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Virtual Tree Grid (2)

Hi, In the VirtTreeGrid sample, I try to add a method Insert in SampleDate class: public void Insert(int index, SampleData newData) { internalRowCount++; ArrayList array = new ArrayList(data); array.Insert(index, newData); data = (SampleData[])array.ToArray(typeof(SampleData)); data[GetParent(index)].ExpandState = TreeNodeState.Closed; data[GetParent(index)].ExpandState = TreeNodeState.Opened; } In a button_click: gridControl1.Model.BeginUpdate(Syncfusion.Windows.Forms.BeginUpdateOptions.None); externalData.Insert(3, new SampleData(1, TreeNodeState.NoChildren, ...); gridControl1.Model.EndUpdate(); The model has been changed, but not the view. If I collapse myself the parent and then expand it, then it is updated. How can I update it by code?

1 Reply

SL Sebastien Lange July 18, 2002 11:27 AM UTC

externalData.CollapseData(index); this.gridControl1.ResetVolatileData();

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