I am debugging an example and have a breakpoint set: int lhs; lhs = int.Parse("43") // break point here I can execute the line with the breakpoint and lhs gets the value 43 So why when I go to the immediate window do I get this: ?int.Parse("43") error: identifier 'int' out of scope ...more >>

hi can anyone give me a small example of using the cryptography api. where can i apply this in a basic sense. kind regards Juzan ...more >>

I have a TreeView component in my application. It is setup so that you can add a node, and after you edit it, you can press enter and it will create a new node directly under it. This works great, except that it causes some sort of sound event to occur. I went through the windows event so...more >>

How do I fill a combobox from a select query returning a list of names. I'd also like to refresh this list when an action (LIke adding a new value to the list occurs. ...more >>

anyone has idea? please help thanks; ...more >>

Hi, I would like to know what OOP/OOD/OOA with C# books would you recommend/suggest ? Thanks a lot in advance ! ...more >>

Hello I'm new to C#. I need a type with radix (or base) 3 (that is it counts 0 - 1 - 2 - 10 - 11 - 12 - 20 ...) How do I construct that in C# ? Thanks in advance Eigil ...more >>

submit articles www.telysium.org ...more >>

....or am I just dense? As a starter, I want to put a control on a Windows form that will display the contents of a table in an Access database, and allow me to edit rows & add new ones. It seems to me that this was a no-brainer in VB pre-.NET ('though I'm not a VB programmer). I would have...more >>

I've got a problem. Not sure if it's a problem in the code or in my understanding. I have a class that contains a delegate. The delegate is assigned to a simple method in a form that assigns the values of a series of strings to an instance of the label control sequentially. // ****** publi...more >>

C# does not offer the keyword "Friend" (C++ has it). Is there anyway that I can emulate this ? namespace myclass{ public class A { protected virtual void Add() { } } public class B:A { private StringCollection MyCollection; ...more >>

I need to check if the user put some invalid char when he name a file to save. Exists any function that check this? (prevent / * ; etc) ...more >>

Hey, just going through "C# for Java Developers" by Jones&Freeman and I've got a quick question about one of their examples. They give a simple example of converting an instance of a value type to an object: // Box an int variable int myInt = 100; object myIntObject = myInt; System.Console....more >>

How do I access oleDbConnections, oleDbDataAdapters, and data sets that are one one windows form, from another windows form Basically what I've done is add a new item of a data set to a project, drag a database from the server explorer, and define the relationships. I now want to access, populate,...more >>

Hello, How can I display the first char in uppercase? (This is the first letter of the dayname) Here is my currect dataformat: DataFormatString="{0:ddd. dd MMM. yyyy}" Thanks! ...more >>

NO,thanks . i think u have mistakened my idea. i have defined a external function from gdi32 which is GetPixel(handle hDC,int xcoodinary,int ycoodinary). it return a COLORREF value. now i need to use the COLORREF value in C#. but i dont know what is the coresponding type to COLORREF in C#. ...more >>

Hi I'd like to know whether it's beneficial to multi-thread web request calls Experimentally, it doesn't look very helpful. I measured the time it takes to make request to a certain website from a C# application, and doing it serially 10 consequtive calls took about 20 seconds (2 seconds each, a...more >>

Hi, I'm wondering if it's possible to add a \n or \r\n to an XML comment. And if so, how? Some comments can get a bit long and it looks messy in the object browser. TIA, Nico Vrouwe ...more >>

hello, I'm starting planning on a server/client web based application and I'm wonder the best way to go about this. I haven't used asp.net but that sounds like it's what I need. One major thing I'm going to need no matter what I use is a secure internet connection. Now I'm assuming savvy w...more >>

Hi, using DLLImport as follows : [DllImport("msvcrt.dll", CharSet=CharSet.Ansi, CallingConvention=CallingConvention.Cdecl)] public static extern int scanf(string format, ref int s1); then using : int sum=0; scanf("%d", ref sum); Console.WriteLine(...more >>

this is driving me crazy. i hear so many people telling me page templates are easy, so why can't i get it to work in a nice way. i just looked at the following site to find out how to implement page temlates (http://authors.aspalliance.com/mamanze/articles/?path=pagetemplate3). i thought it...more >>

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Hi I'm developping a screen capture utility in C#. But I have the following problem : system wide hooks are not supported by .NET, and I'd like my utility (resident in systray) to use the F9 key to perform the capture. So, how could I do that in .NET without a keyboard hook ? Thanks ...more >>

Hi, How can I show next preview data using ADO on asp.net c#.. Thanks ...more >>

Hi, Can anyone recommend an HTML to PDF converter, specifically one which supports CSS? I've been looking at HTMLDOC from EasySW (http://www.easysw.com/htmldoc/) but that doesn't support CSS - there's talk of an upgrade which will, but the manufacturers have no idea when or even if this will ...more >>

Hey, I have 2 forms. On the first form, there is a function that displays a lot of data, with a lot of values, that I store in variables. So what I want to do is use the info that I store in variables on the first form, and insert it into the second form. Like this... (Not my real code) For...more >>

i have a structure like public struct structure { public int net_id; public string net_desc; public string net_mail; public string[] update; public string[] select; } i want to create an structure array whose length is undefined... but i keep adding new...more >>

Hi, This what the documentation says about out-parameters The value of an out argument will not be passed to the out parameter. But ... static void F(out int i) { i = 9; ==> set breakpoint here Console.WriteLine(i); } static void Main() { int i = 10; F(o...more >>

Hello there, When a Windows form change the culture, how do I refresh/redraw/recreate the current form so the user gets the form in the newly selected culture? Fx. changing culture from English til Danish. Then I would like to have the Windows form change text on controls to Danish without h...more >>

I found the following way to convert from double[] to byte[] and I wonder if there is an easier one And I have another question I can see from the value in canFloat if my Data can be stored in Float Data If I want to do this and only convert 4 of the bytes in the double wich are the right ones? h...more >>

Hi Folks I got a strange Error when executing a Stored Procedure, can Somebody help me This is my Error Message Server Error in '/OMAS' Application ------------------------------------------------------------------------------- Object must implement IConvertible. Description: An unhandled ex...more >>

Greetings all! I've hit a brain bump here and need a boost... given this analog clock code (just the hour hand here), where am I missing the math to move the hour hand along PAST this point? Using this code, it's drawn AT the hour position, but not PAST it as a real clock does. I'm thinking too ...more >>

Hi I have some troubles with a computed column in a DataSet I have a typed DataSet ds, which is received from a WebService ws. The Table BestillingslisteLinie has one child-relation to the table BestillingslisteLinieKommentar My computed column is added to the table BestillingslisteLinie like thi...more >>

Is there a way to highlight the whole row in DataGrid? I want to select a whole row clicking anywhere on that row. I also want to prevent the user from selecting individual cells. So when he clicks on the row the cell does not get activated. Can someone help, please? ...more >>

I am writing an application where I need to create hyperlinks to various documents on the network. Program will provide an OpenFileDialog for the user to select a file. Then I need to show the selected path as a hyperlink. What is a way of doing that? Thanks. ...more >>

I have a class with a non-blocking client socket open, but I don't want to poll it for data, I want to raise an event when data arrives. Is that possible, or does the Receive method have to be polled in order to know when there is new data? The socket doesn't appear to have any events of it's...more >>

I need to add the new, load, save, delete,, pictures to my buttons. Where are stored the IDE pictures? Are in some dll? How can i added to my buttons? ...more >>

Marcin wrote : > e.g. If you define DataTable object, You can load it with IDataReader > values and then set its table as a DataSource of DataGrid. Ok, i'm a beginner with C# ... i have tried this : connection = new OleDbConnection(connStr); connection.Open(); OleDbCommand myComma...more >>

I am building a text parser to scan a text document for predefined tags. I am using the RTB to display the contents of the plain text file in read only mode. I parse the file and get a list of tags which I can select from a list box, then using thier positions and highlight them in the RTB. Ho...more >>

hi all... how could i make a exe that searches the hd for a specific file that can be in random folders, and delete it when find it. how can i accomplish that in c# ? any link ? source code to deal with file manipulation ? thanks ! ...more >>

I haven't been able to programmatically access highlight colour properties un a treeview control? Is it possible? thanks, Juan ...more >>

I am having a problem converting one line of code in this VB.Net Function. I have marked the line below in its context. In the converted C# code I am getting a error stating "Input string was not in a correct format". Is there anyone out there that can shed some light on fixing this line.. I h...more >>