Hi, 1. How can I present diffrent image type (jpg, bmp, bpm..) 2. How can I present video file as a picture Can I fo it by a built in function (in C#)? *** Sent via Developersdex http://www.developersdex.com *** Don't just participate in USENET...get rewarded for it!...more >>

If you define a variable when you declare it, does that mean that you can never change the variable? int myVar = 5; Where as maybe int myVar; myVar = 5; and later on somewhere I could then say myVar =6; ? Does that make sense. ...more >>

Is there a way to change the default directory of the command prompt? Currently, when I go run>cmd.. it starts in c:\documents and settings\my username Same with if I use the vs.net cmd prompt. I'd like to change it to something more specific so when I go to the cmd prompt, I don't have...more >>

I would like some way to determine every place in my solution where a given method of a given class is called (not defined). Preferably I would like to know the source file name and line number of each method call. Is this possible using reflection or some other method? Thanks very much. ...more >>

Hi, Having a bit of a problem with the Progress Bar and Timer component. Basically, when I execute a menu option, I need the progress bar to start working. I have managed this and start the timer at the beginning of the function with Timer1.Start(); The problem seems to be stopping the...more >>

How come .Net applications use so much memory? Every application I compile uses at least 10 MB of memory, even the ones consisting of only a form and nothing else. If I minimize them though the memory usage drops to a couple hundred KB. Why? Is there anything I should to to prevent this? I hav...more >>

Hello, I work on many asp.net projects, so i made a general dll that is not strong named. To use this dll in a project, a simply copy the dll in the bin directory and references it using "browse...". This works fine, but i want to avoid copying the dll in each bin of my projects. So i creat...more >>

MSDN shows the option: textBox1.Numeric = true; as a way to check that the input in textBox1 is numeric. I cannot get it to work. How should it be done? Alternatively: looking at Validation in MSDN I see a check for an Internet Address, I cannot convert the example to a check for Numeric Inp...more >>

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hi friends, I necessary a example of use checkbox in datagrid, help me? ...more >>

hello, i have got a panel with several controls in it, including a button which is disabled. I want to enable this button whenever, any of the controls inside the panel changes. e.g. someone has typed in the textbox, the datagrid has been edited,(a user edits or inserts a new cell)...more >>

In my Windows form, I have a discrepancy between what the CrystaReport viewer displays and what the dataset contains. The Report displays data from three fields from same table but the reportviewer displays all the data in the table regardless of the select I run (in this case, the select retur...more >>

In the good old days , i had a class that had 30 functions (let's say) There was a single include(*.H) file and i could have several implementation(*.CPP) files The reason for doing this is to have some functions grouped so it is easier to read/manage them... Maybe several developers work on th...more >>

Hey all. I've got a legacy COM dll that I'd like to use in my multithreaded C# app. Problem though is when I create several instances of the interop object and start them on their own threads they always seem to run synchronously. I've boiled down the code to a simple "lab" experiment below....more >>

Hi I have a DataGrid that I am using to display a .xml file (that has a schema in a .xsd), like this:- ds.ReadXmlSchema(sDataPath + "Data.xsd"); ds.ReadXml(sDataPath + "Data.xml", XmlReadMode.InferSchema); grdXXXX.DataSource = ds; FormatGridColumns(grdXXXX, ds.Tables["XXXX"...more >>

Hi, I have created a tlb file in .net to use in VB6 application. this application works fine in my Pc which has development environemnt. Now i want to deploy this VB6 exe to other fresh machine. I have installed .net required framework and my other .net projects run fine. but this VB6 ...more >>

Hey, Having a few problems using threads in C#. In the msdn documentation, mutual exclusion is only discussed when dealing with threads that all execute the same method. What's the actual meaning of the lock function? All I want to do is keep other threads from entering their critical ...more >>

We have applications that must connect to oracle databases. Is there a way to connect using .NET that does not require installation of the Oracle client on each PC? I'm pretty sure java apps do not require the Oracle client. I'm hoping .NET has some way of doing this as well. If not, does...more >>

Hi, I have used the ISerializable interface before and the code below worked fine. Until I derived it from CollectionBase. The code will still serialize and deserialize the properties in this class and properties derived from this class but will not serialize or deserialize the properties in Col...more >>

Hi, I've found a strange problem regarding Debug.WriteLine and Thread in suspended state. Create a thread, start it and make it suspended. Then try Debug.WriteLine - it will start 100% CPU usage while not blocking the main thread. Code is below (create a from with two buttons). Steps: Clic...more >>

Hello How can I use an other key then TAB to move from one textBox to another?? Torfinn ...more >>

Just curious... Is there a way to remove the header for a tabpage? Thanks. ...more >>

Hi, I currently have a control that is on a form [FormA] and I want to pass that exact instance of the control to another form [FormB] (a child form that appears on a button click). The control has state, etc. that works with both forms. In my button click on FormA, I take my control and p...more >>

I have ordered the book .NET Framework Solutions, In Search of the Lost Win32 API by John Paul Meuller which I think will help answer some of my questions I have regarding making custom MessageBoxes, but that isn't going to be here for a few days. So, I thought I would ask you guys how to put on...more >>

I'd like to do the following in C# and prefer using tcpclient rather than raw sockets... Connect to a unix box Login run date +%H%M%S retrieve the response. That's it, nothing more. This shouldn't be too complicated, I thought... I have yet to find any examples of being able to do thi...more >>

I mean those use C# to implement function and button handler? if can , can anyone show me a simple example or reference homepage? Because i used to write in "function" , but i wonder how should I write in C# with a OO concept. ...more >>

Missing the obvious here..thanks.. I need to open the file exclusively for on entry like this: FileStream stream = null; stream = File.Open(fiPath, FileMode.Open, FileAccess.ReadWrite,FileShare.None); // then I open the file stream System.IO.StreamReader Tin = new System.IO.StreamReader (st...more >>

Hi, to be use with SQL server database 1- From window form textbox object From this assignement, txtTOTAL.Text="0.00m"; How do you convert back to decimal type ? How do you assign a default datetime value to it ? How do you convert back the text enter by user into datetime ? txtDATEF...more >>

We're installing VSS to use with VS.NET for our team. How does this work -- will people check out the entire project, or only one file at a time? If they only check out, for example, a single page and it's code-behind, how are they able to test it? If they check out the entire project, then no o...more >>

Hello, I have a datagrid with 3 columns, however when i tab between the cells, I do not want to make the 3rd column tabbed. so it immediately jumps to the 1st column of the next row. Is there anyway to do this? Thanks, Doug ...more >>

I have one project which depends on several other projects. I have incremental property set to "true" for all projects so that if nothing has changed within any of the other project direcories, it will not try to rebuild them. Within VS, it works as expected yet via the command line usin...more >>

Gretings... I have written a Windows Service that accesses a Web Service. Both run fine on my development machine.... After installing both the Windows Service and Web Service on my staging server, I get the following error... Error Message: System.Web.Services.Protocols.SoapExcep...more >>

When I had this code commented out, everything ran fine. But as soon as I uncommented it, it nuked the databindings for every field bound to the dataset. Does anybody know what's wrong with it? try { if (dataSet11.MyTable[0].stringfield1.Length == 0) check1.Checked = true; else chec...more >>

Hi All; I have one server to which clients are connected to via TcpChannel. I start server on one host and establish a client connection from another host via tcpchannel. On client, using activators, I try to invoke one function on server side using channel After first successfull fucnti...more >>

Let me explain what I would like to do. I have created my own object which is able to execute or do something. Now I created a few instances of that object and put them in the tree view. There is no problem for me to display them in the tree view, but as far as I know it only capture them as...more >>

When I read table from Excel to DataTable object and one of the field's names is with "?" (for example "class?")at the end Select function throws the folowing exception: "... An unhandled exception of type 'System.Data.SyntaxErrorException' occurred in system.data.dll Additional info...more >>

What is the rationale behind the decision not to allow abstract static class members? It doesn't seem like it's a logically contradictory concept, or that the implementation would be difficult or near-impossible. It seems like it would be useful. In fact, there's a place in my code that I could m...more >>

Is there a way in .Net to call a function or web service under a different security context as the one that the user is logged into? For example, if a user calls web service 1 (WS1), WS1 is now running under the user's security context. Is there a way for WS1 to call another web service,...more >>

I was very excited to find out that .NET supported multi-threading. I have long had issues with Forms freezing up while large datasets (recordsets) were being collected or with various looping operations. Yet I spin off separate threads to fill DataSets and do various other operations, and my...more >>

Sorry one of those "C" type transistion questions which I could find no answer for in existing C# text books. In C, I used to use the system function call to execute programs synchronously. To clear the screen, for console based programs, I used to include the following statement in my...more >>

This seems like an easy question but I can't find the answer. How do I open a new browser window from my web application? I want to open the window and run a report in that window. Thanks, Richard Salit...more >>

I'm trying to find out the amount of memory used by a data structure (Hashtable) in a program. If I look at the values for "Mem Usage" and "VM Size" under the processes tab in the Windows Task manager, the size increase seems to alot greater than if I just add up the key and the element (i...more >>

Hi, I have an API written in C that came with some graphics cards we are going to use in a project. I need to write a small application where this API is to be used, and I decided to try out C#. The API is imported by using the [DllImport("somedll.dll"- method. Now, the function in the...more >>

How to include all the necessary dll's in the window form executable to run it on any machine? C++ had such feature. Thanks...more >>

Hi, Is deep serialization possible using XML. Know any good tutorials?. By deep serialization I mean the ability that an object being serialized automatically serialize its members. E.g Class A { public string x; } Class B { public string y; public A a; } When seriali...more >>

Hi, I'm using a winsock active-x component in a C# program. I can send data using the following: byte[] buffer = new byte[10]; axWinsock1.SendData( buffer); But to receive isn't as easy. The prototype is show below: axWinsock1.GetData( ref object data, object type, object MaxLen...more >>

Hi, I'm trying to log in to a webpage automaticly, the sourcecode for the page is: <FORM ACTION="/login_post" METHOD="POST"> <input type="hidden" name="REDIRECT" value="config.htm"><div align="left"> Password&nbsp; </font><input type="password" name="PWORD" size="20"> <input type...more >>

I found a useful client/server combination for newbies at http://www.msdnaa.net/Resources/Display.aspx?ResID=1375 I typed both of the programs and I ran them on one of my 2 computers (I have a desktop and a laptop PC). Then I copied the client program to the laptop, connected the laptop to m...more >>

I have a form with a list view control, a button control and a main menu with menuDelete item. Any time I am handling a button click event or menuDelete click event I call DeleteItem() function which removes the selected item from the list. If I right-click on my list, I clone menuDelete...more >>