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