How to customize the date format in filter bar of DynamicFilter in WinForms GridGroupingControl?

//Customize the DateFormat.
this.gridGroupingControl1.TableDescriptor.Columns["Date"].Appearance.FilterBarCell.Format = "dd-MMM-yyyy";
this.gridGroupingControl1.TopLevelGroupOptions.ShowFilterBar = true;
for (int i = 0; i < this.gridGroupingControl1.TableDescriptor.Columns.Count; i++)
{
   this.gridGroupingControl1.TableDescriptor.Columns[i].AllowFilter = true;
}
GridDynamicFilter dynamicFilter = new GridDynamicFilter();
dynamicFilter.WireGrid(this.gridGroupingControl1);
 
//Triggering the FilterBarSelectedItemChanged event. 
this.gridGroupingControl1.FilterBarSelectedItemChanged += gridGroupingControl1_FilterBarSelectedItemChanged;

//Triggering the TableControlDrawCellDisplayText event.
this.gridGroupingControl1.TableControlDrawCellDisplayText += gridGroupingControl1_TableControlDrawCellDisplayText;
 
//Handling the TableControlDrawCellDisplayText event.
void gridGroupingControl1_TableControlDrawCellDisplayText(object sender, GridTableControlDrawCellDisplayTextEventArgs e)
{
   GridTableCellStyleInfo style = (GridTableCellStyleInfo)e.Inner.Style;
   if (style.TableCellIdentity.Column != null && style.TableCellIdentity.Column.Name == "Date" && style.TableCellIdentity.TableCellType == GridTableCellType.FilterBarCell)
   {
      if (style.Text != "(All)" && style.Text != "(Custom....)" && style.Text != "(Empty)")
         e.Inner.DisplayText = string.Format("{0:dd-MMM-yyyy}", Convert.ToDateTime(style.Text));
   }
}
 
//Handling the FilterBarSelectedItemChanged event.
void gridGroupingControl1_FilterBarSelectedItemChanged(object sender, FilterBarSelectedItemChangedEventArgs e)
{
   if (e.Column != null && e.Column.Name == "Date")
   {
      int row = this.gridGroupingControl1.TableControl.CurrentCell.RowIndex;
      int col = this.gridGroupingControl1.TableControl.CurrentCell.ColIndex;
      GridTableCellStyleInfo style = this.gridGroupingControl1.TableControl.GetTableViewStyleInfo(row, col);
      GridTableFilterBarExtCellRenderer renderer = this.gridGroupingControl1.TableControl.GetCellRenderer(row, col) as GridTableFilterBarExtCellRenderer;
      renderer.ControlText = string.Format("{0:dd-MMM-yyyy}", Convert.ToDateTime(style.Text));
   }
}

'Customize the DateFormat.      
Me.gridGroupingControl1.TableDescriptor.Columns("Date").Appearance.FilterBarCell.Format = "dd-MMM-yyyy"
Me.gridGroupingControl1.TopLevelGroupOptions.ShowFilterBar = True
For i As Integer = 0 To Me.gridGroupingControl1.TableDescriptor.Columns.Count - 1
   Me.gridGroupingControl1.TableDescriptor.Columns(i).AllowFilter = True
Next i
Dim dynamicFilter As New GridDynamicFilter()
dynamicFilter.WireGrid(Me.gridGroupingControl1)
 
'Triggering the FilterBarSelectedItemChanged event. 
AddHandler Me.gridGroupingControl1.FilterBarSelectedItemChanged, AddressOf gridGroupingControl1_FilterBarSelectedItemChanged

'Triggering the TableControlDrawCellDisplayText event.
AddHandler Me.gridGroupingControl1.TableControlDrawCellDisplayText, AddressOf gridGroupingControl1_TableControlDrawCellDisplayText
 
'Handling the TableControlDrawCellDisplayText event.
void gridGroupingControl1_TableControlDrawCellDisplayText(Object sender, GridTableControlDrawCellDisplayTextEventArgs e)
   Dim style As GridTableCellStyleInfo = CType(e.Inner.Style, GridTableCellStyleInfo)
   If style.TableCellIdentity.Column IsNot Nothing AndAlso style.TableCellIdentity.Column.Name = "Date" AndAlso style.TableCellIdentity.TableCellType = GridTableCellType.FilterBarCell Then
      If style.Text <> "(All)" AndAlso style.Text <> "(Custom....)" AndAlso style.Text <> "(Empty)" Then
         e.Inner.DisplayText = String.Format("{0:dd-MMM-yyyy}", Convert.ToDateTime(style.Text))
      End If
   End If
 
'Handling the FilterBarSelectedItemChanged event.
void gridGroupingControl1_FilterBarSelectedItemChanged(Object sender, FilterBarSelectedItemChangedEventArgs e)
   If e.Column IsNot Nothing AndAlso e.Column.Name = "Date" Then
      Dim row As Integer = Me.gridGroupingControl1.TableControl.CurrentCell.RowIndex
      Dim col As Integer = Me.gridGroupingControl1.TableControl.CurrentCell.ColIndex
      Dim style As GridTableCellStyleInfo = Me.gridGroupingControl1.TableControl.GetTableViewStyleInfo(row, col)
      Dim renderer As GridTableFilterBarExtCellRenderer = TryCast(Me.gridGroupingControl1.TableControl.GetCellRenderer(row, col), GridTableFilterBarExtCellRenderer)
      renderer.ControlText = String.Format("{0:dd-MMM-yyyy}", Convert.ToDateTime(style.Text))
   End If