Updating status bar from a class library

  • Thread starter Thread starter Venu
  • Start date Start date
V

Venu

Hi Everyone,

I'm very new to C# and I have the following problem - please help.

I have a Windows Forms application called 'FunApp' which has a status
bar. I also have a separate class library called FunTx compiled as a
DLL.

What I want to do is update the status bar from within a FunTx method -
and I used delegates to try this. Here's what I did.

FunApp
--------
delegate void SetStatusBar(void)

in a method of FunApp, I instantiated this

SetStatusBar sb = new SetStatusBar(SetStatusbarText);
where SetStatusBarText is a method that sets the .Text property of the
status bar.

I do the usual stuff like
FunTx ft = new FunTx();
ft.FunProcess(sb,n);

FunTx (separate class library - DLL)
-----
in FunTx I have a method called FunProcess

public void FunProcess(SetStatusBar sb, int y)
{
.....do something....
sb("And now update the status bar");
}


But nothing happens. No change in status bar. What am I doing wrong?
Any help (other ways to do too) is greatly appreciated.

thanks!
 
Hi,

Your delegate seem to accept no parameters. How do you expect FunTx to pass
the updated message to be displayed on the status bar?

This line:
sb("And now update the status bar");
Click to expand...

should upset the compiler!
 
Dmitriy Lapshin said:
Hi,

Your delegate seem to accept no parameters. How do you expect FunTx to pass
the updated message to be displayed on the status bar?

This line:


should upset the compiler!
Click to expand...


Hi Dmitriy,
Yes it did :) (after I posted the Q) because I was mistakenly not
compiling my class library. Anyway, now I'm lost - I don't know how to
do this. Is there some way I can accomplish this thru my class
library?

-v

--
Sincerely,
Dmitriy Lapshin [C# / .NET MVP]
Bring the power of unit testing to the VS .NET IDE today!
http://www.x-unity.net/teststudio.aspx

Venu said:
Hi Everyone,

I'm very new to C# and I have the following problem - please help.

I have a Windows Forms application called 'FunApp' which has a status
bar. I also have a separate class library called FunTx compiled as a
DLL.

What I want to do is update the status bar from within a FunTx method -
and I used delegates to try this. Here's what I did.

FunApp
--------
delegate void SetStatusBar(void)

in a method of FunApp, I instantiated this

SetStatusBar sb = new SetStatusBar(SetStatusbarText);
where SetStatusBarText is a method that sets the .Text property of the
status bar.

I do the usual stuff like
FunTx ft = new FunTx();
ft.FunProcess(sb,n);

FunTx (separate class library - DLL)
-----
in FunTx I have a method called FunProcess

public void FunProcess(SetStatusBar sb, int y)
{
....do something....
sb("And now update the status bar");
}


But nothing happens. No change in status bar. What am I doing wrong?
Any help (other ways to do too) is greatly appreciated.

thanks!
Click to expand...
Click to expand...
 
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