I know 2.0 supports "anonymous methods" (or "closures"), but I don't see the ability to assign a block of code to a variable (I think they are simply "blocks" in Ruby). Am I correct? They seem logically to go hand in hand......more >>

I feel like I'm about to get in over my head, so before I go off the deep end I'm hoping someone can point me in the right direction. I started down the road of using a List<> of an Interface type. I wanted to be able to use List.Contains() to determine if the List already has a certain ob...more >>

Hi. I'm new to developing and c#. I'm developing a tool that allows a user to select a directory with specially formatted files. The tool then iterates through the list of files in the directory and sends their content via msmq. The part that iterates and sends the files is in a separate t...more >>

I have a C# console application and I need pop up a Messagebox. However the IntelliSense does not show for using System.Windows.Forms; So, the application does not recognize the MessageBox. Please advice. Thanks! ...more >>

Hi all, I have following code to read Excel content into a DataSet string connection = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + fileName + ";Extended Properties=\"Excel 8.0;HDR=YES;IMEX=1;\""; OleDbConnection conn = new OleDbConnection(connection); try { DataSet...more >>

Hello, I'm trying to dynamically create instances of objects using Activator.CreateInstance(), but I'm getting the above error. Here's the code that calls CreateInstance: ------------------------------- Type t = em.GetTypeByExt(ext); object[] targs = new object[] {me.Filename,me.TargetD...more >>

..eh I was stuck thinking up a subject title for this post for a while.. So I am processing a really big file (scary big). Each record is fixed length, I need to test conditions on certain fields in the record. At the moment the most efficient way I've found to process the data is a series of ...more >>

What is the real benefit of using Properties? You can declare class variables either public/private. I'm not sure I understand the true benefit. Especially if you are reading from/writing to these variables ...more >>

I'm using visual C# 2005 Express Edition and I would like to open the image in the picture box, without make the picture box larger. For the moment, the code is: private void button1_Click(object sender, EventArgs e) { openFileDialog1.ShowDialog(); Image img = I...more >>

I'm sure this is something simple that I'm missing, but here's my problem. I have two frames. <frameset> <frame name="rtop" src="something1.aspx"> <frame name="rbottom" src="something2.aspx"> </frameset> What I want is for "rbottom" to display a form and when the user presses the OK but...more >>

I have a tabcontrol in my form. I want to hide the tabpages. I want the user cant change the tabpages and do it by code.how can I? ...more >>

Hi How can i know the current status of Heap at a specific location of = program. I want to put a break point in program and want to know what is = the status of my heap at that time. OBINT...more >>

I have an application that connects to an SQL server. I need to be able to disconnect all connection that I opened. I am closing and disposing the connection but the connection pool is keeping them alive for later use. How do I convince the connection pool to drop the connections without cl...more >>

I receive a file from a client and the first 8 bytes are in Big Endian format to denote the length of the following data. This is one of the security requirements. I also have to do the same thing when sending a response file back to them. Does anyone know an easy way to convert this Big ...more >>

I found FileInfo expose alot of methods & properties. However I can't get FileType from FileInfo I can only get File extension. How can I get fileType any build-in library allow me to do that? If not please advice on what is the best way to get file type. Many thanks, kids...more >>

I want to use tabcontrol in my form.I add several tab pages but want to hide the tabs. ...more >>

Hi, When I click a button or dropdown box at the bottom of the web form the focus shifts to the top of the form. What can I do to make it stay where it is at? Thanks Gayle ...more >>

Hello, Im trying to retrieve a text between the <body> and </body> tags in an HTML file using this code: public string ReadContentsFromPage(string sb) { Regex S = new Regex(@"<BODY>(.*)</BODY>", RegexOptions.Multiline | RegexOptions.IgnoreCase | RegexOptions.Compiled);...more >>

I have a desktop application which uses AxPdf to view PDF file. axPdf.LoadFile("myFile.PDF"); Without going into much detail, I need to make sure that only one person has a given file in the PDF viewer. So before calling LoadFile, I need to make sure that nobody else is reading the file. ...more >>

Hello and thank you for reading this post. I have a RichTextBox. I need to select text inside for a search feature. Easy enough... right? Well apparently from the .NET help and everything from the net, there is nothing describing how to do a top level select that I can find (ie like how ...more >>

Hello, I am forming a aspx url with query string parameters as variables. sUrl = "http://abcd.com/getresults.aspx?zipcode=" + zipcode + "&areaCode=" + areacode + "&Landmark=" + landmark; When this url formed is run in IE, it returns an xml in the browser. Now I want to duplicate this fun...more >>

I'm using List<> to store a class of positions. Position are basically latitude and longitudes (doubles). the line is something like List<position> P = new List<position>(); Then I start adding to the List. P.add(Positions); After about 120 entry the List starts writing the enrty a...more >>

class A<Ta> { public A() { } } class B<TA, Ta> where TA : A<Ta> { public B() { } } class Program { static void Main(string[] args) { B<A<int>, int> var = new B<A<int>, int>(); //how I'd like to do it //B<A<int> > = new B<A<int> >(); ...more >>

Error: Unable to cast object of type 'ASP.CompanyDirectory_aspx' to type 'CompanyDirectory'. Code: clsCompanyDirectory = (CompanyDirectory)Context.Handler; getCompanyProfile(Strings.ConvertToInt(clsCompanyDirectory.CompanyIDValue)); Question: I have other pages with the exact same code an...more >>

Hi I have an application that connects to a SQl database on my computer via an ADODB connection: ADODB.Connection Conn = new ADODB.Connection(); Conn.ConnectionString = ("Driver={SQL Server};Server=4P-12.Leighton.local;Database=HD;Uid=l0073;Pwd=cheese"); Conn.Open(dbconnection, "", "",...more >>

I am writing an application which consists of a toolbar and a "monitor" window. I want the monitor window to be able to show process information from different running processes (each in its own tab). When I get to the section of the code where I am setting the MDIParent property, the appli...more >>

Hi, I've created a form that prints a document which i created (with the printDocument class), I draw the page's lines and text. when i'm printing it on my computer, with my printer, the printing is ok, the page boundes are ok. but when i take my project *.exe file to a computer which have ...more >>

Hi, I have dataGrid which at first it's empty. i have another dataGrid which contains checkbox column, what i want to do is, that everytime a checkbox is checked, my dataGrid will be filled with data. So my question is, Is it possiable to add a data to dataSet without erasing the data that ...more >>

Hi I would like to change the calling directory of my console c# application to sometgin else. For example calling myapp like this: C:\temp\myapp.exe I want myapp to execute and then exit but it should exit in another directory for exampel in c:\windows. How can this be done? Regar...more >>

Hi, I would like to be able from my C# .NET application to send (programatically) different debug messages to an own directory in the standard Windows Event Viewer. Which .NET classes provide access to the Windows Event Viewer ? Is it possible to configure it to automatically log the messages i...more >>

Hi! I've made a simple text editor as a training issue in C#.NET. It is a TextBox control on a form. However when I save the file or send to printer I'll get the following {\rtf1\ansi\deff0{\fonttbl... and so on with the actual text embedded. How can I in the code set the ri...more >>

Hello All, I'm having trouble writing some special characters to an XML file. I need to output a XMLSS formatted file to be read by Excel. In some cells there will be some text that contains CR-LF pairs such as "this is a long entry\r\nThis is the secondline". I'm building an XML documen...more >>

Hi I managed to put properties of a usercontrol in the designers properties window. I can enter a string, but i would like to browse for a filename (like when setting the image property for an image control ) What attributes should i add to make this possible ? Johan ...more >>

Hi All, The question is why should I use C#? If am developing a windows application, what are the advantages of using C# versus VC++ (MFC)? Thanks AliR. ...more >>

Hi I'm Using VS.Net 2003 and am trying to get the app.config file copied to the directory of the target dll by using a post build command. In Properties/Common Properties/Build Events/Post-build Event Command Line I've entered: "copy $(ProjectDir)app.config $(TargetPath).config" that shoul...more >>

might be a stupid question but can i set an eventhandler for a variable? regards Maarten ...more >>

Hi all, I just written a app that attemps to copy a user selected file to a bunch of users machines. Trouble is that when call System.IO.File.Copy( src , dest , true ) i get a Unauthorised Access Exception thrown. dest is would be something like "\\UserMachine01\c$\localScripts\th...more >>

Hi, Is there any benefit in terms of performance to using a Struct over a class to store objects? Regards Simon. ...more >>

Hi I relatively new to C# and at the moment I am having troubles accessing com objects within C#. I am working in VS.net. I add the com library I want to access to my references. Accessing classes exported in this com interfaces will throw a System.Security.SecurityException. (System.Secu...more >>

Hello, In my project i have a datagrid with 3 columns: ID C1 C2 1 Image true 2 Sound true In C2 i have a CheckBox. What i want is: when i change de checkbox state, run the CheckedChanged event. Inside this i have a sql coman...more >>