Operation is not valid due to the current state of the object

Hello

I've already searched here and other forums for my answer but there is not any answers about this, so please help me...

I have a C#.Net Windows Based project using Microsoft.Reporting.WinForms.ReportViewer Control for showing remote reports from SSRS 2008 R2, everything is ok except that the "Find | FindNext" is disabled and when I call "Find" or "FindNext" method from code behind I'll get "Operation is not valid due to the current state of the object."

I'm calling these methods in KeyDown and I even tried using InvokeRequired for my report viewer to avoid cross thread exception.

So please someone tell me what's my problem, is "Find" usable in remote mode? or it can only be used in local mode?

Thanks and I'd appreciate your answers.