Spread for ASP.NET 7.0 Product Documentation
IsEmpty Method
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FarPoint.Web.Spread Assembly > FarPoint.Web.Spread.Model Namespace > DefaultSheetSpanModel Class : IsEmpty Method


Glossary Item Box

Determines whether the model is empty of cell spans.

Syntax

Visual Basic (Declaration) 
Public Overrides Function IsEmpty() As Boolean
Visual Basic (Usage)Copy Code
Dim instance As DefaultSheetSpanModel
Dim value As Boolean
 
value = instance.IsEmpty()
C# 
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#Copy Code
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);
}
Visual BasicCopy Code
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

Requirements

Target Platforms: Windows 7, Windows 8, Windows Vista, Windows Server 2000, Windows 2000 Professional, Windows XP Professional, Windows NT 4.0 Workstation, SP6, Windows NT 4.0 Server, SP6

See Also

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