IsEmpty Method (DefaultSheetSpanModel)

In This Topic

Determines whether the model is empty of cell spans.

Syntax

Visual Basic
C#

'Declaration
 
Public Overrides Function IsEmpty() As Boolean

'Usage
 
Dim instance As DefaultSheetSpanModel
Dim value As Boolean
 
value = instance.IsEmpty()

public override bool IsEmpty()

Return Value

true if there are no cell spans; false otherwise

Example

This example adds a span to the ColumnHeaderSpanModel of the active sheet. In the click event of a button, the span is removed.

C#
Visual Basic

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
Dim b1 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
Dim model As FarPoint.Web.Spread.Model.ISheetSpanModel=FpSpread1.ActiveSheetView.ColumnHeaderSpanModel
model.Remove(0,0)
End Sub

Reference

DefaultSheetSpanModel Class
DefaultSheetSpanModel Members