Public Overridable Sub ClearFormulas( _
   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.ClearFormulas(row, column, rowCount, columnCount)

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

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 3
FpSpread1.ActiveSheetView.SetValue(i,0,i)
FpSpread1.ActiveSheetView.SetValue(i,1,i)
FpSpread1.ActiveSheetView.SetValue(i,2,i)
Next

FpSpread1.ActiveSheetView.Cells(5,0).Formula="SUM(A3:A4)"
FpSpread1.ActiveSheetView.Cells(5,1).Formula="SUM(A3:A4)"
FpSpread1.ActiveSheetView.Cells(5,2).Formula="SUM(A3:A4)"
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.ClearFormulas(5,0,1,3)
End Sub

private voidPage_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);
}

FpSpread1.ActiveSheetView.Cells[5,0].Formula="SUM(A3:A4)";
FpSpread1.ActiveSheetView.Cells[5,1].Formula="SUM(A3:A4)";
FpSpread1.ActiveSheetView.Cells[5,2].Formula="SUM(A3:A4)";
}

private void Button1_Click(object sender,System.EventArg se)
{
FarPoint.Web.Spread.Model.DefaultSheetDataModeldm=(FarPoint.Web.Spread.Model.DefaultSheetDataModel)FpSpread1.ActiveSheetView.DataModel;
dm.ClearFormulas(5,0,1,3);
}