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How to group the unbound column in WinForms GridGroupingControl?

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Group the unbound column


Since the unbound column data are not bound to the data source, the WinForms GridGroupingControl of these columns are not possible. In order to group the unbound column, the unbound column needs to be populated with the data and it can be populated by handling the QueryValue event.


C#

//Set Hashtable vaule
for (int i = 0; i < this.gridGroupingControl1.Table.FilteredRecords.Count; i++)
{
    UnboundValues.Add(this.gridGroupingControl1.Table.FilteredRecords[i].Id, i + 20);
}

this.gridGroupingControl1.TableDescriptor.QueryValue += new FieldValueEventHandler(TableDescriptor_QueryValue);
 
void TableDescriptor_QueryValue(object sender, FieldValueEventArgs e)
{
   int recordIndex = this.gridGroupingControl1.Table.PrimaryKeySortedRecords.IndexOf(e.Record);
   if (e.Field.Name == "UnBoundColumn" && e.Record.Id >= 0)
   {
      e.Value = UnboundValues[e.Record.Id];
   }
}
VB
'Set Hashtable value
For i As Integer = 0 To Me.gridGroupingControl1.Table.FilteredRecords.Count - 1
     UnboundValues.Add(Me.gridGroupingControl1.Table.FilteredRecords(i).Id, i + 20)
Next i

AddHandler gridGroupingControl1.TableDescriptor.QueryValue, AddressOf TableDescriptor_QueryValue

Private Sub TableDescriptor_QueryValue(ByVal sender As Object, ByVal e As FieldValueEventArgs)
    Dim recordIndex As Integer = Me.gridGroupingControl1.Table.PrimaryKeySortedRecords.IndexOf(e.Record)

    If e.Field.Name = "UnBoundColumn" AndAlso e.Record.Id >= 0 Then
        e.Value = UnboundValues(e.Record.Id)
    End If
End Sub
The screenshot below illustrates the grouping of unbound column in GridGroupingControl 

Show group the unbound column


Conclusion


I hope you enjoyed learning how to group the unbound column in WinForms GridGroupingControl.

You can refer to our WinForms GridGroupingControl feature tour page to know about its other groundbreaking feature representations and WinForms GridGroupingControl documentation, and how to quickly get started for configuration specifications.


For current customers, you can check out our components from the License and Downloads page. If you are new to Syncfusion, you can try our 30-day free trial to check out our other controls.


If you have any queries or require clarifications, please let us know in the comments section below. You can also contact us through our support forumsDirect-Trac, or feedback portal. We are always happy to assist you! 

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