Hello,

I have a datagridview with lots of columns selectable with a checkbox
control, and I would like to have its header text as narrow as a check box,
but for this I have to display its text vertically...

How can I achieve this ?

Very thanks in advance !
--
Roger Tranchez
MCTS
..NET 2005 and DB developer

Hi Roger,

Sorry that I may not understand your question exactly. Could you please
explain more about your question?


Sincerely,
Linda Liu
Microsoft Online Community Support

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Hello,

Here's an example:

You can see below a datagridview with two columns with their header text
"text1" and "text2". The values for these columns are boolean, so I use the
checkbox to introduce the values (represented by Xs) as follows:

t t
e e
x x
t t
1 2 ...
--------------------------------------------------------
X X

As you can see, the header text are "vertically oriented" because I want to
make the best use of the form's space (I will have LOTS of checkbox columns)
.... and I don't know how to achieve this "vertical effect".

I hope you can understand what I mean.

Thanks,


--
Roger Tranchez
MCTS
..NET 2005 and DB developer


"Linda Liu [MSFT]" wrote:

I'm sorry but I have to make a correction:

the header text must go from bottom to top:

imagine you have a book in front of you, and you rotate it 90 degrees
counter-clockwise. This is the orientation I want for the text in the headers
(you will read it from bottom to top, letters will be 90 degrees-rotated)

Thanks,

Roger


--
Roger Tranchez
MCTS
..NET 2005 and DB developer


"Roger Tranchez" wrote:

Hi Roger,

Thank you for your reply and detailed explanation! I can understand your
question now.

Firstly, to custom draw a DataGridView, we need to handle its CellPainting
event.

Secondly, to draw a vertical oriented text, we could call the
Graphics.DrawString(string,Brush,RectangleF,String Format) method passing an
instance of StringFormat with a DirectionVertical format flag to this
method. For example:

System.Drawing.StringFormat drawFormat = new System.Drawing.StringFormat();
drawFormat.FormatFlags = StringFormatFlags.DirectionVertical;
// g is a Graphics object. The text "hello" will be drawn in vertical
orientation
g.DrawString("hello", this.Font, Brushes.Orange, new PointF(0,
0),drawFormat);

Unfortunately, the reading direction of the text "hello" would be from top
to bottom using the above method, which doesn't meet your requirement.

A solution is to call the Graphics.TranslateTransform and RotateTransform
methods to get what you want. The following is a sample.

void dataGridView1_CellPainting(object sender,
DataGridViewCellPaintingEventArgs e)
{
if (e.RowIndex == -1 && e.ColumnIndex >= 0)
{
e.PaintBackground(e.ClipBounds, true);
Rectangle rect =
this.dataGridView1.GetColumnDisplayRectangle(e.Col umnIndex, true);
Size titleSize =
TextRenderer.MeasureText(e.Value.ToString(), e.CellStyle.Font);
if (this.dataGridView1.ColumnHeadersHeight <
titleSize.Width)
this.dataGridView1.ColumnHeadersHeight =
titleSize.Width;

e.Graphics.TranslateTransform(0, titleSize.Width);
e.Graphics.RotateTransform(-90.0F);

e.Graphics.DrawString(e.Value.ToString(), this.Font,
Brushes.Orange, new PointF(rect.Y, rect.X));

e.Graphics.RotateTransform(90.0F);
e.Graphics.TranslateTransform(0, -titleSize.Width);
e.Handled = true;
}
}

In addition, you could set the AutoSizeColumnsMode property of the
DataGridView to AllCellsExceptHeader in order to make the DataGridView
compact.

Hope this helps.
If you have any question, please feel free to let me know.

Sincerely,
Linda Liu
Microsoft Online Community Support

Hello,

Really thanks for your answer; old Boss Bill can be proud of you 8-D.

I'll implement it this way.

--
Roger Tranchez
MCTS
..NET 2005 and DB developer


"Linda Liu [MSFT]" wrote: