I am new to C# and I am writing a small Windows app that consists of a Label and Button. I've written code that displays the following in the Label: ---- ---- 2004 $1,200.00 2005 $1,260.00 2006 $1,323.00 2007 $1,389.15 2008 $1,458.61 2009 $1,531.54 ...more >>

How long is the MCSD for the 1.1 framework going to be good for? The MCPD for the 2.0 framework is now available and I wasn't sure if the MCSD will drop off at some point. I can't find a reference to this on Microsoft's website. I'm assuming what ever time frame applies to the MCSD will also...more >>

I am writing an application in C# which need to plot graphs and simple shapes (polygons, circles, squares etc). Which library is better for this purpose and why? Thanks. ...more >>

First, I am not creating any new threads via invoke or any other intentional means. As far as I know, there is just one thread, which is the main thread. My windows form class creates a new DeviceController() object which initializes a serial port and defines a serial port event handler, whic...more >>

I'm relatively new to non trivial OOP programming and recently stumbled across the idea of Factory classes that can create objects at runtime. I know we can hard-code class definitions for use by our Factory classes... just wondering if it's a common practice to drive class definitions from a ...more >>

I am trying to understand the code below but I need some affirmation of the following first: The reason I inherit the "Base" class method implementation instead of the "Derived" class method in the class "Third" is because the class "Derived" method has no implementation because it's abstract. A...more >>

Does anybody know how to do scrolling text like the HTML marquee? I need to be able to set the text programmatically. I have to do it two ways - across the bottom of the screen and also scrolling up the screen for news. I can use HTML but it's not really smooth. I wonder if there is a control...more >>

I made a simple DLL in C++ application and exported the fnQuickTimeWrapper that returns the value 42. I the C# application I do the following: [DllImport("C:\\Work\\QuickTimeStreamer\\QuickTimeWrapper\\Debug\\QuickTimeWrapper.dll")] private static extern int fnQuickTimeWrapper(); When I try t...more >>

Without adding whitespace to the ComboBox datasource is there a way I can add a blank entry or, a reset entry, to the ComboBox dropdown Thanks Steve...more >>

Hi all, I am using a hashtable for my application. Its similar to word count application. How can I sort the hashtable w.r.t. the VALUE and not the KEY. The sample data of the table is given below which is sorted according the URL as in Dictionary: www.webroot.com (11) www.webshots.com (1) ww...more >>

Can I code all I want in a C++ DLL (say sockets or files) and then import and use in C# using P/Invoke? Are there any good samples on how to code a DLL (using .lib and .h files) and then use in my C# application? I checked www.pinvoke.net but I can't find any DLL source file written in C++ that...more >>

Hi i want to be able to check if information read that came from over a socket is serilisable, if it isnt i want to handle it differently. Basically i am trying to make a generic receivedata function that i can send any form of data over the wire too and it will handle it appropriately. ...more >>

Hi I am learning ADO.NET, I use DOTNET 2003, I wanted to know when you create a dataset objet and fill it with data from Data Base with DataAdapter fill method, the fill method only creates a datatable with data but it doesn't pass the structure of the table from the database (primary key et...more >>

in a databound scenario I have a database column value that is of type varchar with 3 discrete text values. Binding to this table column with autogenerated columns displays the text values in a DataGridViewTextBoxColumn column type. I would like to display images as follows but I need to do ...more >>

In C# the following code generates a compiler error ("A constant value is expected"): public void Test(string value) { switch (value) { case SimpleEnum.One.ToString(): MessageBox.Show("Test 1"); break; case SimpleEnum.Two.ToString(): MessageBox.Show("Test 2"); break; case SimpleEnum.Th...more >>

Hello everyone, Ive been trying to get this code to work for very long now, but I havent been able to catch the problem. Im trying to use the SendMessage method but when I execute the program nothing happens. Thats the best response Ive gotten from it so far, other times it mdoesnt compile. It...more >>

I am writing an application that uses asynchronous sockets to get data over ethernet from embedded devices, up to 30 concurrent devices.(These devices are written in C). My application implements an asychronous socket server while the embedded devices are the clients When the data comes ...more >>

Hi, I am using the following code to transfer messages between client and server. Upon running that code I am getting the following error message in method ReceiveFromClient on line Stream s =.... "An unhandled exception of type 'System.InvalidOperationException' occurred in system.dll ...more >>

I need buttons in my application that have a jpeg skin. However, I dont want to include the jpg file in my distribution package. How can I incorporate the jpg into c# code? Maybe by converting it to Hex code? Please let me know. Thanks. Jessica ...more >>

I need buttons in my application that have a jpeg skin. However, I dont want to include the jpg file in my distribution package. How can I incorporate the jpg into c# code? Maybe by converting it to Hex code? Please let me know. Thanks. Jessica ...more >>

My program has to access an SQL Server DB file that is in the same folder as the executable. i dont want to setup a server. i was able to do this on my own computer, the program would access any sql server db file without it being attached to the server. When i take it to another system it fai...more >>

I need buttons in my application that have a jpeg skin. However, I dont want to include the jpg file in my distribution package. How can I incorporate the jpg into c# code? Maybe by converting it to Hex code? Please let me know. Thanks. Jessica ...more >>

Hi, C# Windows Form project. string strQry="SELECT * FROM Customer WHERE CustName='John Doe' "; SqlDataAdapter MySqlDataAdapter =new SqlDataAdapter(strQry,rConn.ConnectionString); MySqlDataAdapter.Fill(MyDataSet,"MyDataTable"); And the MyDataTable now has a Row like this: 00000001 John D...more >>

Hi, I need to (somehow) show the ReportViewer (Microsoft Reports) in a ActiveX control. I got a 3rd. party app (SAP Business One) where I need to use the ReportViewer and the only way to show the control (using SBO's internal API) is through an ActiveX control. I see no posiblity to "...more >>

I need buttons in my application that have a jpeg skin. However, I dont want to include the jpg file in my distribution package. How can I incorporate the jpg into c# code? Maybe by converting it to Hex code? Please let me know. Thanks. Jessica ...more >>

Hi, In my C# windows form project, it has a form frmReport and a crystal report rptCustomer. The rptCustomer has 2 parameters, CustID and CustName. Saying now in my frmReport, I build a DataSet rDS on the runtime and it has a DataTable MyTable which has data like this: 00000001 John Doe ...more >>