Hi, I am a newbie to C# and Im trying to redirect standard input, output and error of a console program written in C (MS VC 6.0) to a textbox on a form. The code for the redirecting looks like this: private System.IO.StreamWriter c_StreamInput = null; private System.IO.StreamReader c_Stream...more >>

With WebBrowser control in .NET 2.0, in DesignMode, when I double click a word to select it and then try to type, it won't let me, until I press Delete or Backspace and manually click on the page to reset the carriage. Clicking and dragging to select text works as expected, it's only when doubl...more >>

Hi all, Could anybody suggest what should be the return type of the method Create in the Factory class? In Java I would have used the wildcards, but here in C# apparently there is no way do do it?!? public class B<T> { } public class D1 : B<int> { } public class D2 : B<float> {...more >>

This may sound like a weird desire, but is there any way to get a reference to the actual MulticastDelegate that was used to invoke a handler, from within the handler? Maybe through the call stack or something? ...more >>

Guid is a structure type. How can I add it to an ArrayList?...more >>

Hi I'm writing a web based system, which needs to direct prints to a Zebra barcode printer. I plan to use the ZPL (Zebra's own) programming language for sending Raw ASCII to the printer, and therefore enabling the printing. Does anyone have any sample code on sending Raw ASCII to a printe...more >>

Whats wrong with this code? DataSet ds = new DataSet(); DataTable tbl = new DataTable("Tbl"); tbl.Columns.Add("field1", typeof(string)); tbl.Columns.Add("field2", typeof(string)); tbl.Columns.Add("field3", typeof(int)); ds.Tables.Add(tbl); DataTable tbl2 = new DataTable("Tbl2"); tbl2...more >>

Hi, I am trying to get this code to work just to check if i can trigger an event when the mouse goes over a button. But it doesnt seem to be working, can anyone help? void butRussia_MouseHover(object sender, System.Windows.Forms.MouseEventArgs e) { System.Console.Write("ello"); ...more >>

I would like to know how people these days are creating their own rich text editors for use in web pages. Does anyone know where to find material on how to go about doing this? I would just like a basic control for bolding and highlighting text. Do I need to learn active-x? Can it be done in .ne...more >>

Just when I thought working with this unmanaged DLL could get any more difficult.... I have to deal with this: <exception> {"An attempt was made to load a program with an incorrect format. (Exception from HRESULT: 0x8007000B)"} <exception> Here is the sig. of the unmanaged DLL I'm trying t...more >>

I'm trying to learn to use DirectX in C#, but all of the examples I've found so far are pretty unstable (crash when minimized, crash when the window is resized so its height is 0 pixels, crash on ctrl+alt+del, etc) Does anybody know of a tutorial out there that handles the exceptions correctly...more >>

Hallo Mein Ziel ist es, das Desktop-Fenster als Bitmap zu speichern bzw als Bitmap-Objekt zu erhalten. Das geht auch recht gut mit Graphics.FromHwnd() und der Verwendung von GetDesktopWindow() und BitBlt() (Win32). Das Problem ist, dass die API-Funktionen GetDesktopWindow() und GetShellWindo...more >>

Hi all I want to do Http POST from C# application i m using webclient for that . Mi prob is when i am posting data i need to fire Button1_Click event which is not firing . Like this is client Code WebClient myWebClient = new WebClient() ; req.ContentType = "application/x-www-form-urlencoded...more >>

Hello, I run into trouble move down a selected item in a listbox. The code moving down the item is the following one: for (int j = lv.SelectedItems.Count-1; j >=0; j--) { ListViewItem moveItem = lv.SelectedItems[j]; selIdx = moveItem.Index; // ignore movedown of la...more >>

I've just started using VS(2005) and the first couple of projects I've used VB since it's easy and I wanted to get my feet wet with the framework. Now I want to start on some C#, but I can't find the editor options for the C# syntax. I remember when I first started playing around with VS2...more >>

Does anyone know of a PDF viewer component that allows a user to select a range of data (text) and then be able to extract it? I don't need to modify the PDF at all. -Joe ...more >>

I have created a custom exception class for my application. In it, I want to be able to automatically output the ToString() from the object causing the exception. (I use the ToString() to output the state of my objects to help with debugging). However, the ToString() method, being often overri...more >>

Hi, I'm C# Developer re-write VB6 Application to C#.Net, also support the old VB6 till i finish the project.. I Try to use VB6 Visual data manager to create a DataEnviroment connection and 3 command.. Command1 is the parent for other to command.. I didn't find anyway to pass the paramters to ...more >>

I have a custom component that can be dragged from the ToolBox onto a Windows Form (which means I can't modify it's constructor to add a name parameter). VS assigns it an instance name, but the developer can modify it's name. The name shows up in the property window as "(name)", I want to find a...more >>

I need to read a binary file which has mixed data types embedded in it. Fixed length strings, 16-bit integers and zero (null) terminated ASCII strings. (akak ASCIIZ) The first two types are no problem, but the zero terminated string is a problem because I have to read byte--by-byte with Bin...more >>

I am trying to create a dll that I can call from my web pages. The problem is that it doesn't work the same way as a web page that calls the web services. I created a Library Project and added a web reference: RemoteUser, just like I do in my Web Page. I have the following: ************...more >>

Hi, Is it possible to call a web service without referencing. Since I have to get the url (web service is running) from the user and then call a method in that. Regards John ...more >>

Hey All, I'm wondering if I'm able to have create generic user controls in .net 2.0 much like one can create generic classes. I would like to do this so that I can handle a set a types derived from the same base type within a user control Consider the following scenario: * I create a b...more >>

Is there a way to update data in a DataTable cell? I have column dates that are string type. I want to add another column to this table: dt.Columns.Add(new DataColumn("Datecolumn2", typeof(DateTime))); Then loop through the table adding all of the string dates to the same row but in the ne...more >>

Hello, I have a (hopefully simple) problem. I have a form, lets call it frmMain, and this has a database connection object on it (sqlconnection) declared as public. All works well. One of the operations I want to do will occur on a second form (call it frmChild). I can open up this qui...more >>

Hi, Can somebody explain please the meaning and use of a STATIC method? Thanks, Doru ...more >>

Hi all, I have to do a website in chinese! Basically I just need to know how to output chinese characters. I am assuming its very easy, but have never done it before. I can however do simple things like changing the formats of currency and calendars and so on. I am guessing the answer is qu...more >>

Hi guys. I am trying to create a specific object calling its constructor based on a string containing the name of the object. Let say I have three objects A, B, and C. Also let say I let the user enter a text in a textbox. If the user enters 'A' or 'B' I want to do this if (TextBox1.Text ==...more >>

Several years ago UML became a hot topic in the tech industry. At the time I was taking a class and the prof told us all that UML was really nothing new and that its authors were trying, for better or worse, to get some standardized object modeling notation into common use so that we could all...more >>

Can someone recommend a commercial error handling package I can add to my C# programs? (VS .NET 2003.) I'm not finding any googling. I know I could write my own or adapt something off the interet but time is of the essence and I prefer supported software. Thanks. -- Mark ...more >>

Please consider this sample code: It registers a delegate with an event. p1.FirstNameChanged += new Person.NameChanged(p1_FirstNameChanged); Now the following code removes the delegate: p1.FirstNameChanged -= new Person.NameChanged(p1_FirstNameChanged); The above line that removes the dele...more >>

Hi, Is there any kind of mouse over type method in C#, that will change the mouse to a different pointer when the mouse is over a picture box. The reason i as is that i am intending to use a picture instead of a button to move to another form and its not obvious, without writing on the ...more >>

I have a user control that inherits from the standard windows text box. I have a routine that adds stuff to it. I have compiled it into a dll. I have added it to my app and I can debug into it. I can see that the text changes but it doesn't actually update on the screen (the text itself is cor...more >>

Howdy all, I am getting a compiler error regarding a consrained conversion. It complains that it can't make the type conversion, even though the generic type argument inherits from the target of the conversion. I have trimmed my source down as much as possible. The classes implement some...more >>

whats the basic differences between component class and regular class in C#. Apart from component class have container support feature, does these classes enjoy any special behaviors?? thanks in advance --RK ...more >>

When extending CollectionBase is it possible to sort on a particular field of each object in the collection? For example if I created a inherited class from CollectionBase and filled it with "Sale" objects and each Sale object had a SaleID property, can I sort by that? Thanks, -- War...more >>

Hi All Pro, First, thanks you all in advance for your kindest help, I am very appreciated. I did have two event on the form, which are: Form1_MouseDown(...) and Form1_MouseMove. The problem is: my form didn't move at all when I do move the mouse. But, If I have a breakpoint at mousedown, w...more >>

Has anyone done any performance testing between new generic Lists and single dimensional arrays? I really like the code flexibility the List provides since I don't know how many items I will have in the list. With my array approach, I have to manage re-sizing the array myself. So, is...more >>

Is there a way to make a common place for directories other than the Windows folder? I have a group of dlls used by multiple programs that when I update them, I need to have all the apps use the new version (specifically there's a class that holds my messages for a message queue and everybody ...more >>

Does anyone know where in the registry the following goes? WriteProfileString("windows", "Device", DeviceLine) Or where this comes from? GetProfileString("PrinterPorts", vbNullString, "", ProfileString, Len(ProfileString)) Or where this goes? In Start/Printer and Faxes/File/Server Pro...more >>

ISSUE (reposted) =========================== Can someone please explain to me why I can't get the MS Word Interop assembly to work in my VS2005 project? For many people, they say they add the reference and it works, however when I add the reference the application can't find it. Not sure w...more >>

Hello everyone. I have an html page posting a form to my ASPX page and no matter what I try the Request.Form is always blank when I get it on my aspx page. Anyone have any clues? Scott ...more >>

Hi, Can generics be used to call a static method of a class? The below example gives an error in my generictest class. Anybody know why? class foo { static public void Test() { Console.WriteLine("foo.Test");} } class GenericTest<T> { public void CallTest() { T.Test();} } ...more >>

I have a small ClickOnce application which communicates with the server it loaded from. When I created the ClickOnce app, I added a Web Reference to a .asmx file on the server. The app then uses this reference to make calls to the server. That all works nicely. However, at deployment, every se...more >>

Hey, (Sorry if the thread has been posted twice!) I'm using the System.Web.Caching.Cache object in my Win App and basically, it's great! I use a sliding expiration TimeStamp to the object I put in the Cache. When I try and get the object after it's sliding expiration time I get null (as exce...more >>

Hi, I have a simple visual basic 6 program that calls a function in a class written in C# assembly. Running executeable directly gives me no problem, debugging VB6 program is also working fine. However, when I try to debug C# assembly with VB6 program, VB6 program simply crashes upon trying t...more >>

I am developing an application to send emails from within a company using MS-Exchange. I know next to nothing about Exchange. Does anyone know how to get started in this? Can I use the SendMail from .NET? Thanks Wade ...more >>

Hi all, let say that my string is : /// <author> aaa /// <author> bbb /// <author> ccc 1. how do i match all the authors except author aaa ? 2. how do i append the string "2006" to the authors names found in #1 ? Thanks. ...more >>

Hi, When working with high display resolution it's sometimes preferable to increase the general font size using control panel-> display properties-> settings -> advanced -> general -> Display -> DPI setting. However I find that my form area doesn't scale correctly with this settings. Butto...more >>

Hi I am stuck with a problem Can anyone help me out from this... I am printing a report on pre-printed continue paper using dot-matrix printer using vb.net. Data is printing on all the locations. But After printing first page it increase paper 3cm vertically/Height so on second page act...more >>

I m using HTTWebResponse which is running smoothly on my system which is behing a proxy server. When I run the application with Live IP it gives "HTTP Protocol violation error" I can't use 'useUnsafeHeaderParsing' because it is not recognized by framework without sp3. I have urlencoded m...more >>

My problem is that values in the bool column of a datagrid are only being updated to the database once the focus of the bool cell is lost. This is completely counter-intuitative. When a user clicks on a bool type cell in a datagrid and sees a check mark put in / removed, then he/she would expect...more >>

Here's my understanding as of now. If I were writing a function bool IsValidContact(Offerer objOfferer, Accepter objAccepter, TermsAndConditions objTermsAndConditions); Before writing the function, I'd enlist all the conditions that must be met for a contract to be valid. Something alon...more >>

In web app development you can use session, cookies, querystring to reference variables you set in a previously in the app. My question is how does windows let you access a variable value you set in the previous form. i am perplexed. I thought you did it somehow with properties, but i don...more >>

Hello Experts, I'm creating a bitmap object like this: Bitmap myImage = new Bitmap(1024, 1024, System.Drawing.Imaging.PixelFormat.Format24bppRgb); But when I invoking the function myImage .MakeTransparent() (with or without parameters), the myImage.PixelFormat changes to Format32bppArgb. ...more >>

In Windows app development, how can you carry a property value from one form to another? In web development, you would use session. I have been trying to use properties. I have a class with a property of type int. In form 1 i set my property as e.g. 20 but then when i check the value of...more >>

Hi all, I am developing one web service in c#. What i am doing is processing some heaving data in one of the method of web service. In my client i am calling one web method which is doing heaving processing and what i want is to provide cancellation functionality for this web method. So ...more >>

I have a buffer of byte[] that contains a raw data of a 1 byte-per-pixel image data. I need to convert this buffer to a Bitmap of Format32bppArgb and to a Bitmap of Format24bppRgb. Can anybody tell how to do it? ------ Thanks Sharon...more >>

Hi, One of our bigger clients requested to have a phone automation option for our CRM product (developed on C#) as they are using it now with ACT CRM. Unfortunately i don't have much info on how do they use it and no way i could get to tehir place as they are in Europe (i'm in US). All i know...more >>

Hi everyone :-) I want to have a button that has the ability to be sunken when clicked. Checked would be correct name. Very similar to a toolstripbutton, but a control. How do I do that? Is there a way to do it? Thanks. ...more >>

ORM.net is under GNU licence now? if I use ORM.net to develop application, I need to open source my application also ? ...more >>

Hi guys, Im trying to use the PrintDialog stuff in my graphics package to allow people to print their photos. It all works fine and the user can specific margins and photo size, but I can't get the preview to show the margins. I must be setting them correctly because they print ok, but no...more >>

Hi, In my C# windows form application, we can open and close an EXCEL file. However, in my Windows XP's task manager, there is a EXCEL on the task list. If I open and close that EXCEL file several times, then there're several EXCEL on my XP's task list. My question is will this cause any pro...more >>