iGRow dr = iGrid_Quote.Rows.Add();

System.InvalidOperationException не обработано
  _HResult=-2146233079
  _message=Cross-thread operation not valid: Control '' accessed from a thread other than the thread it was created on.
  HResult=-2146233079
  IsTransient=false
  Message=Cross-thread operation not valid: Control '' accessed from a thread other than the thread it was created on.
  Source=System.Windows.Forms
  StackTrace:
       at System.Windows.Forms.Control.get_Handle()
       at System.Windows.Forms.Control.get_InternalHandle()
       at System.Windows.Forms.Control.get_CreateParams()
       at TenTec.Windows.iGridLib.iGScrollBarBase.get_CreateParams()
       at System.Windows.Forms.Control.UpdateBounds(Int32 x, Int32 y, Int32 width, Int32 height)
       at System.Windows.Forms.Control.SetBoundsCore(Int32 x, Int32 y, Int32 width, Int32 height, BoundsSpecified specified)
       at System.Windows.Forms.Control.SetBounds(Int32 x, Int32 y, Int32 width, Int32 height, BoundsSpecified specified)
       at System.Windows.Forms.Control.set_Top(Int32 value)
       at TenTec.Windows.iGridLib.iGrid.SetVScrollBarVisibility(Boolean vScrollBarVisible, Boolean hScrollBarVisible, Int32 scrollableRowsHeight, Int32 scrollableAreaHeight, Int32 borderSize)
       at TenTec.Windows.iGridLib.iGrid.AdjustScrollBars()
       at TenTec.Windows.iGridLib.iGrid.AddRowRange(Int32 rowBefore, Int32 count, iGRowData rowData, Boolean checkGroupAndSortParams)
       at TenTec.Windows.iGridLib.iGrid.AddRowRange(Int32 rowBefore, Int32 count)
       at TenTec.Windows.iGridLib.iGRowCollection.Add()
       at ST_client.wQuote.iGrid_Quote_AddNewRow() in c:\STape\ST_client\ST_client\wQuote.xaml.cs:line 233
       at ST_client.wQuote.work_message_quote() in c:\STape\ST_client\ST_client\wQuote.xaml.cs:line 394
       at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
       at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Threading.ThreadHelper.ThreadStart()
  InnerException: