How to set a text and focus on form load in grid dynamic filter bar cell in WinForms GridGroupingControl?

FilterCondition condition = new FilterCondition(FilterCompareOperator.Like, "Sample data1");

// Add the condition to the specific column
RecordFilterDescriptor rf = new RecordFilterDescriptor("Sample Test", condition);

// Add the RecordFilterDescriptor to the RecordFilters
this.gridGroupingControl1.TableDescriptor.RecordFilters.Add(rf);

// Changing FilterBar display text
private void gridGroupingControl1_TableControlDrawCellDisplayText(object sender, GridTableControlDrawCellDisplayTextEventArgs e)
{
    GridTableCellStyleInfo style = this.gridGroupingControl1.TableControl.GetTableViewStyleInfo(e.Inner.RowIndex, e.Inner.ColIndex);

    if (e.Inner.ColIndex == 1)
    {
        if (style.TableCellIdentity.TableCellType == GridTableCellType.FilterBarCell)
        {
            e.Inner.DisplayText = "Dynamic Filter";

            // Activate the CurrentCell on the FilterBar cell using (RowIndex, ColIndex)
            e.TableControl.CurrentCell.Activate(e.Inner.RowIndex, e.Inner.ColIndex);
        }
    }
}

Dim condition As New FilterCondition(FilterCompareOperator.Like, "Sample data1")

' Add the Condition to the particular Column.
Dim rf As New RecordFilterDescriptor("Sample Test", condition)

' Add the RecordFilterDescriptor to the RecordFilters.
Me.gridGroupingControl1.TableDescriptor.RecordFilters.Add(rf)

' changing FilaterBar Display Text.
Private Sub gridGroupingControl1_TableControlDrawCellDisplayText(ByVal sender As Object, ByVal e As GridTableControlDrawCellDisplayTextEventArgs)
    Dim style As GridTableCellStyleInfo = Me.gridGroupingControl1.TableControl.GetTableViewStyleInfo(e.Inner.RowIndex, e.Inner.ColIndex)
    If e.Inner.ColIndex = 1 Then
        If style.TableCellIdentity.TableCellType = GridTableCellType.FilterBarCell Then
            e.Inner.DisplayText = "Dynamic Filter"
            'Activate the CurrentCell on the Filterbar cell using (RowIndex,ColIndex)
            e.TableControl.CurrentCell.Activate(e.Inner.RowIndex, e.Inner.ColIndex)
        End If
    End If
End Sub