Re: import c# dll in a vc mfc project - C# Discussion Boards

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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().

Tech, life, family, faith: Give me a visit.
I'm currently blogging about: Homosexuality in Christianity
Judah Himango

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.

Tech, life, family, faith: Give me a visit.
I'm currently blogging about: Homosexuality in Christianity
Judah Himango

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.

Tech, life, family, faith: Give me a visit.
I'm currently blogging about: Homosexuality in Christianity
Judah Himango

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.

Tech, life, family, faith: Give me a visit.
I'm currently blogging about: Homosexuality in Christianity
Judah Himango

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

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

Mohamad Al Husseiny10-Aug-05 5:36

Mohamad Al Husseiny

10-Aug-05 5:36

First Is This Variable Public if Yes You Can Do Somthing Like That in Form1

Form2 form2=new Form2();
form2.variableName=value;

If this variable is not public which will be better
You can Write public function in the form and make it set the value of the variable you can code somthing like thar in Form2 which have the variable you wwant to access

public voide SetValue(int i)
{
myVariable=i;
}

and in Form1 You can Write

Form2 form=new Form2();
form2.SetValue(1);

MCAD

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

Mutty10-Aug-05 15:27

Mutty

10-Aug-05 15:27

Sorry, I should have been clearer what I mean. I am trying to open a new form, (Form2), from my main form (form1)

On form2 are numerous controls which should change variables of form1.

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