How to Show Summary Results in the Inner Most Table on every Parent Level in Nested Related Tables

3 Jan 2020 / 3 minutes to read

The summary results of the nested tables can be obtained by using GetSummaryText method of GridEngine.

private void gridGroupingControl1_QueryValue(object sender, Syncfusion.Grouping.FieldValueEventArgs e) 
{ 
    if(e.TableDescriptor.Name == this.parentTD.Name)
    { 
        Group g = e.Record.NestedTables[0].ChildTable as Group; 

//Sets SummaryText for ParentTable.
        e.Value = GridEngine.GetSummaryText(g, "c_ROW", "c_SUM");
    } 
    else if
    (e.TableDescriptor == this.childTD) 
    { 
          Group g = e.Record.NestedTables[0].ChildTable as Group;

//Sets SummaryText for child table.
          e.Value = GridEngine.GetSummaryText(g, "gc_ROW", "gc_SUM");
    } 
    else if
         (e.TableDescriptor == this.gridChildTD) 
         { 

//Retrieves the unbound column values.
                object o = this.unboundValues[e.Record.GetValue("GrandChildID").ToString()]; double d; 
                if(o != null && double.TryParse(o.ToString(), System.Globalization.NumberStyles.Any, null, out d)) 
                {

//Displays the values.
                       e.Value = d; 

                } 
        } 

}
Private Sub gridGroupingControl1_QueryValue(ByVal sender As Object, ByVal e As Syncfusion.Grouping.FieldValueEventArgs)
If e.TableDescriptor.Name = Me.parentTD.Name Then
Dim g As Group = CType(IIf(TypeOf e.Record.NestedTables(0).ChildTable Is Group, e.Record.NestedTables(0).ChildTable, Nothing), Group)

'Sets SummaryText for ParentTable.
e.Value = GridEngine.GetSummaryText(g, "c_ROW", "c_SUM")
ElseIf e.TableDescriptor Is Me.childTD Then
Dim g As Group = CType(IIf(TypeOf e.Record.NestedTables(0).ChildTable Is Group, e.Record.NestedTables(0).ChildTable, Nothing), Group)

'Sets SummaryText for ChildTable.
e.Value = GridEngine.GetSummaryText(g, "gc_ROW", "gc_SUM")
ElseIf e.TableDescriptor Is Me.gridChildTD Then

'Retrieves the unbound column values.
Dim o As Object = Me.unboundValues(e.Record.GetValue("GrandChildID").ToString())
Dim d As Double
If Not o Is Nothing AndAlso Double.TryParse(o.ToString(), System.Globalization.NumberStyles.Any, Nothing, d) Then

'Displays the values.
e.Value = d
End If
End If
End Sub