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Use the static property StartupPath of the Application class.
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Simply: Environment.CurrentDirectory. Its a string so you can feed this to other objects like DirectoryInfo and Directory.
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While I'm sure you probably mean what the other reply suggested (Application.StartupPath), "current path" is not always the same directory as the application. It is the current working directory, and can be set on shortcuts to something different, or if you are in a command prompt in a different directory and type the path to the application. The directory you're in is the currenty working directory. It's important to be mindful of this fact.
To get the current working directory, you can get the Environment.CurrentDirectory. If you want the application directory to be the current working directory anytime your application starts, set this property like so:
Environment.CurrentDirectory = Application.StartupPath;
Microsoft MVP, Visual C#
My Articles
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Need to create and use custom attribute in Active Directory user account via LDAP.
Active Directory server works on Win2003 Enterprise.
How I can do it?
Thanks.
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The articles that Mazdak's search lists don't explain how to add a custom attribute to the Active Directory schema, which is what you appear to be asking. For information on that, see How to Extend the Schema[^] on the MSDN. To get this schema extension attribute, you can use its name in the DirectoryEntry.Properties dictionary property.
Microsoft MVP, Visual C#
My Articles
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Heath Stewart, thank you.
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I have a class that is so long that I would like to split it into two or more files. Like keeping public methods and properties in one file and private methods and variables in another. Possible ?
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Not yet. The functionality for this will be available in the next release though. (So, it looks like you'll have to wait a while)
"You can have everything in life you want if you will just help enough other people get what they want." --Zig Ziglar
Coming soon: The Second EuroCPian Event[^].
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Hi
How do I change the Color of the client area of a form in MDI?
Thanks
Riaan
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I'm sure you mean the client area of the MDI-Form. You have to use the Paint Event of the MDI-Form, get the rectangle of the Dark Grey Area and fill it with your Color.
Stefan
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Hi,
does any one know the links to source code about audio or video chatting software developed in c#.
Thanks in advance
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http://www.codeproject.com/useritems/direct_show_-_playa.asp
I hope that useful for you.
Mr Duc Linh Nguyen
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here's the solution:
http://www.banasoft.net/AVPhone.htm
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Is there any method of embedding VC++.NET code in VC#.NET Project and using the different functions declared in VC++ code in VC#.
CHEERS
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Create a .NET assembly using Managed C++, wrapping any unmanged code into a managed class. In the C# project, reference the newly created assembly, and you'll be able to make full use of the MC++ managed classes.
Take a peek at Nick Parker's article[^] to get your started, or look through the list of Managed C++ articles here on CodeProject. There are some good examples there.
Hope that helps. 
--Jesse
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Using remoting, when an Image?Bitmap is transfered, it is recieved in "NativeImage" format, from which the Image cannot be got back.
Is there any other method of transfering Image using Remoting.
CHEERS
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Typically, you serialize this to a byte[] array which marshals with no problems. This is also true for XML Web Services.
Another, much faster way (that doesn't require serialization, which will degrade performance) is to use DIME and the Web Service Enhancements (WSE), though you could implement DIME yourself pretty easily since the WSE isn't supported on Windows (only on Windows NT is it supported).
See DIME: Sending Files, Attachments, and SOAP Messages Via Direct Internet Message Encapsulation -- MSDN Magazine, December 2002[^] for a conceptual overview and links to many resources (including the DIME specs), as well as a link to the WSE[^] which already includes these extensions and can be integrated with .NET Remoting and XML Web Services rather easily (especially the latter).
Microsoft MVP, Visual C#
My Articles
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I have a datagrid and a dataset...and naturally the source of the datagrid is a table in the dataset. When I type a value into one column, I would like to update the value of another column. For instance, if I was keeping track of items purchased in my table, and I enter the Quantity and Price in respective cells, I would like the next cell to calculate this value and show immediately. I have an expression string to do this in my dataset table, but the datagrid doesn't seem to add the row until I have physically scrolled through all of the columns in the row...so the Total cell doesn't get updated until I actually navigate through it and into the next row. Can I put an expression on the column in my datagrid somehow, or manually do the calculation and set the value into the correct cell? Thanks for the help on this.
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Do you mean DataTable.DisplayExpression and DataColumn.Expression property?
Mazy
"I think that only daring speculation can lead us further and not accumulation of facts." - Albert Einstein
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Following is the VC++.NET code for the Hook Procedure passed as a parameter for the "SetWindowsHookEx" API call. This code was downloaded from http://msdn.microsoft.com/msdnmag/issues/02/09/CQA/default.aspx
Can some one give the equivalent code for the following in C#. I tried a lot to do so but all in vain.
LRESULT CALLBACK MyTaskKeyHookLL(int nCode, WPARAM wp, LPARAM lp)
{
KBDLLHOOKSTRUCT *pkh = (KBDLLHOOKSTRUCT *) lp;
if (nCode==HC_ACTION)
{
BOOL bCtrlKeyDown = GetAsyncKeyState(VK_CONTROL)>>((sizeof(SHORT) * 8) - 1);
if ((pkh->vkCode==VK_ESCAPE && bCtrlKeyDown) ||
(pkh->vkCode==VK_TAB && pkh->flags & LLKHF_ALTDOWN) ||
(pkh->vkCode==VK_ESCAPE && pkh->flags & LLKHF_ALTDOWN) ||
(pkh->vkCode==VK_LWIN || pkh->vkCode==VK_RWIN))
{
if (g_bBeep && (wp==WM_SYSKEYDOWN||wp==WM_KEYDOWN))
MessageBeep(0);
return 1;
}
}
return CallNextHookEx(g_hHookKbdLL, nCode, wp, lp);
}
Even a sample project which blocks all Task Keys that is Alt+Tab, Ctrl+Esc, Alt+Esc etc..
CHEERS
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You need to P/Invoke the necessary native APIs, such as SetWindowsHookEx. There are several articles on this on CodeProject, including Using Hooks from C#[^]. The implementation is pretty much the same, although you'll need to find the values for the various consts which are defined in winuser.h in the Platform SDK. Just define these as const int in your code.
Microsoft MVP, Visual C#
My Articles
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I have gone through all the articles in CodeProject reagrding hooks. I have understood quite something regarding hooks. The problems i have are:
1) What should the Delegate function should return so as to Block the keypress or not.
2) As given above, in VC++, the author has defined a structure called KBDLLHOOKSTRUCT which he is using to find which key was pressed by type casting LPARAM to this structure. I am not able to do that and hence forth not able to find which keys were pressed.
CHEERS
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You don't need to cast it from the LPARAM parameter. Just include ref KBDLLHOOKSTRUCT paramName as the parameter, which automatically marshals the struct correctly. You can find more information about P/Invoke by reading Consuming Unmanaged DLL Functions[^] in the .NET Framework SDK. If you read the C# article and look at the sample source, the author would've implemented everything you need to know. See the Platform SDK for return values and other information in the documentation for the SetWindowsHookEx API and related documentation.
Microsoft MVP, Visual C#
My Articles
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I got a question:
Q: You use Visual Studio.net to create a windows form named Form1, you add a custom control named BarGraph, which displays numerical data. You create a second custom control named DataBar. Each instance of DataBar represent one data value in BarGraph.
BarGraph retrieves its data from a Microsoft SQL Server database. for each data value that it retrieves a new instance of DataBar is added to BarGraph. BarGrahp also includes a Label control named DataBarCount, which displays the number of DataBar controls currently contained by BarGraph.
You must add code to one of yor custome controls to ensure that DataBarCount is always updated with the correct value.
What are two possible ways to achieve this goal?(Each correct answer presents a complete solutins.Choose two).
And I got the so-called two correct answers:
A1:Add the following code segment to the ControlAdded event handler for BarGraph:
DataBarCount.Text=this.Controls.Count;
A2:Add the following code segment to the constructor for DataBar:
this.Parent.DataBarCount.Text=this.Controls.Count;
I don't understant why?
who can explain why they are right????
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