Hello, I have created a C# class library and a want to install it with the help of a Visual Studio Setup project and register it for COM usage. During development of the library it was no problem to register the resulting dll on my computer by the option in the project settings. But in the ...more >>

Hi, Can someone help me convert the following C code to the C# equivelent? Basically, we're trying to use a variable (iIndentLevel) to change the number of spaces in the string. sprintf(buff,"%*sEntering: %s\r\n",iIndentLevel," ",pFunctionStringTable[sTraceData.usFunctionNum]); Thanks al...more >>

Hello I' invoing a windows form from within a console application. I'm using: Form1 frm = new Form1(); frm.ShowDialog; The only problem I can't solve is how can I make the form to the top most window of the screen. By now it's hidden behind the console and frm.Focus() doesn't work. Does ...more >>

Hi, Maybe I'm wrong, but we get an exceptoin on File.Move ("FileA", "FileB" ) because FileA is still in use (sharing violation), but the Exception.Message says: Process cannot access the file "FileB" because it is being used by another process. The destination FileB does even not exists,...more >>

hello there's something that I don't understand what is the difference between running a service in say User context and LocalService security context ? and what is the difference between NetworkService and LocalSystem ? those two are a little confusing could you explain in english plea...more >>

Hi, I am getting started with microsoft Logging Application Block and I wonder if any one can direct what is the best way to use this block in such a way that I can have an application which read the log file immediately as a new entry was added to the log, I am thinking to format an "entry" ...more >>

namespace Foo { public interface IDoStuff { // method declarations } public abstract class Fee { // abstract methods for the subclasses to inherit } public class Fum { // Needs to inherit from Foo.Fee class // Needs to implement Foo....more >>

Hello, I am currently writing a .NET usercontrol to be hosted in IE. The problem is, the assembly doesn't seems to be able to locate the external dll (e.g. AxInterop.SHDocVw.dll) it is referencing. Any hints? Thanx, Terence *** Sent via Developersdex http://www.developersdex.com *...more >>

Does anybody know of a library in c# that will aid in making resizable dialogs? Similar to http://www.gipsysoft.com/articles/dialogsizer/ http://www.codeproject.com/dialog/easysize.asp but in c# ...more >>

for example: SqlConnection is used in my project, how can I know if all connections were closed after open and execution. If some guys forget to close connections after using, how can i check it out ? best, eric ...more >>

Hi there. How can i process the folders under the default web site and do "create application" task on spesific ones in .net with c#? (i know the names of them.) Thanx. Burak SARICA ...more >>

Through my MDI application, I open a FormX that is opened outside of the application (not an MDI child). How can I check if the Form's open so I don't load two instances of the same window? Is it possible that, within the MDI container, a Form can have TopMost equal to true? For some reason, ...more >>

how to make two references to one string that stay refered to the same string reguardless of the changing value in the string? ...more >>

ok so lets say i have a string that got passed into a method by ref but i want to see how many other places that string is refered to is this possible? ...more >>

hello friends whilst studying I came across I don't quite understand.. what is the difference between COM+ registered in GAC and simply registered in windows com+ services ? I think both are system usable. from my understanding to install to gac we use gactutil but to install to windows ...more >>

Hi all. I'm working on debugging someone else's code. The .NET application is a mess...I can't open the project or solution files, so I've started over...creating new projects and such. I'm working on a form that gives me the following error when I try to build the project: The type or name...more >>

Hi, I'd like to programmatically change the "Keep Printed Documents" option for a printer. The option is available in the Windows UI by going to the Advanced tab on the printer's Properties dialog. Turning it on causes Windows to save copies of printed docs in the printer queue (marked as '...more >>

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hello all I am using VS.NET 2003. What I am doing apart from teaching myself C# is learning my way round V.NET2003 also. OK so I have a project, it's built and saved. I also want to start my own collection of Classes that I will save u...more >>

I have a a filled datatable with 3 datacolumns and I need to add a 4th datacolumn that will contain information according to one of the columns. For example, for one record, Col1, Col2, Col3 will contain "Mr", "John", "Smith", respectively. The newly-added 4th column (Col4) will evaluate Co...more >>

Hello, Anyone able to grab the namingContext using C# with an openldap backend using directory entry? For example: DirectoryEntry de = new DirectoryEntry("LDAP://" + serverName, userName, password, AuthenticationTypes.Anonymous); A object of type OpenLDAProotDSE is returned but contain...more >>

I created datagrid with dynamically generated datacolumns and edit/delete button columns. Sometimes, I want to to hide first column from the database because it is a primary key. When I add the following code to any place in the source code, I realized that it never gets to the following code...more >>

// This works fine when using MyNameSpace but not // from MyNameSpace.MySubNameSpace myImageList = new ImageList(); myImageList .Images.Add((Image)new Bitmap(GetType(),Resources.Images.FolderClosed.ico")); How can I get these resources from a class that is using a namespace of MyNameSpace....more >>

How do I trim the left digit from a number? The user will input a number with 3 digit value and I need to trim the leftmost value from the number. A typical value might be 123.4567 and I need to remove the 1 and use it's value in another calculation. ...more >>

Hi, I'm using a form to collect values for later analysis. My question is, how do I validate the value the user inputs into a textbox? For example, many of the values require a real number and nothing else is acceptable. Others may require an integer. Thanks, Scott...more >>

How do I go about accessing elements of an Arraylist using something other than the index? I have a class that manages a number of subclasses. Those subclasses are stored in an arraylist. The subclass has a key property that is a string. I would like to be able to call Class1.SubClassMana...more >>

Could anybody help me to write proper code to restart my application? public static void OnRestartRequest() { ... } Restart is needed after exception handled and may occur anytime in application life time ... ...more >>

I have had a look around but I'm either not finding or not seeing the answer to this, what i want to do is reurn the results as an array, or some other worldly useful format that flash mx2004 can read. But when I did thiss I was told datasets were the way to go, but needs an array, prefer typed ...more >>

Hi all, When using an asynchronous API call (in my case WriteFileEx) in a thread it seems to become blocking instead of non-blocking (see details below). Can somebody explain me what is happening here... Details: I wrote a simple program that is able to do very fast async writes to disk. ...more >>

Hi All, How can i excuete a bat file by c#? I used System.Diagnostics.Process.Start("../stage.bat"); but it cannot find the file, is this the correct method to call the bat file? thx choihead ...more >>

Dear All, private void button1_Click(object sender, System.EventArgs e) { string a = "22222"; string b = "23456";<--------break point } My problem is why I get the following error message when I stop at the break point and debug in the Immediate Window? (In VB.net, it doesn't...more >>

Hi, how can I get query execution time? I am using ODBC conncetion, and OdbcDataReader...more >>

I have created an event and delegate combination for use in a user control when I place it on a form. However because I'm not actually doing anything in the event in the user object I didn't create any code for it. 1) How do I get rid of that warning (besides creating an empty declaration) ...more >>

I'd like to display some HTML code in a form using the axwebbrowser control, without having to create a temporary file to navigate to. I'm trying the following code (let's say that the web browser control is named wbb): object o = System.Reflection.Missing.Value; wbb.Navigate("about:blank", ...more >>

I would like to create a new exception class with an additional parameter, something like this: public class MyException: Exception { private String field = ""; public void MyException(String Message, String Field) { this.field = Field; ... } } How do I go about this? In parti...more >>

Hello, Is it possible to modify the print dialog box that appears when a user clicks File->Print? Is it possible to make this modification so that all Windows programs use the modified print dialog box? What about just changing the print dialog box used by Internet Explorer? Is there ...more >>

Hallo NG, i need to programm a virtual printer driver, that you can use it as a file format converter that intercepts and converts any printable document into standard BMP/TIFF/JPEG raster images in just few clicks. My question how can do this job in C#, the generation of the images is not the...more >>

I have a C# program that is scheduled to run at system startup. When a user logs into the machine, how can I show a status screen of the running application? I tried with a NotifyIcon but the icon does not show in the tray....more >>

Thought... I have a collection of objects. The object has a property called Name. I want fill a string array with each object Name. What is the quickest or best way to do this? Do I have to loop thru the collection and add each name to the array? TIA, Y ...more >>

We've broken our app into various assemblies. The WinForm assembly provides the user interface, other assemblies provide various I/O services. I'd like to be able to call System.Windows.Forms.Application.DoEvents from within a dll, but it isn't allowed. I don't want to link the dll to our WinF...more >>

This is a multi-part message in MIME format. ------=_NextPart_000_0008_01C4C0C2.798F9D60 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi, Friends: Our reception lady wants to know if a staff is in office or not when a = call comes in. I thi...more >>

I have an application that queries SQL Server and Index Server using ADO. I'd like to have a feature where a user can cancel a long-running query. What I plan on doing is to move my query code to a worker thread which will then post a message back to the main thread when it's done. Then, the ap...more >>

Hi, I created a COM object in C# and everything works fine on my machine. Now, the compiler gives me the following messages when compiling my code: ------ Rebuild All started: Project: SI, Configuration: Debug .NET ------ Unregistering previous project output for COM Interop... Preparin...more >>

Hi, I have few textboxes and combobox in a user control. How can I detect if a user has changed the value of combobox and the text in textbox? I know that textbox has a CanUndo property that return true if user has changed the text, but what about combobox? I have heard of IsDirty, but h...more >>

I want to pass the type of an object as a field in an object. public class FileEventArgs : EventArgs { public object Data = null; public Type ClassType = null; } In another function, I want to test ClassType. Depending on the Class Type Data is handled differently. I can't wor...more >>

I'd like to create my own theme but do not know how to do that. Can someone direct me to a document or sample I could study? ...more >>

Hi, I have an application that makes up of files(reading data). Files are currently located on drive C. Now I am going to write the program and the files being used to a CD. The program is going to be executed on different computers and so the CD-Rom drive letter is not going to be the sam...more >>

Hello All, I have been working on .NET (especially C#) applications on this computer for a long time. Everything was working fine until yesterday, but when I came back into work today and tried to open up an application taht I've been working on for a while (and subsequently tried all the o...more >>

hey guys: I use SqlDataAdapt.update method to update database that appearance an error looks like following. Update unable to find TableMapping['Table'] or DataTable 'Table'. Here is My Code //---------------------------------------------------------- SqlCommand _mInsertSqlCom...more >>

Hi to all, i have a class (of type collectionbase) that creates a collection of objects for instance persons. For other hand i have a Datagrid whose Datasource its the collection wich i talked in last paragraph. Until here no problem, the Grids shows to me the collection. But i woul...more >>

How do I convert the contents of a textbox to a double for mathmateical operations? I'm using a form to collect values and when the user clicks OK, the vlaues are used for calcualtions... but they need to be double data type. Then, after the calculations, how to do I convert the double back in...more >>

plzz help me to add How a Blank row in a datagrid without using dataset or any other. plzzz help me...more >>

I'm running into a weird circumstance with Visual Studio 7.1, where it will not properly indent a while loop nested inside a do-while loop. It compiles and runs fine, but the automatic indenting messes it up every time. Here's an example: using System; namespace Do_While_Test { class ...more >>

Hi Group, I have written a window service wtih SAP.NET Connector which is to fulfil request from SAP client. SAP client will call a function exposed by my window service that has a big "out" parameter. That "out" parameter is of class SAPTable, you can regard that as DataTable. As e...more >>

I thought when you tabbed into a textbox that the text it contained was automatically highlighted. This use to be the default in win32. Is there an easy way to do this in .NET. I don't want this to happen if the mouse is used to select the TextBox. Seems wierd, If the Textbox has the default...more >>

I'm sure there's been loads of posts (and answers) as to "how do I add a system tray icon", but how can I add the sort of minimize button that looks slightly different and sits alongside the existing minimize button, that is (fairly obviously) intended to send the app to the system tray, where...more >>

I'm trying to figure out the best way to accomplish a task. I need to calculate the numerical values from about 300+ textboxes. Basiclly I have an application that users input checks and credit card receipts into and the program calculates the total.. Right now I am just doing Decimal.Par...more >>

Hi, Does anyone know how to change an index of an object? This is what I want to do. eg: I have 5 controls in a panel. index from 0 to 4, after I remove the 3rd control (index 2), I want to change the control with index 3 to 2, and 4 to 3. (push up) ... so when I add new control to the p...more >>

Hi! I'm kinda stuck here. I have an Hashtable with with my custom "Item" Object. The key used in the Hashtable is the "Item.Id", i have selected this key because with a lot of functions i can get the right object from the hashtable really fast. But now i need a function whom can get an object...more >>

Hi All, I am trying to write a C# program to call a routine in managed C++. In the routine, the C# program passes a delegate to the managed C++. The delegate looks like this in c++: public __delegate void FoundPidDelegate ( unsigned char *pData, ); The C++ is able to call the C# beca...more >>

Hi all Do C# and .net have some way to monitor a folder in Windows XP/Windows 2000. I want to mirror the content of the folder, including subfolders (if any exsists) to another place, and I want to mirror the changes as they happen. ...more >>