method ChartView.EndUpdate ()
Resumes painting the control after painting is suspended by the BeginUpdate method.

 TypeDescription 
The BeginUpdate and EndUpdate methods maintains performance when items are added to the control one at a time. Use the Add method to add new child nodes. Use the Remove method to remove a node from the control. Use the Root property to get the root node of the control.

The following VB sample adds four nodes to the control :

With ChartView1
    .BeginUpdate
    With .Nodes
        .Add "Item 1", "root", "Key1"
        .Add "Item 2", "root"
        .Add "Sub Item 1", "Key1"
        .Add "Sub Item 2", "Key1"
    End With
    .EndUpdate
End With

The following C++ sample adds four nodes to the control :

#include "nodes.h"
COleVariant vtMissing; V_VT( &vtMissing ) = VT_ERROR;
m_chartview.BeginUpdate();
CNodes nodes = m_chartview.GetNodes();
nodes.Add( "Item 1", COleVariant( "root" ), COleVariant("Key1"), vtMissing, vtMissing );
nodes.Add( "Item 2", COleVariant( "root" ), vtMissing, vtMissing, vtMissing );
nodes.Add( "Sub Item 1", COleVariant( "Key1" ), vtMissing, vtMissing, vtMissing );
nodes.Add( "Sub Item 2", COleVariant( "Key1" ), vtMissing, vtMissing, vtMissing );
m_chartview.EndUpdate();

The following VB.NET sample adds four nodes to the control :

With AxChartView1
    .BeginUpdate()
    With .Nodes
        .Add("Item 1", "root", "Key1")
        .Add("Item 2", "root")
        .Add("Sub Item 1", "Key1")
        .Add("Sub Item 2", "Key1")
    End With
    .EndUpdate()
End With

The following C# sample adds four nodes to the control :

axChartView1.BeginUpdate();
EXORGCHARTLib.Nodes nodes = axChartView1.Nodes;
nodes.Add("Item 1", "root", "Key1", null, null);
nodes.Add("Item 2", "root", null, null, null);
nodes.Add("Sub Item 1", "Key1", null, null, null);
nodes.Add("Sub Item 2", "Key1", null, null, null);
axChartView1.EndUpdate();

The following VFP sample adds four nodes to the control :

With thisform.ChartView1
    .BeginUpdate
    With .Nodes
        .Add("Item 1", "root", "Key1")
        .Add("Item 2", "root")
        .Add("Sub Item 1", "Key1")
        .Add("Sub Item 2", "Key1")
    EndWith
    .EndUpdate
EndWith


Send comments on this topic.
1999-2016 Exontrol.COM, Software. All rights reserved.