C#

Re: Handling Exceptions from another thread

13-Apr-09 6:17

I have created a workaround but I am not satisfied with it. If anyone has a better suggestion please let me know. Here is the workaround:

void CallExceptionASync()
{
     Thread thrd;
     ThreadStart ts = (ThreadStart)delegate
     {
          try
          {
               t.DoSomething();
          }
          catch(MyCustomException ex)
          {
               this.lblMessage.Invoke((MethodInvokder)delegate()
               {
                    this.lblMessage.Text = ex.Message;
               });
          }
     }
}

Luc 64801113-Apr-09 7:22

Luc 648011

13-Apr-09 7:22

if the thread throws an exception, and the catch is to touch a GUI Control, then you need Control.Invoke, there is no way around that since that thread is not allowed to touch any Controls.

BTW: A BackgroundWorker has a Completed event which does the invoking automatically, and its event argument holds the exception that may have occurred.

Smile | :)

master window

EmZan13-Apr-09 3:20

13-Apr-09 3:20

i need to creat a windows application with many independent window usin the idea of master page in web development

i tried to use tab but its so bad

generaly i need one window that has a panel embedded into it
this panel contains all othe windows when selected from the main one

can any one auggest any idea??

Colin Angus Mackay13-Apr-09 3:50

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13-Apr-09 3:50

I don't see what was wrong with the tab, unless you didn't want to see the tabs.

Each panel should contain one control, a user control that you can define elsewhere. That keeps the code cleaner rather than throw all the controls in one form. Does that help?

EmZan13-Apr-09 4:48

13-Apr-09 4:48

the problem is that

1.when i load the program for the first time all tabs will be loaded
and may be many tabs i will not need

2.not every thing will be valid for atab

i need a centeralized application from one windo
or u can say master window as i described

thanks for ur reply Smile | :)

Colin Angus Mackay13-Apr-09 5:00

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13-Apr-09 5:00

You can dynamically add and remove tabs as you need them.

EmZan13-Apr-09 5:01

13-Apr-09 5:01

bad design i think Frown | :(

Colin Angus Mackay13-Apr-09 5:03

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13-Apr-09 5:03

Why? Internet explorer and Firefox do it all the time. As I recall, Firefox was lauded for having tabbed windows that you create and dismiss at will.

Fayu13-Apr-09 4:03

13-Apr-09 4:03

consider using MDI.

EmZan13-Apr-09 4:49

13-Apr-09 4:49

what is MDI ?

Fayu13-Apr-09 5:01

13-Apr-09 5:01

In visual studio 2005/2008, create new Item and select 'Mdi Partent'. This will create a toplevel form that can contain other forms.

EmZan13-Apr-09 5:11

13-Apr-09 5:11

aha i know it

but it opens a new window not creates an embedded window
openning many windows is my problem

Colin Angus Mackay13-Apr-09 5:01

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13-Apr-09 5:01

EmZan wrote:
what is MDI ?

Multi document interface. Allows you to have one master window with many child windows inside. Each child window acts like a regular window (can be minimised, maximised, moved around etc) but only within the confines of the containing window.

how to populate data from dataset into textbox

naveen20_513-Apr-09 2:50

naveen20_5

13-Apr-09 2:50

hello i have one problem . i had one frontend in which there are textboxes dropdown . i have to populate data from excelsheet . well i succeed in making connection. but my problem is this that at one time one row data is populated in front end and then i have to click save button. then second row from the excel sheet should populate in my front end automaticaly. is this possible with using dataset . if yes can u guide me how.

thz in advance

C# on Mac OS

satsumatable13-Apr-09 2:42

satsumatable

13-Apr-09 2:42

Hi
Is there any open source that supports C# based development on top Mac OS?.

Thanks in advance ...

Re: C# on Mac OS

Colin Angus Mackay13-Apr-09 2:45

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13-Apr-09 2:45

Does the Mono Project not support the Mac? I know it is primarily Linux based, but then so is MacOS these days.

Re: C# on Mac OS

satsumatable13-Apr-09 3:04

satsumatable

13-Apr-09 3:04

OK, i did guess the same. Seems there is a Windows support also.

Thanks anyway..

Multithreading in windows Service

avi_dadi200213-Apr-09 2:33

avi_dadi2002

13-Apr-09 2:33

Hello everybody,
Please help me and suggest me how to do this and also tell me if any disadvantages with this approach. Thanks in advance.

I've 10 to 15 ftp addresses and credentials to those ftpsites.Now i've some files which needs to be upload to those sites.My xml file has the information about all ftp site address, credentials ,listening directory(from where to pick the file to upload) and destination directory(where to upload a file) details.And here in each record in xml i've different different intervals(10mins, 15 mins , 60 mins.....). According to that interval i need to pick and upload that file to the respective ftp folder.

I wrote one windows service in that windows service i used thread concept to achieve this. but all my files are uploaded at a time.I tested with some console application.Please help me.Sombody told me don't use threads it will take more processor usage like that, and they suggested me use timer.Please help me, its very urgent to me.

Thanks in advance from my heart.

Avinash Smile | :)

Re: Multithreading in windows Service

Fayu13-Apr-09 4:07