Cross-thread operation not valid [duplicate]
You can't. UI operations must be performed on the owning thread. Period.
What you could do, is create all those items on a child thread, then call Control.Invoke and do your databinding there.
Or use a BackgroundWorker
BackgroundWorker bw = new BackgroundWorker(); bw.DoWork += (s, e) => { /* create items */ }; bw.RunWorkerCompleted += (s, e) => { /* databind UI element*/ }; bw.RunWorkerAsync();
When you access the from's property from another thread, this exception is thrown.To work around this problem there's at least 2 options.
Telling Control to don't throw these exceptions (which is not recommended):
Control.CheckForIllegalCrossThreadCalls = false;Using threadsafe functions:
private void ThreadSafeFunction(int intVal, bool boolVal){ if (this.InvokeRequired) { this.Invoke( new MethodInvoker( delegate() { ThreadSafeFunction(intVal, boolVal); })); } else { //use intval and boolval }}