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How to prevent the Plus/Minus symbol of the Parent table when there is no record in the Child table?

Platform: ASP.NET Web Forms (Classic) |
Control: GridGroupingControl |
Published Date: April 30, 2011 |
Last Revised Date: July 10, 2014

 

When the Child table's record count is zero the Plus/Minus cell type of it's Parent table should be set as static to make it disappear. Please refer the below code snippet which illustrates this:

C#

protected void GridGroupingControl1_QueryCellStyleInfo(object sender, GridTableCellStyleInfoEventArgs e)

{

if (e.TableCellIdentity.TableCellType == GridTableCellType.RecordPlusMinusCell)

{

Record r = e.TableCellIdentity.DisplayElement.ParentRecord as Record;

if (r != null && r.NestedTables.Count > 0 && r.NestedTables[0].ChildTable.FilteredChildNodeCount == 0)

{

e.Style.CellType = "Static";

}

}

}

VB

Protected Sub GridGroupingControl1_QueryCellStyleInfo(ByVal sender As Object, ByVal e As GridTableCellStyleInfoEventArgs)

If e.TableCellIdentity.TableCellType = GridTableCellType.RecordPlusMinusCell Then

Dim r As Record = CType(IIf(TypeOf e.TableCellIdentity.DisplayElement.ParentRecord Is Record, e.TableCellIdentity.DisplayElement.ParentRecord, Nothing), Record)

If Not r Is Nothing AndAlso r.NestedTables.Count > 0 AndAlso r.NestedTables(0).ChildTable.FilteredChildNodeCount = 0 Then

e.Style.CellType = "Static"

End If

End If

End Sub

Sample:

http://help.syncfusion.com/support/samples/kb/Grid.Web/6.1.0.34/NoChildRec/Plusminus.zip

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