C# Discussion Boards - CodeProject

Minh Truong13-Oct-03 18:08

13-Oct-03 18:08

Create a class to hold your parameters and that class has the method you want the new thread to start running & pass the instance method as the constructor parm to your thread.

ex:

class MyThreadWorker
{
public string MyParm;

public void MyMethod(void)
{
// Do stuff w/ MyParm
}
}

...

MyThreadWorker w = new MyThreadWorker()

w.MyParm = "WooHoo";

Thread thread = new Thread(new ThreadStart(w.MyMethod));

...

Re: Pass a parameter to a thread

eggie515-Oct-03 14:49

eggie5

15-Oct-03 14:49

Thanks for you help.....

uh... it wasn't working for a while, until I realized there was no thread.Start()....

anyways, it works now. thanks.

/\ |_ E X E GG

Re: Pass a parameter to a thread

Corinna John13-Oct-03 19:55

Corinna John

13-Oct-03 19:55

You repeat a question - you get repeated answeres Wink | ;)

http://www.codeproject.com/script/comments/forums.asp?msg=623616&forumid=1649#xx623616xx[^]

Can C# project complied to win32 dll?

NotProfessional13-Oct-03 15:15

NotProfessional

13-Oct-03 15:15

Got a project on hand, but they need to implement to the Win32 DLL in order
for the call from the framework. Is it possible or means that I have to
switch to VC++. Nightmire if have to do that.

Re: Can C# project complied to win32 dll?

Minh Truong13-Oct-03 18:11

Minh Truong

13-Oct-03 18:11

No, C# project cannot be compiled to a Win32 DLL. You may build a .NET component, then wrap that within a COM Callable Wrapper, but that would still require .NET run-time to run.

Re: Can C# project complied to win32 dll?

Bo Hunter14-Oct-03 13:21

Bo Hunter

14-Oct-03 13:21

This says it can.
http://www.remotesoft.com/linker/

How can i set disk VolumeName in C#(winform)

newpant13-Oct-03 13:51

newpant

13-Oct-03 13:51

i used WMI to get disk c and set disk["VolumeName"] but it's not working???

help me

Cry | :((

Re: How can i set disk VolumeName in C#(winform)

newpant14-Oct-03 4:46

newpant

14-Oct-03 4:46

Help Me!!!!

SOS Sleepy | :zzz:

Re: How can i set disk VolumeName in C#(winform)

newpant16-Oct-03 12:33

newpant

16-Oct-03 12:33

I found a solution

see http://www.dotnet247.com/247reference/msgs/24/122501.aspx

string VolumeName= disk.Properties["Volumename"].Value.ToString();
disk.Properties["Volumename"].Value = "Happy_4th";
PutOptions poptions = new PutOptions();
poptions.Type = PutType.UpdateOnly;
poptions.UseAmendedQualifiers = true;
disk.Put(poptions);

Prompting use for file immediately

Joe Woodbury13-Oct-03 12:41

Joe Woodbury

13-Oct-03 12:41

AFTER my application comes up, if there is no file stored in the registry, it needs to popup a dialog asking if the user wants to search for a file to open, create one or exit.

I can't figure out where to put this dialog. I tried in OnActivated, but I can't close the application from there (unless I'm doing it wrong, which wouldn't surprise me.)

NOTE: THE APPLICATION MAIN FORM MUST ALREADY BE DISPLAYED!

Any help would be greatly appreciated.

When all else fails, there's always delusion.
- Conan O'Brien

Re: Prompting use for file immediately

leppie13-Oct-03 13:03

leppie

13-Oct-03 13:03

if (OpenFileDialog.Show() == DialogResult.Yes)
  Applcation.Run( new MainForm(OpenFileDialog.Filename));

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Re: Prompting use for file immediately

Joe Woodbury13-Oct-03 17:16

Joe Woodbury

13-Oct-03 17:16

You misunderstood, the main form of the application MUST already be displayed.

When all else fails, there's always delusion.
- Conan O'Brien

Re: Prompting use for file immediately

Corinna John13-Oct-03 20:00

Corinna John

13-Oct-03 20:00

You can put the dialog into OnLoad and call Show(). The form is already loaded in OnLoad.

private void Form1_Load(...){<br />
  this.Show();<br />
  <br />
  MyDialog dlg = new MyDialog();<br />
  dlg.ShowDialog();<br />
  //...<br />
}

Re: Prompting use for file immediately

Joe Woodbury14-Oct-03 5:48

Joe Woodbury

14-Oct-03 5:48

That mostly works, thanks.

When all else fails, there's always delusion.
- Conan O'Brien

listview makes debuguer stop working

IsaacB13-Oct-03 11:50

IsaacB

13-Oct-03 11:50

I have a listview that i added with VS.NET, but eventually I want to modify one of the images in the listview when an event handled like this happens

rasClient1.DialStatus += new RasClient.DialStatusEventHandler(DialStatusChg);

the problem is that when im in DialStatusChg and I try to modify the listview like the code below the application stops responding, any idea how can i modify the listview from there, what I'm trying to do is something like a semaphore, so when that event happens, the method below updates the images in the listview

private void DialStatusChg(object sender, DialStatusEventArgs e)
{
try {
switch (e.ConnectionState.ToString())
{
case "AuthNotify":
((ListViewItem)lvLights.Items[2]).ImageIndex = 1;
break;
}
catch (Exception exc)
{
Console.WriteLine(exc.Message);
}
}

Thnx in Advance
Isaac

Re: listview makes debuguer stop working

leppie13-Oct-03 13:29

leppie

13-Oct-03 13:29

Threads, thread, threads...

You will have to use Control.Invoke(object obj, object[] param).

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Excel Automation in C#

AZBugsBunny13-Oct-03 10:20

AZBugsBunny

13-Oct-03 10:20

I want to open an Excel file in my C# application and read the contents . I tried the msdn samples. But most of them deal with writing back values into Excel file.
Also since the range of values that I have to read from the Excel file is dynamic, I would like to know how this can be done.
The foll. is the code that I have written and I get error while instatiating an Excel aplication obejct as it is not able to understand my typecasting.

Excel.Application objApp=null ;
Excel.Workbooks objBooks=null;
Excel.Workbook objBook= null;
Excel.Range range;

string str="";
try
{
// Instantiate Excel and start a new workbook.
objApp = (Excel.Application)new Excel._ExcelApplicationClass();
objBooks = (Workbooks)objApp.Workbooks(1);
objBook = (Workbook)objBooks.Open(DataFile,null,null,null,null,null,null,null,null,null,null,null);

Excel.Worksheet ws= (Worksheet)objBook.Worksheets(1);

if (ws == null)
Console.WriteLine ("ERROR: worksheet == null");

Excel.Range rng=(Excel.Range)ws.Cells(1,1);
str=rng.Value.ToString();

Custom controls in a DataGrid?

Spaced13-Oct-03 10:07

Spaced

13-Oct-03 10:07

Hello ....

I have a form of a TextBox control that has a bunch of limitations on it that I need for an app I'm developing.. works well as its own control on a form, etc..

I'd like to use that control as a column in a DataGrid, but I'm not sure how to 'adapt' the custom control to work in the DataGrid (I'm getting a "Cannot implicitly convert type 'CapsText.CapsTestControl' to 'System.Windows.Forms.DataGridColumnStyle'" message).

Any suggestions on what I need to do to fix this?

Thanks!

How do I access a node in an ArrayList?

adonisv13-Oct-03 8:19

adonisv

13-Oct-03 8:19

The help says the Item function will give me whatever item in the list I want but the complier says there is no definition for this function. What's up with that?

Re: How do I access a node in an ArrayList?

Guillermo Rivero13-Oct-03 9:07

Guillermo Rivero

13-Oct-03 9:07

You mean an element in the arraylist, don't you ?

Can you submit some sample ?

Free your mind...

Re: How do I access a node in an ArrayList?

leppie13-Oct-03 9:45

leppie

13-Oct-03 9:45

You use the indexer "[]"

eg

ArrayList a;
...
object o =a[2];

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axWebBrowser, Tab Control and Memory

JJF00713-Oct-03 8:15

JJF007

13-Oct-03 8:15

Hi!

I want to create a application which have a tab control in where it should host a axwebbrowser for each tab.

So far no problem, but everytime i add a new instance of the axwebbrowser it creates about 10mb more memory usage.
And thats not nice Wink | ;)

... i know that you can copy instance with

axwebbrowser2 = axwebbrowser1

but then you have to set the location configs again to them and i mean it's not the nicest and cleaniest way
to do this! And the axwebbrowser1 is gone, so if i go back to the first tab i have to copy it back

axwebbrowser1 = axwebbrowser2

and add the location config again to the first webbrowser.

I searched for this on Google and here at CP but i can't find any solution. Maybe someone can help me out of this Smile | :)

Thanks

Matthias

Assert that halt execution

Colin Angus Mackay13-Oct-03 5:10

Colin Angus Mackay

13-Oct-03 5:10

Hello,

I have a number of Asserts in my code, ASP.NET application, and all they ever seem to do it show up in the output window. Frown | :(

I'd like when the Assertion fails that the code stops (like in the MFC applications I used to write) Well, I do have a bit of a work around, but it is kludgy and make my code look really inelegant. Dead | X|

From

Debug.Assert(AssertionCondition==false, "Something went wrong");

I now have to write:

#if DEBUG
if (AssertionCondition == false)
{
Debug.Assert(false, "Something went wrong");
}

And stick a breakpoint on the Assert Line.

Is there a simpler way to achieve the same?

--Colin Mackay--

"In the confrontation between the stream and the rock, the stream always wins - not through strength but perseverance." (H. Jackson Brown)

Re: Assert that halt execution

leppie13-Oct-03 7:02

leppie

13-Oct-03 7:02

if (AssertionCondition == false)
{
Debugger.Break();// :)
//Debug.Assert(false, "Something went wrong");
}

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Re: Assert that halt execution

Colin Angus Mackay13-Oct-03 11:09

Colin Angus Mackay

13-Oct-03 11:09

Thanks.

--Colin Mackay--

"In the confrontation between the stream and the rock, the stream always wins - not through strength but perseverance." (H. Jackson Brown)

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