Threading problem in C#

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Dear friends
I am facing an error while I am reading data from clipboard on a timer my error is

ex = {"Current thread must be set to single thread apartment (STA) mode before OLE calls can be made. Ensure that your Main function has STAThreadAttribute marked on it."}

how can i solve this problem

[edit]Just fixing the typo in the subject[/edit]

Posted 16-Apr-12 19:39pm

srilekhamenon

Updated 16-Apr-12 20:37pm

StM0n

v2

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**JF2015** · Answer 1 · 2012-04-16T19:43:00

Solution 1

You need to add STAThreadAttribute on the main method:

C#

C#
[STAThread]
static void Main(string[] args)
{
}

See here for more info:
http://blogs.msdn.com/b/smondal/archive/2010/09/08/current-thread-must-be-set-to-single-thread-apartment-sta-mode-before-ole-calls-can-be-made.aspx[^]

Posted 16-Apr-12 19:43pm

JF2015

Comments

VJ Reddy 17-Apr-12 1:51am

Good answer. 5!

srilekhamenon 17-Apr-12 1:54am

thanks but have already implemented [STAThread] flag and error is still coming my code is

private void tm_Tick(System.Object sender, System.EventArgs e)
{
try {
dynamic ms = new MemoryStream();
IDataObject data = default(IDataObject);
Image bmap = default(Image);
Sendweb(hHwnd, WM_CAP_EDIT_COPY, 0, 0);
if (this.InvokeRequired) {
this.BeginInvoke(new GetClipBord(GetIDataobject), data);
} else {
data = Clipboard.GetDataObject();
}
if (data.GetDataPresent(typeof(System.Drawing.Bitmap))) {
bmap = (Image)data.GetData(typeof(System.Drawing.Bitmap));
bmap.Save(ms, ImageFormat.Jpeg);
byteDateLine = ms.ToArray();
m_sock.Send(byteDateLine, byteDateLine.Length, 0);
}
} catch (Exception ex) {
}
}

srilekhamenon 17-Apr-12 1:56am

iam geting error on following line
data = Clipboard.GetDataObject();

JF2015 17-Apr-12 2:03am

Did you have a look at the answers in this forum post:
http://social.msdn.microsoft.com/Forums/en-US/winforms/thread/13b13f7f-1358-4e17-9444-ed144e354955/
Here, the exact same problem is solved. See if you find some useful hint.