Public Overrides Function Add( _
   ByVal row As Integer, _
   ByVal column As Integer, _
   ByVal rowCount As Integer, _
   ByVal columnCount As Integer _
) As Boolean

Dim instance As DefaultSheetSpanModel
Dim row As Integer
Dim column As Integer
Dim rowCount As Integer
Dim columnCount As Integer
Dim value As Boolean
 
value = instance.Add(row, column, rowCount, columnCount)

public override bool Add( 
   int row,
   int column,
   int rowCount,
   int columnCount
)

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

bool b1;
FarPoint.Web.Spread.Model.CellRange range;
FpSpread1.ActiveSheetView.ColumnCount=10;
FpSpread1.ActiveSheetView.RowCount=10;
FpSpread1.ActiveSheetView.ColumnHeader.RowCount=3;
FarPoint.Web.Spread.Model.ISheetSpanModel model=FpSpread1.ActiveSheetView.ColumnHeaderSpanModel;
model.Add(0,0,3,3);
range=model.Find(2,2);
b1=model.IsEmpty();
ListBox1.Items.Add(range.ToString());
ListBox1.Items.Add(Convert.ToString(model.GetEnumerator(0,0,3,3)));
ListBox1.Items.Add(Convert.ToString(b1));
}

private void Button1_Click(object sender,System.EventArgs e)
{
FarPoint.Web.Spread.Model.ISheetSpanModel model=FpSpread1.ActiveSheetView.ColumnHeaderSpanModel;
model.Remove(0,0);
}

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

If(IsPostBack)Then Return

Dim range As FarPoint.Web.Spread.Model.CellRange
Dimb 1 As Boolean
FpSpread1.ActiveSheetView.ColumnCount=10
FpSpread1.ActiveSheetView.RowCount=10
FpSpread1.ActiveSheetView.ColumnHeader.RowCount=3
Dim model As FarPoint.Web.Spread.Model.ISheetSpanModel=FpSpread1.ActiveSheetView.ColumnHeaderSpanModel
model.Add(0,0,3,3)
range=model.Find(2,2)
b1=model.IsEmpty()
ListBox1.Items.Add(range.ToString)
ListBox1.Items.Add(Convert.ToString(model.GetEnumerator(0,0,3,3)))
ListBox1.Items.Add(b1)
End Sub

Private Sub Button1_Click(ByVal sender As System.Object,ByVal e As System.EventArgs)Handles Button1.Click
DimmodelAsFarPoint.Web.Spread.Model.ISheetSpanModel=FpSpread1.ActiveSheetView.ColumnHeaderSpanModel
model.Remove(0,0)
End Sub