Spread ASP.NET 6.0 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
privatevoidPage_Load(objectsender,System.EventArgse)
{
if(this.IsPostBack)return;

boolb1;
FarPoint.Web.Spread.Model.CellRangerange;
FpSpread1.ActiveSheetView.ColumnCount=10;
FpSpread1.ActiveSheetView.RowCount=10;
FpSpread1.ActiveSheetView.ColumnHeader.RowCount=3;
FarPoint.Web.Spread.Model.ISheetSpanModelmodel=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));
}

privatevoidButton1_Click(objectsender,System.EventArgse)
{
FarPoint.Web.Spread.Model.ISheetSpanModelmodel=FpSpread1.ActiveSheetView.ColumnHeaderSpanModel;
model.Remove(0,0);
}
Visual BasicCopy Code
PrivateSubPage_Load(ByValsenderAsSystem.Object,ByValeAsSystem.EventArgs)HandlesMyBase.Load

If(IsPostBack)ThenReturn

DimrangeAsFarPoint.Web.Spread.Model.CellRange
Dimb1AsBoolean
FpSpread1.ActiveSheetView.ColumnCount=10
FpSpread1.ActiveSheetView.RowCount=10
FpSpread1.ActiveSheetView.ColumnHeader.RowCount=3
DimmodelAsFarPoint.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)
EndSub

PrivateSubButton1_Click(ByValsenderAsSystem.Object,ByValeAsSystem.EventArgs)HandlesButton1.Click
DimmodelAsFarPoint.Web.Spread.Model.ISheetSpanModel=FpSpread1.ActiveSheetView.ColumnHeaderSpanModel
model.Remove(0,0)
EndSub

Requirements

Target Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, Windows Vista, Windows Server 2008 family

See Also

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