Resolved in .NET 2.0

The problem is solved when using .NET 2.0. Following code shows the error (.NET 1.1) and the solution (.NET 2.0) : Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load AddHandler Application.ThreadException, AddressOf OnThreadException Dim ds As New DataSet ds.Tables.Add("Customers") ds.Tables("Customers").Columns.Add("ID", GetType(Int32)) ds.Tables("Customers").Columns.Add("Name", GetType(String)) ds.Tables("Customers").Rows.Add(New Object() {1, "John"}) ds.Tables("Customers").Rows.Add(New Object() {2, "Jeff"}) Me.GridDataBoundGrid1.DataSource = ds Me.GridDataBoundGrid1.DataMember = "Customers" End Sub Private Sub GridDataBoundGrid1_CellDoubleClick(ByVal sender As Object, ByVal e As Syncfusion.Windows.Forms.Grid.GridCellClickEventArgs) Handles GridDataBoundGrid1.CellDoubleClick Throw New ApplicationException("Hi, this is an error.") End Sub Private Sub OnThreadException(ByVal sender As Object, ByVal e As System.Threading.ThreadExceptionEventArgs) MessageBox.Show(e.Exception.Message) End Sub