I'm confused: "why do we need to assign a method to a delegate then assign the delegate to an event why not just assign the method to the events event handler" and "how does making a callback to some method differ from calling the method as per normal"? If anyone's got a minute or two ...more >>

In c# Windows Form, there are 2 properties: Top and Left. How do I get the Height & Width that match with those of the screen at run time ? I donot want to do "Maximize" to cover the whole screen. Thanks John ...more >>

How to detect on general click event if the sender (object) is button? ...more >>

Hi, I have a general all purpose class that can take the name of a stored procedure and return a dataset... This general dataset that is returned I wish to cast to a strongly typed dataset of my choosing. I have the XML Schema and a generated specialization of the DataSet that I wan´t to c...more >>

Hi Newsgroup, I've been creating (almost done) Common Dialog class libraries (under one name space) with highly customisable common dialogs. With my ColorDialog I am able to completely hide (make invisible) the custom colours palette and move the OK, Cancel and Help buttons a little under t...more >>

Easier to show than to explain: file 1: --------------------------------------------------- namespace Somename { public class Somename { .... } } file 2: -------------------------------------------------- using Somename; ...... Somename s1 = new Somename; // E...more >>

Hiya, One thing I used interfaces for when using C++ was defining lots of header files for each interface being used, and allowing users to simply #include the appropriate header file and use the interface immediately, no linking required. I had hoped that C# would allow me to do simi...more >>

Hi All Anyone help me to set multiple drives for FileSystemWatcher component. FileSystemWatcher watcher=new FileSystemWatcher(); watcher.Path = "c:\" this is working fine. If i give watcher.Path = "c:\,d:\" its throwing exception. Is there anyway to achive this? thanks in advance...more >>

This does what you'd expect ... string[] foo = { "bar", "baz", "quux" }; .... so why is this a syntax error? private string[] foo() { return { "bar", "baz", "quux" }; } I know that it works with 'new string[]' inserted, but I don't understand why assignment and 'return' disagree o...more >>

I have 2 grids - one shows a list of table names in a database and when you click on a table name the other grid dynamically populates the grid with the table contents. My problem is that I cannot get any changes I do in the grid of a given table saved back to the database unless I nominate a pa...more >>

I forget to do this shorter way: A != B | A != C | A !=D |.....etc As far as I remember it is something like A != {B|C|D} .... Please help ...more >>

Hi, wonder if anyone could give me some code advice. I'm wondering about the best way to validate if all inputs are present and correct for object creation in an ASP.NET application. Not sure how to explain this, but I really want to separate the interface from the business logic as I may e...more >>

if I repeatedly call the following method on my winxp machine (and many others) the svchost.exe process increases its memory very very quickly, and doesnt go back donw, I have machines that after a day have svchosts taking 1 gig of ram, thank god I have 3 more to spare! public static void Get...more >>

Hello I add Microsoft Word 10.0 Object Library from reference com. and I am writing my code to create an instance of a Word application.My code is Word.ApplicationClass oWordApp = new Word.ApplicationClass(); But my application give me error : The type or namespace name 'ApplicationClass' does...more >>

Hello, I am a novice to C#. Say I have two Windows Form: A and B (not a DialogBox). Suppose I want from Form A object to create and display Form B object (passing it parameters). When closing the Form B object, I would like to get the return parameter/s. Can anybody show me a way of doing it? ...more >>

Hi, I'm trying to drag and drop onto a Panel on my form. The panel is inside a groupBox, which of course is inside my form. When dropping the item onto my Panel, I want it to appear at that point on the Panel, and therefore need the mouse coordinates relative to the Panel and not the form ...more >>

Hi, I had to convert a Win32 EXE project with some forms and classes into a DLL Project. When I instace the new DLL project from a test program I see all forms and classes... There is any way to just see one class, for example some forms and classes are only private and only one is public. ...more >>

Hello All How can i start a help-file like help.chm? Thanks...more >>

I create a component to write the error log as follow, but it seems sometimes locked by other processes, and pop up the I/O exception. How can we handling the concurrency issue at file level? Retry accessing the file if catch error => like waiting and polling. Thanks! private void LogErro...more >>

Hello all, This may not be the appropriate forum, but I'm going to try my luck. I'm designing an ASP.NET application in C# for my company. The application grabs call center statistics for CSR's on a nightly basis, and imports that data into its own database. Thus, the application is used ...more >>

Hi all, Here's the deal: I need to extend VSS (6.0) by coding a DLL add in. I've read all (not much out there) of the documentation on this, however, it's either grossly out of date (examples using Visual Studio 6) or the code snippets are in VB (5.0!). So I was wondering if anyone out there...more >>

Hi All! I am kinda confused with deploying a dotnetfx & MDAC together with my .NET applications. I was reading the "Redistributing the .NET Framework" on MSDN (http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnnetdep/h tml/redistdeploy1_1.asp) and it says there that I need ...more >>

I'm new to the C# world and learning as I go. I have a question, I'm getting data back from my database such as name/region. How can I split this and only return the region? ...more >>

hi, how can i get the startup path of a console application? thanks for any help...more >>

Hi, I have a simple socket application. There is a server, and there are many TCP connections to the server. Now, if any one of those connections is lost, is there a way of triggering an event on the server for this. What I need is to set up a delegate to handle this disconnection (Delegate ha...more >>

Hi All, Is it possible at all, and if yes, then how? Or it's very/extremely hard to do that? Maybe somebody knows...) I'm writing a Web App using VS2003/C#/MSSQL. I'm currently having about 100 different questions, some questions are having relations to another questions and should be pub...more >>

hallo, i hva got an form with ten textboxes and now i want to set all text properties of each to "test" is ther anpossibility to do this like this for (i=0 ; i++, i>10) setProp("text"+i.toStrin()", "text", "test"); thanks for your help ...more >>

Hi, I have a ListView that is shown in Details mode, and the Checkboxes property is set to true. My problem is that I dont want the checkboxes being activated when items in the ListView are double-clicked. Is this possible? Thanks! Bright ...more >>

Hi People. Somebody can help me. Some time ago I began to develop database project for a college. Actually control don't adjust that I need. I need to create a control from beginning ( from 0). can you tell me where can i find information about create custom control? Thanks. Pablo Salazar ...more >>

I want to open Microsoft word, excel and PowerPoint with asp.net and save it. How can I do that? Thanks......... ...more >>

I need a routine to get all the files in the root dir and all directories and subdirectories. For example: I have these directories structure C:\ Dir1 subdir1 file1.txt file2.txt Dir2 Subdir2 subsubdir2 file3.txt file4.txt test.doc test2.doc and ...more >>

Hi all, I am trying to add a reboot to a setup project. The help simply says to add the reboot property in the action sequence. The closest I can come to figuring out what they mean is to add a custom action...but then why have ScheduleReboot Action properties? Can anyone help me with this?...more >>

I currently am programming apps using the vb.net language and haven't seen to many problems with it, since migrating from vb6. I love the enviornment, and the ease of use but wonder could my apps be better in c#? I have studied vb6, vb.net, and c++, and am currently learning alot about c#, and w...more >>

Is there a function similar to ShellExecute, which I can hook to when the program is started using Start Menu icon? MCzajk ...more >>

How do I test for DBNull? The following does not work. System.Data.DataRow aRow; if (aRow["ServerName"] != null) { aServer = (string)aRow["ServerName"]; } ...more >>

I'm having difficulty with creating dynamic types, TypeBuilder is attained through module builder which in turn comes from assembly builder. I assumed that if you save the assembly you'd save the type (made with the typebuilder) as well. When I save and load the assembly it comes back as having no t...more >>

Hi, How can I make the XPath case INsensitive for SelectSingleNode()? Thanks. ...more >>

Hello, There is what I want to do. I worked on the problem since 6 hours but I had a problem (probably stupid) and I dont know how to resolve it. I need to have an Mouse Event Click when I click on the frame of a window form ( like the title bar of a window). If I handle the mouse...more >>

can anyone suggest me a book which helps in working with database sqlserver2000 using c# with good examples ...more >>

Hi, I was wondering if it was possible to hide the first column of the datagrid (windows form control). The column that I am referring to is the column created by the control that is gray in color and contains the selection arrow. My goal is to use the datagrid in place of a ListView control for p...more >>

Ok, Consider the following example: School Class - StudentCollection Property StudentCollection Class : CollectionBase - Add - Item - Remove Student Class - Name Property - Age Property Now, Up until this point, whenever I had a set of objects I needed to store in a collecti...more >>

I have a basic question about something as simple as Intelisence. When making variables in VB.NET I do Dim a as <<<----- and right here pops up intelesence of my type options, so that helps me decide what I may want, Double, Single, Int32, Integer etc. Well with C# I put in a <<<---- and o...more >>

Hello, I have a rather large number of files and I would like to check for duplicates. Name or date are not relevant. I found the MD5 class which seems to be suitable. Can I use the returned byte[] as an index in a hashtable in order to create a mapping from key and identical files (i.e. ...more >>

Hi all, I have developped an application that generate XML documents. At most time it works fine, but sometimes (when the size of data to export is big) i got the error message : << The StartElement token in the Epilog state will generate a nonvalid XML document : at System.XML.XMLTextWriter.A...more >>

Does any know how to return a recordset object from COM+ component written in C# so that it can be used as a Recordset in classic ASP? I have the frame component written i'm just not sure what object/class i should return. I tried returning SqlDataReader and ASP 3.0 found it to be ADO type da...more >>

I am trying to find out how many characters I can fit in a line I am using a Courier fixed font My font size is 10 and 12 (ithink its points but not sure what the other type of measurements would be). My page is 11 inches wide by 8.5 long and 8.5 wide by 11 long Can someone assist me in calcu...more >>

Hello, just a quick question which I hope has a simple answer... I have an SP which performs an inner join on 2 tables (User and UserStatus) and I used the dataset's .GetXml() method to return the following: <User> <UserId>1</UserId> <UserStatusId>1</UserStatusId> <UserType>1...more >>

Hi, In my application I need to round a number to 3 decimal places. I am using the Math.Round method which works fine. The problem I am running into is when the number has no decimals like 5 because I need to show it as 5.000. How can I accomplish this? Thanks ...more >>

There are a number of things about using unmanaged resources in Windows Forms programming that is unclear to me. In C++, if you loaded an icon resource using "ExtractIcon()", the resource was valid until you called "DestroyIcon()". If you didn't, you had a leak. In C#, I need to load icons...more >>

How can i make msn messenger style popups (like alerts/when someone messages you for the first time - the little box that appears in the bottom right hand corner of your screen) with c#? ...more >>

Just curious, What is the proper way to add event handlers for web controls in a ascx/aspx page in csharp? The way I've been doing it up until this point is adding the += eventhandler in the Page_Init method. Is there a more effecient way/proper way to do this? thanks...more >>

Hello all, I have this problem: I have 2 forms. Form1 contains a checkbox, which I want to uncheck from Form2. I set the checkbox to be "public static" and when I try to change a property (e.g. Form1.checkBox1.Text="Sample") I get this error: An unhandled exception of type 'System.NullRefe...more >>

Hello everyone. I have a question that I tried to find an answer over the weekend but did not succeeded. I have a Word template with a couple of "tags" ( <<My Tag>>) that I need to replace with data from the DB. Please point me in the right direction on how to approach this. Code samples, link...more >>

My application abends when I press a tab on the tab control. I have tried to trace what is happening, but is never shows me the line of code which is failing, I only get a message box telling me I have a null pointer exception. I understand that I can use the "Call Trace Stack" tab in the ...more >>

I'm a bit curious about how OOP works "under the hood". Consider this (C++) class implementation: <code> class MyClass { int x; void Method(); }; </code> Now, as I understand it, this would actually be compiled down to something like this: <code> struct MyClass { int...more >>

Does anybody knows how to play wav file on PocketPC 2003. Thanks Raj *** Sent via Developersdex http://www.developersdex.com *** Don't just participate in USENET...get rewarded for it!...more >>

Hello all! I have a question regarding toolbars... I was wondering if a toolbar has the ability to merge with another toolbar, just like in the usual menu bars. Thanks a million! -A ...more >>

Is it not possible to declare a nested class in a seperate file from its "parent" class -- i.e. in a similar way to the idea of spreading namespaces over more than one file?...more >>

Hi, I found a sample on internet : formMain.BeginInvoke(new MyClickHandler(this.OnMyClick)); I would like to do the same but in a class library where there is no forms ! Where can I find a BeginInvoke equivalent for a class library ? Thanks Arkam...more >>

Is it possible for a Dataset that is added to a C# project to be based on a stored Procedure? Can I use either a OracleClient or Microsoft Oracle Client? Any help is appreciated. Jawahar ...more >>

Should I be concerned with the amount of memory my C# applications use? I have 2 gigs of ram, and I use most of that without running any C# applications. So, when I see C# applications in development, which are using much more memory than their Delphi and Python equivalents, I am a bit wo...more >>

Hi I am taking the 2555 class and a lot of the material is over my head. I don't like the MS's book because there is no step-by-step on interacting with the VS.NET Is there good free resource in the web? If not, I have pulled a few books in the following. I am wondering which book has the co...more >>

Hello, I've got a design question. I need to keep track of some variables and I am planning to put them inside a class or struct. Basically I'm talking about 10 bools, 20 ints and 2 arrays of ints. The size of the arrays would depend on some external value (going from 0 to around 1000 max). I...more >>