Question

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.

Answer 1

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();
}