CODEWITHSUNDEEP
c#formsobjectinvoke
mayur Rathod
mayur Rathod

Reputation: 1404

invoke method problem with form object in c#

I am developing a chat application with C# and we are using System.Timer.Timer for frequently getting data for the new request and zone request.

It is running fine but whenever we create a new instance a cross threaded operation exception occurs.

This is my code:

frmchat f = new frmchat();
MethodInvoker method = new MethodInvoker(delegate()
{
    f.Name = "xyz";f.Show();
});
if (f.InvokeRequired)
{
    f.Invoke(method);
}
else
{
    method();
}

This will create a number of chat forms.

Upvotes: 0

Views: 227

Answers (2)

Jalal Said
Jalal Said

Reputation: 16162

If you are creating that form at the elapsed event handler of that timer then use this.Invoke instead, like:

this.Invoke(new MethodInvoker(() =>
{
    frmchat f = new frmchat();
    f.Name = "xyz";
    f.Show();
}

Upvotes: 0

vidstige
vidstige

Reputation: 13079

I'm guessing your problem is new forms can only be created on the UI thread. Try to use a Windows.Forms.Timer if possible. This will reinvoke the event on the correct thread automagicly for you.

Upvotes: 1

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