[500] [URGENT] - A - vb.net winform datagrid dataset refresh timing

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Object reference not set to an instance of an object.
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   at System.Data.DataView.GetRecord(Int32 recordIndex)

   at System.Data.DataView.IsOriginalVersion(Int32 index)

   at System.Data.DataRowView.GetColumnValue(DataColumn column)

   at System.Data.DataColumnPropertyDescriptor.GetValue(Object component)

   at System.Windows.Forms.DataGridColumnStyle.GetColumnValueAtRow(CurrencyManager source, Int32 rowNum)

   at System.Windows.Forms.DataGridTextBoxColumn.Paint(Graphics g, Rectangle bounds, CurrencyManager source, Int32 rowNum, Brush backBrush, Brush foreBrush, Boolean alignToRight)

   at System.Windows.Forms.DataGridRelationshipRow.PaintCellContents(Graphics g, Rectangle cellBounds, DataGridColumnStyle column, Brush backBr, Brush foreBrush, Boolean alignToRight)

   at System.Windows.Forms.DataGridRow.PaintData(Graphics g, Rectangle bounds, Int32 firstVisibleColumn, Int32 columnCount, Boolean alignToRight)

   at System.Windows.Forms.DataGridRelationshipRow.Paint(Graphics g, Rectangle bounds, Rectangle trueRowBounds, Int32 firstVisibleColumn, Int32 numVisibleColumns, Boolean alignToRight)

   at System.Windows.Forms.DataGrid.PaintRows(Graphics g, Rectangle& boundingRect)

   at System.Windows.Forms.DataGrid.PaintGrid(Graphics g, Rectangle gridBounds)

   at System.Windows.Forms.DataGrid.OnPaint(PaintEventArgs pe)

   at System.Windows.Forms.Control.PaintWithErrorHandling(PaintEventArgs e, Int16 layer, Boolean disposeEventArgs)

   at System.Windows.Forms.Control.WmPaint(Message& m)

   at System.Windows.Forms.Control.WndProc(Message& m)

   at System.Windows.Forms.ControlNativeWindow.OnMessage(Message& m)

   at System.Windows.Forms.ControlNativeWindow.WndProc(Message& m)

   at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

   at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)

   at System.Windows.Forms.ComponentManager.System.Windows.Forms.UnsafeNativeMethods+IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)

   at System.Windows.Forms.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)

   at System.Windows.Forms.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)

   at System.Windows.Forms.Application.Run(Form mainForm)

   at eBuilder.Apps.TransferManagerApp.modMain.main() in C:\VSS\TransferManager\TransferManagerApplication\modMain.vb:line 45
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OK  
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dvQueue = New DataView(modMain.objClsDSTMW.dsTransferManager.transferManagerFile, "fFileStatus<>'Success' and fFileStatus<>'Cancelled'", "fFilePriority ASC", DataViewRowState.CurrentRows)
        dgQueue.DataSource = dvQueue


the datagrid is bound to a dataset's datatable and teh table is updated via another thread in the process... this causes the above exception... the thread updates the dataset at times may be 100 times a second.. so hwo do I work arround this.

I heard of the beginudpate endupdate event but unsuccessfull in finding how to implement it.
also how to show only a few columns necessary and how to change their header.

thanks
-smit.

pelase help