avoid column headers to be flat, sunken or raised

[Mario]

I am working with a GridGroupingControl of the current version. The enclosed images shows what I try to achieve and what I currently have.

I have set Appearance.ColumnHeaderCell.CellAppearance to Flat.

This causes a white line to be drawn on top of all column header cells. This cuts off the first pixels of my background image.

How can I avoid this? I want my background image to be the only thing drawn for the header cells.

Thanks for your help.

Images11.zip

[Administrator]

Hi Mario,

To resolve this issue, you need to use the TableControlDrawcell event to draw the line in the top of the column header cell in a grid. Please find the code snippet below

GridTableCellStyleInfo info = e.Inner.Style as GridTableCellStyleInfo;
if( info.TableCellIdentity.TableCellType == GridTableCellType.ColumnHeaderCell )
{
e.Inner.Renderer.Draw(e.Inner.Graphics,e.Inner.Bounds,e.Inner.RowIndex,e.Inner.ColIndex,e.Inner.Style);
e.Inner.Cancel = true;

Pen yPen = new Pen("yourColor");
yPen.Width = 5;//For your requirement
e.Inner.Graphics.DrawLine(yPen,e.Inner.Bounds.Location,new Point(e.Inner.Bounds.X+ e.Inner.Bounds.Width, e.Inner.Bounds.Y) );

}

Thanks
Haneef

[Mario]

Hi Haneef,
you describe, how I can write a line using the DrawCell event. However, what I would like to achieve is the opposite: I don''t want the white line on top of a flat column header to be drawn. In fact, I just want to see my background image in the column header, without any other stuff being drawn by the grid control.
My problem is, that I can only set the CellAppearance to Flat, Sunken or Raised. There is no option "None" to choose here.

Regards, Mario


>Hi Mario,

To resolve this issue, you need to use the TableControlDrawcell event to draw the line in the top of the column header cell in a grid. Please find the code snippet below

GridTableCellStyleInfo info = e.Inner.Style as GridTableCellStyleInfo;
if( info.TableCellIdentity.TableCellType == GridTableCellType.ColumnHeaderCell )
{
e.Inner.Renderer.Draw(e.Inner.Graphics,e.Inner.Bounds,e.Inner.RowIndex,e.Inner.ColIndex,e.Inner.Style);
e.Inner.Cancel = true;

Pen yPen = new Pen("yourColor");
yPen.Width = 5;//For your requirement
e.Inner.Graphics.DrawLine(yPen,e.Inner.Bounds.Location,new Point(e.Inner.Bounds.X+ e.Inner.Bounds.Width, e.Inner.Bounds.Y) );

}

Thanks
Haneef

[Administrator]

Hi Mario,

Please try this code snippet to resolve this issue.

this.grid.TableModel.Properties.Buttons3D = false;

Let me know if this helps.
Best Regards,
Haneef.