Hi all,

What is it about DataViews in another assembly ? Should it not be possible ?

I have a DataTable and a DataView in one assembly.
I have a Datagrid on a windowsform in my main application, and it's
DataSource is bound to the DataView in my assembly.
The DataTable in the assembly is updated every second, by a subroutine in
the assembly, and the subroutine is called from my main application.

My problem is that the application randomly crashes with an
NullReferenceException.... What could be wrong ?

Here is the stack trace

System.NullReferenceException: Object reference not set to an instance of an
object.
  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.Callback(IntPtr hWnd, Int32 msg,
IntPtr wparam, IntPtr lparam)

Thanks in advance

Br

Kristian F. Thomsen