I'm trying to dynamically build the example script below from C#, substituting the sale item details with data values I get from an online transaction. Is there a preferred method to do this? My approach so far has been to concatenate a bunch of strings, then plug it into a ClientScript.Register...more >>

how do I get that template for Windows Control Library project? I am using 2008 c# express . I can see for new project I can choose windows application class library wpf application wpf browser application console application empty project then there the other "s...more >>

If I press Windows+R key in Windows and type some letters, Autocomplete list shows possible choices. I want to implement similar thing in winforms application: when I type first letters from customer name,autocomplete list for customers starting with this same should apper. Since there a l...more >>

I got me a DB called "deebee.sdf" and by DataContext db = new DataContext (@"C:\deebee.sdf"); i create connection to it. In there a table called "tabula" resides. Now, the problem is that i can't get any info from it. I've tried to follow the tutorial on MS' site by var query =...more >>

hey all, Label[] lbls = {Label1, Label2, Label3}; i know you can iterate thru the elements, cast to Label object, and then set its visibility. But is there a way to set the elements all at once without loop structures? just wondering. thanks, rodchar...more >>

Hi, I'm trying to use Mysql with Enterprise Library but i have a problem with somes methods becouse EntLib understand that mysql is a generic database. I am trying use Custom Provider Mapping with Mysql but I have not idea how? Anybody has an example of these? Thanks for all and sorry for my...more >>

In a rather long email-conversation with Jon Skeet, I accidently wrote a one-liner, that I'd like to share it with you. "I don't think I have ever been in a conversation with you, without learning something new =)" Tru dat - Michael Starberg ...more >>

Can someone help me understand the perils and merits of anonymous classes in C# 3.0? Would anonymous classes be most useful when used with reflection? I cannot figure out how else I would pass them to a function. How useful is a type if we never pass its instances to a function? If we d...more >>

Whenever I type some url like http://youtube.com/watch/v/54GRe3ox_xI in firefox browser when the address is immediately redirected to http://youtube.com/swf/l.swf?video_id=54GRe3ox_xI&rel=1&eurl=&iurl=http%3A//i.ytimg.com/vi/54GRe3ox_xI/default.jpg&t=OEgsToPDskJ98NGh0lWiWIogmOD9369L Is t...more >>

Hi, I created a new Crystal Report on my .Net 2.0 C# web project. However, I have encountered trouble in the Database Expert from the default Crystal Report editor in the .Net. That is in my project I have a DataSet MyDS, but I found no data columns in the ADO.Net Dataset from the Database ...more >>

The program below works when compiling it with VS2008. However, when I try to compile it from the command line I get this error: props.cs(38,53): error CS0246: The type or namespace name 'List' could not be found (are you missing a using directive or an assembly reference?) props.cs(38,66)...more >>

Previously I could write (supported) ActiveX controls for IE only. Has this changed with VS2008? Does office support ActiveX controls written in VS2008? What about older versions of office: will they support controls written in VS2008? Thanks, Siegfried...more >>

Hi, I want to use an array as a little table. I don't know how to declare this in C# and I also don't know how to find a record in the array (based on id field). Hope somebody can help me. Here is the array/table structure I'm looking for. id, name, address value, value, value value, valu...more >>

I have the following in c# VS 2005. fn.ProjectTableID = dbReader["ProjectTableID"] == DBNull.Value ? null : (int?)dbReader["ProjectTableID"]; This works fine as long as dbReader["ProjectTableID"] is null. If it is a value I get an error: Specified cast is not valid. Why is that? H...more >>

Hi All, We are in the process of review and redesign large scale .Net 2.0 web application. It has been suggested that we can use SmartClient instead. Can anyone provide resources/whitepapers on SmartClient vs Web Application? Thanks, Wenlei ...more >>

I have a complex "query" object that I need to save to a table and then restore. Everything works great with the following exception. When I try to create a method within the object called Restore() and try to restore the object onto itself I can't: Here's the code segment: byt...more >>

I'm trying to connect to a DB and retrieve some data. The DB is a file called deebee.sdf. Now, i have the following relevant lines in the code. using System.Data; using System.Linq; ... DataContext db = new DataContext (@"C:\deebbee.sdf"); THe compiler doesn't like it an...more >>

Why in thet case "throw" doesn't work? There is no exception rising and there should be! public class Aaa { public static void Main() { try { Bbb bbb = new Bbb(); bbb.ShowDialog(); } catch(Exception e) { ...more >>

How can i open a form from another form in the same window? Like when i install a program and i press next,next... Thanks!!!!...more >>

I have installed this InpOut32.dll for programming the parr.port and I have tested the installation with the included testprogram and it works fine. Now I will try my own program - and I add only ONE statement - just to try - but I get an exception. When I'm commenting the statement out - ...more >>

I have a C# app that must use a C# class library, which in turn references an unmanaged C++ DLL. My code interacts briefly with the C# class library, after which my code must fully release it, retaining no references to either the class library or the DLL (which the class library uses via DllIm...more >>

Hi all, C# How could I sum, the top 4 values of a bunch of values THanks RObert ...more >>

I'm looking for help solving a particular quirk in Petzold's TreeView example. (ref. "Programming Microsoft Windows Forms - A Streamlined Approach Using c# - 2005 Edition", pp. 85,86). The observed problem: Collapsing a parent node that has two or more child levels exposed results in the "...more >>

Using VS 2005, I have list that I want to sort that has a nullable field. I am getting an error: 'System.Nullable<int>' does not contain a definition for 'CompareTo' I am getting an error on the "secondInstance test for ProjectTableID, which is a nullable int (int?). public cla...more >>

Suppose I have the following class which maps to a table: [Table] public class People { [Column( IsDbGenerated = true, IsPrimaryKey = true )] public int PersonId { get; set; } [Column] public string FirstName { get; set; } [Column] public string LastName { get; set; } [Colum...more >>

Hello all, please I need help with an a web app that I am developing. I am using .NET 2.0, VS 2005, IIS 6.0, Windows Server 2003 Standard Edition sp2 The application was deployed our server in my country and it was accessible over the internet from our clients. Later due to QOS issues, we ...more >>

I would like to learn wmi with c#. There are tons of stuff out there on the subject, I am just starting learn c# and Wmi. Is there a site that anyone would recommend for someone who is just starting. Thanks Freddy...more >>

I'm new to C#, and I have a question. For my program, I have 2 forms: one to allow the user to pick a property and another to allow the user to edit the property. They select the property they want to edit from a TreeView. Example: string m_szCurrentPath; object m_oCurrentTarget; p...more >>

I'm wrestling with the best way to create some C# code to find all of the unique email id strings I receive within an array. Basically I want to efficiently eliminate all of the duplicates. Typically there will be between 1 and a few hundred unique email ids, and worse case it might be 20,000 ...more >>

Hello: I was hoping to write a method that returned a T? for value types and a T for reference types. I assumed that I could overload a generic method based on the constraint of class or struct. The intention was to return null for any type, using Nullable<T> for value types and plain null ...more >>

Dear all, We try to access a third party Matlab dll (which was created using Matlab COM Builder) from C#. It works fine when using strings and one-dimensional arrays but fails with two-dimensional arrays. We give our example of the code below: static void TestBasicStat() { ...more >>

hi all, i have made windows service and its working fine. but i want that multiple instaces of that application should run. The problem is that each windows service will have its own configuration file,supplied by the front end of service. i have tried to make the seperate installers of t...more >>

Hi folks. First up, sorry for sporting html, but I want the code to be nice below. I typically educate/demo LINQ/.NET 3.5 and C# 3.0 to all who wants to = know. At work that is for our coders, and for our customers; well.. they = are curious... and pays for it. My style is to sit at my lapt...more >>

Hi, I have a form with TabControl and a TabPage in it. In the tag control there is panel control (lets call it panelA) and in it my user control that include few control inside of it. In my development computer everything looks fine. But on some other computers, the panelA control is over...more >>

Since we are currently on the subject of multi-threading in a different thread, I have a question about delegates. When I use delegates, I just create one for each different parameter set that I need. For example: delegate void callBackString(string d_string); delegat...more >>

Hi everybody! I have question about setting decimal symbols... In some countries, for example in my country we use comma for decimal symbol, but in in some other countries it is decimal point. The problem is when I use comma and want to save data in database. For example if i want to save num...more >>

I am happily developing software with C# using Visual Studio 2005. Should I upgrade to Visual Studio 2008? If I do, will I be able to work on the same project alternately with the two different Visual Studio versions? ...more >>