C# Discussion Boards - CodeProject

zaboboa10-Aug-05 8:14

10-Aug-05 8:14

Hello,

If I have a messagebox with two buttons OK, and Cancel. How do I catch which button the user presses?

Thank you

Re: MessageBox Question

Judah Gabriel Himango10-Aug-05 8:28

Judah Gabriel Himango

10-Aug-05 8:28

DialogResult result = MessageBox.Show(...);

if(result == DialogResult.OK)
{
}
else if(result == DialogResult.Cancel)
{
}

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Re: MessageBox Question

zaboboa10-Aug-05 9:55

zaboboa

10-Aug-05 9:55

Thank you
That's perfect.

Updating form with text during long process

Glenn E. Lanier II10-Aug-05 7:25

Glenn E. Lanier II

10-Aug-05 7:25

I have a form with a label (name = labelStatus) that I would like to update during a lengthy process (e.g. while scanning all files on drive - show filename).

<br />
void TimeConsumingMethod()<br />
{<br />
   string fileName = "C:\Temp\A.txt";<br />
<br />
   // Do some stuff here<br />
   labelStatus.Text = string.Format("Searching {0}", fileName);<br />
<br />
   // Do more stuff here<br />
<br />
<br />
   // Finally finished.<br />
}<br />

It doesn't seem to update the label until the method finishes. I've tried to invalidate the form after setting the new text, but that really doesn't make a visible difference. How can I accomplish this?

--G

Re: Updating form with text during long process

zagzagzag10-Aug-05 8:01

zagzagzag

10-Aug-05 8:01

As far as i know you have to update the label your self:

labelStatus.Text = "The stuff you want";
labelStatus.Update();

or:

labelStatus.Text = "The stuff you want";
labelStatus.Update();
this.Update();

and finally you can write the following before the lenghty process starts:

Application.DoEvents();

Hope it works!

Re: Updating form with text during long process

Glenn E. Lanier II10-Aug-05 8:34

Glenn E. Lanier II

10-Aug-05 8:34

zagzagzag wrote:
Hope it works!

Big Grin | :-D

Thanks -- this worked perfectly.

Focus on tree when right-clicked

Nagesh Kurella10-Aug-05 7:23

Nagesh Kurella

10-Aug-05 7:23

How can I set the focus to the tree node when it is right-clicked?

Re: Focus on tree when right-clicked

Judah Gabriel Himango10-Aug-05 8:29

Judah Gabriel Himango

10-Aug-05 8:29

Listen for the mouse down event. In the mouse down event handler, check if the right mouse button is down. If it is, call treeView.Focus().

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import c# dll in a vc mfc project

MihaiChioariu10-Aug-05 7:07

MihaiChioariu

10-Aug-05 7:07

Hello,

I want to import a c# dll in a vc mfc project. can you help me?

Thanks,
mihai

Re: import c# dll in a vc mfc project

Mohamad Al Husseiny10-Aug-05 8:47

Mohamad Al Husseiny

10-Aug-05 8:47

As You Can Use Unmanaged Com Component in .Net by TlbImp.exe You can access .Net dll by
Using tools such as TlbExp.exe and Regasm.exe
Type Library Exporter (Tlbexp.exe)[^]
Assembly Registration Tool (Regasm.exe)[^]
MCAD

Re: import c# dll in a vc mfc project

MihaiChioariu11-Aug-05 0:27

MihaiChioariu

11-Aug-05 0:27

hello

Thanks for ideea. With a tlb file i can import it in a vc mfc project. At compile it create a tlh file (something like a .h file). there i can see my class (from dll), but the problem is that i can't see the methods for this class. how i can use this methods?

i test same with a vb activex dll. there i can import dll directly (don't need tlb file), he create same tlh file, but there i can see class and methods, too. i can used them and it's work.

for c# dll how can i use the methods?

Thanks,
Mihai

Playing Videos with C#

allenmpcx10-Aug-05 6:35

allenmpcx

10-Aug-05 6:35

Hello, I am "new" if you will to C# (it was suggested to use it, however I am very familiar with C++ and .NET) and I was wondering if there is a way to play a video that is embedded as a resource. I searched the web and found DirectShow, however this requires a path name. I would like a video to be wrapped up inside the .exe. Is this possible? Confused | :confused:

Mike - I love to program!

Re: Playing Videos with C#

Judah Gabriel Himango10-Aug-05 7:00

Judah Gabriel Himango

10-Aug-05 7:00

You should be able to embed the video as a binary resource. VS2005 allows you to put any resource into the application from the IDE, which you should be able to get it out using as a stream of bytes from code.

Once you've got a stream, the Windows Media SDK or DirectShow, or ManagedDirectX, or similar should be able to play the stream.

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Re: Playing Videos with C#

allenmpcx10-Aug-05 7:09

allenmpcx

10-Aug-05 7:09

Unfortunately, I do not have VS2005, just 2003. Would it still apply?

Mike - I love to program!

Re: Playing Videos with C#

Judah Gabriel Himango10-Aug-05 8:27

Judah Gabriel Himango

10-Aug-05 8:27

Yeah, it can still work. As far as I remember, it was a little difficult getting this to work with 2003 and 2002. Try searching code project or the web for binary resource or embedded resource.

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Re: Playing Videos with C#

allenmpcx10-Aug-05 8:30

allenmpcx

10-Aug-05 8:30

I can get the file into a stream using reflection, however I can not find a function that will play a video from a stream, but rather from a path name. Is there something I need to download. Thank you very much for your help.

Mike - I love to program!

Re: Playing Videos with C#

Judah Gabriel Himango10-Aug-05 8:49

Judah Gabriel Himango

10-Aug-05 8:49

I really don't know, as of right now, the .NET framework doesn't provide any way to play video using native .NET, AFAIK. You need some 3rd party software like the ones I mentioned in the previous post. From there, it's a matter of finding the appropriate streaming methods.

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Re: Playing Videos with C#

Anonymous11-Aug-05 3:23

Anonymous

11-Aug-05 3:23

In the end of the day you can just save the stream to a file in a temp folder, play the file and then delete it.

NumericUpDown Control and the tab key

Yigal Agam10-Aug-05 6:00

Yigal Agam

10-Aug-05 6:00

Hi,

I have a problem. When I change the value in a NumericUpDown control and then leave the control using the tab key (without hitting enter), the change takes effect, but the ValueChanged event doesn't fire. Any way around this?

Thanks

Re: NumericUpDown Control and the tab key

Dan Neely10-Aug-05 7:08

Dan Neely

10-Aug-05 7:08

IIRC there's a loose focus event, use that to do whatever you need done.

Dataset

webhay10-Aug-05 5:42

webhay

10-Aug-05 5:42

Hello All,

I have DataSet and i need to change the values of some rows in the dataset i used

DataSet.Table[0].Rows[0].ItemArray[0] = newValue;
DataSet.AcceptChange();

But it didnt work

Please help
Hay

Re: Dataset

Alomgir Miah10-Aug-05 5:57

Alomgir Miah

10-Aug-05 5:57

try

DataSet.Table[0].Rows[0][0] = newValue

The ItemArray will be set internally

Live Life King Size
Alomgir Miah

Re: Dataset

webhay10-Aug-05 6:05

webhay

10-Aug-05 6:05

Thanks Alomgir so much it is working now.

Best Regareds
Hay

Timeout for diagnostics.process connection to remote host???

Colin Wheeler10-Aug-05 5:42

Colin Wheeler

10-Aug-05 5:42

Hi all,

Using the following code under Visual Studio 2005 with .NET beta 2, I am looking for a way for the connection to timeout (in say 5 seconds) if it can't contact the host specified. Any ideas?
---
public string m_GetProcessList(string v_host, string v_processname)
{
string sendback = "";
Process currentProcess = Process.GetCurrentProcess();
Process[] remoteAll = Process.GetProcesses(v_host);
int v_processcount = 0;
string v_processIDs = "";
foreach (Process v_process in remoteAll)
{
if (v_process.ProcessName.ToLower() == v_processname.ToLower())
{
v_processcount = v_processcount + 1;
v_processIDs = v_processIDs + v_process.Id.ToString() + v_process.StartInfo.Arguments.ToString() + ",";
}
}
sendback = v_host + " - " + v_processname + " - " + v_processcount.ToString() + " - " + v_processIDs;
return sendback;
}
---
Thanks all.

Colin Wheeler
Consultant

How do I load a new form and access varables from it?

Mutty10-Aug-05 5:27

Mutty

10-Aug-05 5:27

I want to bring up a second form to adjust variables on the first form. Any help appreciated! -mutty

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