Protected PlusBitMap as Bitmap
Protected EmptyBitmap as Bitmap
 
Private Sub Planung_Load(sender As System.Object, e As System.EventArgs) _
    Handles MyBase.Load
 
    PlusBitMap = My.Resource....
    EmptyBitmap = new Bitmap(1,1)
    'DataGridView heißt "dgvPlanung"
    dgvPlanung.DataSource = bsGrid
 
    DatenLaden()
 
End Sub
 
 
Private Sub dgvPlanung_CellFormatting(sender As Object, e As _
  System.Windows.Forms.DataGridViewCellFormattingEventArgs) Handles _
  dgvPlanung.CellFormatting
 
  If e.RowIndex > -1 ANDALSO e.ColumnIndex = NummerDerPlusSpalte Then
    If dgvPlanung.Rows(e.RowIndex).Cells("Arbeitnehmer").Value.Equals( _
      DBNull.Value) Then
      e.Value = EmptyBitmap
    else
      e.Value = PlusBitMap
    End If
  End If
End Sub