Click here to Skip to main content
11,477,044 members (77,965 online)
Rate this: bad
good
Please Sign up or sign in to vote.
See more: C#
Hello,

I have a big query that takes time to execute.
When I execute it in another thread I have a problem .

Let us see
// pseudocode
  Thread startSql=new Thread(new ThreadStart(RunSql));
  public void RunSql()
    {
       DataGridView1.datasource=Connection.runselect(sqlStatment);
    } 
//where runselect return table
When I try to run thread it throw exception that I cannot access the datagridview through another thread.

How can I solve this?

Thanks.
Posted 11-May-13 23:30pm
Edited 11-May-13 23:39pm
v3

1 solution

Rate this: bad
good
Please Sign up or sign in to vote.

Solution 1

You can't access controls except from the thread on which they were created (the UI thread).
In order to do it you must use P/Invoke:
Invoke(new MethodInvoker(delegate { DataGridView1.datasource=Connection.runselect(sqlStatment); }));
  Permalink  

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

  Print Answers RSS
0 Sergey Alexandrovich Kryukov 274
1 Richard Deeming 245
2 _duDE_ 165
3 Tomas Takac 150
4 Sascha Lefèvre 145
0 Sergey Alexandrovich Kryukov 7,675
1 OriginalGriff 7,246
2 Sascha Lefèvre 3,034
3 Maciej Los 2,491
4 Richard Deeming 2,305


Advertise | Privacy | Mobile
Web01 | 2.8.150520.1 | Last Updated 12 May 2013
Copyright © CodeProject, 1999-2015
All Rights Reserved. Terms of Service
Layout: fixed | fluid

CodeProject, 503-250 Ferrand Drive Toronto Ontario, M3C 3G8 Canada +1 416-849-8900 x 100