Public Overridable Sub ClearData( _
   ByVal row As Integer, _
   ByVal column As Integer, _
   ByVal rowCount As Integer, _
   ByVal columnCount As Integer _
) 

Dim instance As DefaultSheetDataModel
Dim row As Integer
Dim column As Integer
Dim rowCount As Integer
Dim columnCount As Integer
 
instance.ClearData(row, column, rowCount, columnCount)

public virtual void ClearData( 
   int row,
   int column,
   int rowCount,
   int columnCount
)

private void Page_Load(object sender, System.EventArgs e)
{
    if (this.IsPostBack) return;

    FpSpread1.ActiveSheetView.RowCount = 10;
    for (int i = 0; i<10; i++)
    {
        FpSpread1.ActiveSheetView.SetValue(i, 0, i);
        FpSpread1.ActiveSheetView.SetValue(i, 1, i);
        FpSpread1.ActiveSheetView.SetValue(i, 2, i);
    }
}

private void Button1_Click(object sender, System.EventArgs e)
{
    FarPoint.Web.Spread.Model.DefaultSheetDataModel dm = (FarPoint.Web.Spread.Model.DefaultSheetDataModel)FpSpread1.ActiveSheetView.DataModel;
    dm.ClearData(0, 0, 10, 2);
}

 Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

   If (Me.IsPostBack) Then Return

   FpSpread1.ActiveSheetView.RowCount = 10
   Dim i As Integer
   For i = 0 To 9
  FpSpread1.ActiveSheetView.SetValue(i, 0, i)
  FpSpread1.ActiveSheetView.SetValue(i, 1, i)
  FpSpread1.ActiveSheetView.SetValue(i, 2, i)
   Next

 End Sub


 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
   Dim dm As FarPoint.Web.Spread.Model.DefaultSheetDataModel = CType(FpSpread1.ActiveSheetView.DataModel, FarPoint.Web.Spread.Model.DefaultSheetDataModel)
   dm.ClearData(0, 0, 10, 2)
 End Sub