What is the best way to creat a instant chatting program like msn? I mean, the part of detecting that a user has send a message to you. Thanks! ...more >>

How can i capture photos and videos from a webcam? Thanks ...more >>

I have an data structure with a bitmap as a member. I want to be able to copy the object to the clipboard and paste it back into my app as a new object, or into another app as a bitmap. It looks like the dataobject class does this, but I'm not exactly sure how to set it up. 1) Should I j...more >>

How to call a virtual function ancestor class in C#? http://www.alvas.net - Audio tools for C# and VB.Net developers ...more >>

I'm stuck on this crazy problem. I need to get this list into this type of dictionary object: Dictionary<string, List> I have this collection passed to me named "items" -Animal Dog Cat Cow -Food Apple Nut Carrot -Vehicle Car Boat Train The string part of the dictionary object ...more >>

Hi, I have the following classes and am getting an error "Projects does not implment inherited abstract member on Insert()" Only the essential code is shown public class DCBase { public abstract int Insert(); } public partial class Projects : DCBase { //some code here ...more >>

I use switch statement to create Generic list for combobox: using EntityExtension; public static class ComboPickList { public static object GetObjectPickList(string entityClassName) { switch (entityClassName) { case "Customer": return new List<Customer>(); case "Item": ...more >>

Hi! How can I create a custom Form() within a component and have it create a proper handle? Currently i can call CreateControl but there is no effect. Should I assign a parent? Where do I get the parent from, (hopefully without the explicit reference to the main form). Thanks! Atmapuri...more >>

My computer recently crashed, so I rebuilt it and installed office 2003, VS 2005, PIA for 2003 etc (as it was before). But very strangely, all my C# based Excel automation add-in stopped working. In fact I can load them into Excel without any error message, i.e. Tools / Add-In / Automation / Se...more >>

I know the assignment operator is shallow and I know it can't be overloaded. What I can't find (on the web) is a best practice or guideline for assigning the values of one instance to the value of another instance of objects. In C++ I would overload the assignment operator to achieve what I wa...more >>

Hi! How can I have a thread notify the main thread that it has ended? The thread object seems to have only one event, ThreadStart. Thanks! Atmapuri...more >>

I've spent much of today researching how best to get around C# not supporting typedefs. I relied on them quite a lot in C++ and finally broke down today testing out how best to emulate them. (I toyed with using enum types within ClientRetType<> but this fell apart as enums are not types, was t...more >>

Hey ..NET 2.0 In my code am I trying to convert an int value into a decimal: decimal d = 0; int k = 87664; d = Convert.ToDecimal(k/100); The last line of code gives d the value 876, instead I want it to be 876,64 any suggestions? ...more >>

I am attempting to dynmically create a class that looks like this: -------------------------------------- [Table(Name="ClientTable")] public class ClientTable{ [Column(DbType = "VarChar(400) NOT NULL")] public string FirstName { get; set; } } -------------------------------------- The ...more >>

Hi This seems like a crazy question but I wanted to find out if anyone knows which one of those two conditions are better (faster, smaller memory footprint, can be optimized by the compiler, etc..) 1- if(i > 0) {// do stuff} 2- if(i >=1) {// do stuff} Thanks. -- Mahdi....more >>

I am trying to test a WCF web service in Visual Studio 2005 that has been configured to use wsHttpBinding and getting a security error. I am not sure how to do this. Is there any examples or docs on this? ...more >>

I have been experimenting with overriding the Paint event on Win Form controls...more specifically trying to force the text to render as Antialiased text. I have not been successful in any of the methods Ive tried...is there a trick? Any information or examples would be greatly appreciated....more >>

how can I fix this problem? Event Type: Error Event Source: VCSExpress Event Category: None Event ID: 0 Date: 2008-01-21 Time: 00:18:50 User: N/A Computer: myA64 Description: The description for Event ID ( 0 ) in Source ( VCSExpress ) cannot be found. The local computer may not have...more >>

I'm a VB.net programmer learning C#. I don't understand what indexers are for in C#. Can't you have arrays of classes that can be indexed in both C# and VB.net? And if they contain arrays as members, can't those arrays be indexed? What doesn't VB have indexers? Thanks? -- Marvin...more >>

Could anyone tell me why the following do not match? ^ABC_\d{6}_\d{6}$ Should match(twice): ABC_123456_789123 ABC_123456_789123 It matches: ABC_123456_789123 But not the double one. Regex options set are: RegexOptions.IgnoreCase | RegexOptions.IgnorePatternWhitespace | Regex...more >>

Yes I am "looking to persist the structure to some storage, and then get that information back somewhere else, you can use serialization"! Please could you show me how to do this? Thanks Paul Jarvis PhD Student The School of Community Based Medicine The University of Manchester ...more >>

Hello, I want to create a collection that will be accessed like the following, that returns a Boolean value; MyClass[userID].Attributes[SomeEnum.Value1]; Can someone help me with how I should design this cusotm collection? ...more >>

I have a WPF application that spins off a thread. That thread needs to show a dialog (InputDlg) to get some user input. The From my thread I am displaying the dialog as shown bellow. The problem is that each time I display the dialog (when I call Invoke) some memory is allocated but it is never ...more >>

I've got a search algorithm where I would like to allocate my nodes in blocks. In other words, I would like to reserve enough memory for 200k nodes and then just keep my own pointer into that block. I don't want to do 200k small memory allocation calls. It seemed that this made more sense when I...more >>

I have a large structure, below is a simplistic version of my structure: public struct MeanMinMaxSd { public double mean; public double min; public double max; public double sd; } public struct StatisticsReport { public int a; public int b; public MinMax c; publi...more >>

I've recently made the switch to C# from vb6 and although loving it I'm plagued by concurrency problems when updating new recordsets. I've solved prior problems by using the FillSchema command and changed the database to make things harder to fall apart but I'm still having the same core problem...more >>

I would like to pass a parameter (with or without using a windows service), so the user can be taken to a particular form when opening the application. The user recieves an email notification containing the information they need, this additionally contains a link to the publish.htm, as the ap...more >>

I have a block of SQL that has print statements in it. When I execute it with Query Analyzer the output from the print commands goes to the messages pane. Is there any way to get those messages when I execute the same SQL through a SQLCommand in C#? Thanks -Cam...more >>

I am creating a web site that allows admins to edit the website from within the site (add contacts, events, etc.) After modifying the content by either adding, editing, or deleting some info, I want to display a Javascript alert. When I write the Javascript in the markup and add the event to ...more >>

Hi, i'm trying to reference some objects using reflection and Late Binding accessing. The Object API to his methods it's easy to understand, and it's as "Object.Method" - aka. "Clientes.Existe"- So, to reference this object, it was simplier to me resolving this with reflection, and it was ...more >>

Hi again My C# Form is part of a .xll . I have managed to get the Form to open up but now what I want to do for one of the TextBoxes is have the user input an Excel range which can set by clicking a cell/range back in the calling session of Excel. So, if the user clicked on cell $A$1 then ...more >>

I have written a parameter attribute class ("AttributeTargets.Parameter). One of several the constructor arguments is a parameter to specify a default value for the method's parameter. I would like to emulate InteropServices.DefaultParameterValueAttribute behavior where at compile time, the ...more >>

Hi there In a Form I have created I am trying to Sort a List<string> extracted from the Keys of a Dictionary. However, when I attempt to build the project I get the following error: Cannot implicitly convert type 'void' to 'object' The relevant code is as follows: private void Form1_L...more >>

Hi is it possible to have a default value for an automatic property? For example, say I have a property public string Name { get; set; } Can I have the "name" set to a default value of "Peter"? (I guess I could write a constructor that does this). /Peter...more >>

Hello, First, sorry for my English... I'm triying to load data from store procedure into a gridview. The most simply is doing 'myGrid.DataSource =3D myDataTable', but this 'myDataTable' returns a numeric value that I need to transform (this numeric value is an ID, and i need the descripti...more >>

Hi, I have a XML like following: <entities> <entity created="09.01.2008 12:43:50"> <item NAME="MyName" VALUE="MyValue" /> ... some more items </entity> ... some more entities </entites> I want to iterate through the XML but I want only to read the entity objects where the creat...more >>

I have timestamps in this format: 21-01-08 08:09:53:4118488 I want to convert these into DateTime. I can't make DateTime.Parse() behave. Help! ...more >>

I have code in Winforms 2 combobox: EntityBase entity = EntityManager.FindById(LookupTableName, id); IList entityList = DataSource as IList; entityList.Add(entity); Last line causes strange exception below. Entity variable type is MyApp.EntityExtension.Klliik which is inherited from my...more >>

Hi all, I want to fill a TreeView with some heave data. this action may take several minutes and I'd like to show to the user a model dialog with a simple ProgressBar ('Marquee' style). I managed to work before with BackgroundWorker and Invoke methods, but this time When I try to add a node to ...more >>