how to solve this error

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C#

This is my code;

CleanUp();

           m_objFilterGraph = new FilgraphManager();
           string strFileName = DBUtils.ImagePath + "\\" + strFolderName + "\\" + txtFileID.Text.Trim() + ".AVI";
           if (File.Exists(strFileName))
           {
               m_objFilterGraph.RenderFile(strFileName);-Error come this line

               m_objBasicAudio = m_objFilterGraph as IBasicAudio;

               try
               {
                   m_objVideoWindow = m_objFilterGraph as IVideoWindow;
                   m_objVideoWindow.Owner = (int)panel2.Handle;
                   m_objVideoWindow.WindowStyle = WS_CHILD | WS_CLIPCHILDREN;
                   m_objVideoWindow.SetWindowPosition(panel2.ClientRectangle.Left,
                       panel2.ClientRectangle.Top,
                       panel2.ClientRectangle.Width,
                       panel2.ClientRectangle.Height);
               }
               catch (Exception)
               {
                   m_objVideoWindow = null;
               }

               m_objMediaEvent = m_objFilterGraph as IMediaEvent;

               m_objMediaEventEx = m_objFilterGraph as IMediaEventEx;
               m_objMediaEventEx.SetNotifyWindow((int)this.Handle, WM_GRAPHNOTIFY, 0);

               m_objMediaPosition = m_objFilterGraph as IMediaPosition;

               m_objMediaControl = m_objFilterGraph as IMediaControl;


               m_objMediaControl.Run();
               tabCtrlImage.SelectedTab = tbVideo;
               tbVideo.Focus();
           }
           else
               return;

       }

i press the video play button that time one error is came.. COM Exception was unhandled Exception from HRESULT 0x80040255..HOW TO SOLVE THIS ERROR