assuming I put the .exe in shared network drive and the multi...more >>

is it possible to put something in the pageload event to stop the page rendering the rest of the page. or to tell the browser to execute the html that it already has instead of wating until the page has finished loading? ...more >>

If an object of class A adds an event handler to and object of class B, and class A is finalized, does the handler delegate get removed from class B's event handler or is there a bad pointer on class B's event handler? In other words, do I have to put a destructor in class A to remove its event ...more >>

How would you use iphlpapi.lib (from the platform sdk) from a c# app? I can use iphlpapi.dll on w23 and xp, but seem to need this "lib" from w2k. If need to wrap in c++ dll, please poing to example. Also, would you need to distribute lib seperatly with you app, or would it compile "into" one c...more >>

Hello, I am trying to help a co-worker of mine with a C# problem. The following code will not render at all in the IE 5.5 browser we are using: ******************************************************** <html> <head> </head> <body> <form method= "post" runat="server"> <asp:Label i...more >>

Hello, I am using VS 2003: 1. In VS 6 there was a "Run to cursor" choice in the debugging menu. It was also done using Ctrl+F10. How do you do this in VS 2003? 2. Back in the days of the Wordstar page editor (now you know I'm old) there was a way to jump back and forth between th...more >>

In another online group in which I participate, we were discussing a particular piece of code that had a pretty high risk for breaking in the future (because it depended on something not changing that was outside the developer's control) but was slightly more performant. One participant posted:...more >>

I have developed a web app using DPAPI to encrypt a connection string in the web.config file. The application works perfectly on the development machine but when deployed to the server when opening the app the following wrror is generated: Exception decrypting. Decryption failed. Key not...more >>

How do you call a DOS command from .NET? Specifically the SORT method in DOS....more >>

Hi all, I'm having this strange problem where, in a web app, I have 2 different links to a different form. One is just a straight forward link the other is a bit more complicated because it gets there from a user control I wrote to display a menu. However both call the page in the same way usi...more >>

What we've done so far in our web applications: 1. We have no datasets dragged-and-dropped in Visual Studio. They are all defined in the code, generated at runtime. 2. when a user updates or hits a 'delete' button next to a row in a datagrid, we call a webservice. In there, we coded insert,...more >>

I have created a web application that uses a custom control and a web service on my local system. I have gotten all of the bugs worked out on my local system and now it is time to move it to the sever. I have tried copying all of the files and folders within my application folder. I have even tr...more >>

Hello- I am a little confused about something. I have create a .cs file that looks like this: using System; namespace MyApp.Types { using INT = System.Int32; } In my Main() function, even though I have added the using sirective : using Types; I get compiler errors with this line of...more >>

I have a couple of questions regarding C# strings. 1) Sometimes I see a string in someone else's code like: string foo = @"bar"; What does the '@' do for you? 2) Is there a performance loss if I start concatenating strings together with the + operator ? In Java, they discouraged code...more >>

What do I have to do to get System.ServiceProcess.ServiceController.ExecuteCommand(int) to work? I have written a service that overrides OnCustomCommand to handle commands sent to it. If I have application code like: ---------------------------------------------------------- ServiceC...more >>

is there a method to do assemblies with visual studio .net or i need to build a makefile all by myself??? ...more >>

I would like to develop a C# Windows Service Application that monitors a directory for new files. When a new file is detected, then I would like it to run an SQL Job. Is there a command I can use with C# that would accomplish this? Thank you for your help....more >>

this refers to the knowledgebase article: http://support.microsoft.com/default.aspx?scid=kb;EN-US;308343&FR=1 I can't get this sample to work... It will compile but when the console window opens i get an exception: An unhandled exception of type 'System.Xml.XmlException' occurred in syste...more >>

I have a API function which declared in VC++ like this: DLLimport BOOL WINAPI bl_HERA16_SetPlayBuffer(int iChannel,BYTE **bpBuffer); How could I declare and call this function in C#. I have problem on second parameter. Thks...more >>

I am currently developing an application, which receives=20 Assembly objects from the network. I would like to load=20 these assemblies dynamically in the application.=20 I looked the informations about the Load and=20 LoadWithPartialName methods. If I have well understood,=20 these methods loo...more >>

My application contains several Classes & Forms . From the Login form I will get the User ID and Password for the SqlConnection. I established the connection through another class and I can get it in the Login form. In another form , say Employee form , I want to save the Empl...more >>

Hi All, I have a serious issue regarding classes scope and visibility. In my application, i have a class name "TextFile", and also a few other classes like "TotalWords", "TotalLines" and etc.., which are suppose to describe the structure of my main TextFile class. Also i have created some...more >>

I need to have each row of a datagrid to have a different height based on the data. When debugging, I can change this value ((System.Windows.Forms.DataGrid)(m_MyGrid)).DataGridRows[0].Height and achieve what I need to do. Apparently, this is a private member because I don't have access to it. Is...more >>

Say if i have a function, void FuncStart() { try { FuncDoActions(); //<nextlineofcode> } catch(ThreadAbortException) { Thread.ResetAbort(); } } If I start a thread by calling System.Threading.Thread mythread = new System.Threading.Thread(new System.Threadi...more >>

Hello! I'm back again with another problem. First of all, thank you to Jacob for helping me understand a bit more about NNTP commands. So now the problem: I have a collection of potentially thousands of items. I would like to load this collection and populate it in a Windows.Forms....more >>

I want to disable individual items in a listbox or listview...more >>

hi how to disable elements in listbox or listview in C#.if i select one item the remaining must be disabled...more >>

Custom control problem. I'm modding a textbox so that it will always have a "%" sign at the end of it. I have overrided the Text property to account for the "%" value within the textbox and have add BaseText to give access to the baseText method too. I have the text_changed event handler wi...more >>

Hi, Is there a possibilty in c# to create a record make up for example of an Integer, string & char Thanks Ivan Sammut...more >>

I have .NET Frame projects that can be downloaded from the Web in setup.exe files. These files are less than a megabyte in size. They are demos for clients. If the user's computer doesn't have .NET Framework installed, he runs dotnetfx.exe. This is a 25-MByte file. Although it can be redis...more >>

Using udp sockets inside a class called by ASP.NET By impersonating you can use a TCP socket from a external class and call it from a ASP.NET page. However, changing the socket type to UDP and binding it to a port throws an error "An attempt was made to access a socket in a way forbidden by i...more >>

Hello, I have a hebrew string that include numbers and other letters, i need to revere only the hebrew fonts. somebody told me using the bidi. please help me....more >>