saridev Posted September 30, 2008 Report Share Posted September 30, 2008 hi guys, I have a problem invocating a webservice that has 4 different parameters. this is what I do. 1) File New Chart Type 2) use web services and select my webservice and method 3) then I set my parameters and everything crashes... System.NullReferenceException: Object reference not set to an instance of an object. in PowerGadgets.Data.WebServiceSource.a(ParameterInfo A_0, Boolean A_1) in PowerGadgets.Data.a.a() in PowerGadgets.Data.a.a(Object A_0, EventArgs A_1) in System.Windows.Forms.ComboBox.OnSelectedIndexChanged(EventArgs e) in System.Windows.Forms.ComboBox.WmReflectCommand(Message& m) in System.Windows.Forms.ComboBox.WndProc(Message& m) in System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) in System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) in System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) is there anything that u know is not working using webservices as source of data??? lemme know tommy Quote Link to comment Share on other sites More sharing options...
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