Set the row background color according to a cell value

  • Thread starter Thread starter dreamkeys
  • Start date Start date
D

dreamkeys

Hi,

At this time I'm able to set the background color of a cell depending
on it's value. I'm able to achieve this by extending the
DataGridTextBoxColumn class and overriding the Paint method:

Code: 
protected override void Paint(System.Drawing.Graphics g,
System.Drawing.Rectangle bounds, CurrencyManager source, int rowNum,
System.Drawing.Brush backBrush, System.Drawing.Brush foreBrush, bool
alignToRight)
{
if (internalHighlightInformation != null)
{
object objAtRow = GetColumnValueAtRow(source, rowNum);

//(Values A, C and X are just an example, this values
are set at run-time)
if (objAtRow = "B" || objAtRow = "C" || objAtRow =
"X")
{

backBrush =  new SolidBrush(Color.Red);
foreBrush = new SolidBrush(Color.White);
}
}

base.Paint(g, bounds, source, rowNum, backBrush,
foreBrush, alignToRight);
}

My problem now is, how can I do this to the full row? At this stage I
know the row number, and the cell, but I don't have any access to the
cells that exist in the same row :( (or do I?)

Any ideas? I just cannot figure out how to do this...

Thanks ahead for all the help.

Best Regards,

L. Pinho
 
Use the GridViewRowEventArgs event
I realize you're a C# guy, and the sample I'm going to show you is VB.Net,
but it should point you in the correct direction:http://www.aspnet101.com/aspnet101/aspnet/codesample.aspx?code=GVCond...

David Wierhttp://aspnet101.comhttp://iWritePro.com- One click PDF, convert .doc/.rtf/.txt to HTML with no
bloated markup


Hi,
Click to expand...
At this time I'm able to set the background color of a cell depending
on it's value. I'm able to achieve this by extending the
DataGridTextBoxColumn class and overriding the Paint method:
Click to expand...
Code: 
protected override void Paint(System.Drawing.Graphics g,
System.Drawing.Rectangle bounds, CurrencyManager source, int rowNum,
System.Drawing.Brush backBrush, System.Drawing.Brush foreBrush, bool
alignToRight)
{
if (internalHighlightInformation != null)
{
object objAtRow = GetColumnValueAtRow(source, rowNum);[/QUOTE]
[QUOTE]
//(Values A, C and X are just an example, this values
are set at run-time)
if (objAtRow = "B" || objAtRow = "C" || objAtRow =
"X")
{[/QUOTE]
[QUOTE]
backBrush =  new SolidBrush(Color.Red);
foreBrush = new SolidBrush(Color.White);
}
}[/QUOTE]
[QUOTE]
base.Paint(g, bounds, source, rowNum, backBrush,
foreBrush, alignToRight);
}
Click to expand...
My problem now is, how can I do this to the full row? At this stage I
know the row number, and the cell, but I don't have any access to the
cells that exist in the same row :( (or do I?)
Click to expand...
Any ideas? I just cannot figure out how to do this...
Click to expand...
Thanks ahead for all the help.
Click to expand...
Best Regards,
Click to expand...
L. Pinho
Click to expand...
Click to expand...

Hi,
thanks for the reply

I'm trying to do this at a windows forms level, I don't seem to find
the DoColor event/method anywhere, is a part of which object?

Thanks
 
This can be accomplished by handling the RowPrePaint event and setting the
background color of the cell accordingly.

void dataGridView1_RowPrePaint(object sender,
DataGridViewRowPrePaintEventArgs e)

{

if(e.RowIndex>-1)

{

someclass sc = (someclass)dataGridView1.Rows[e.RowIndex].DataBoundItem;

this.dataGridView1.Rows[e.RowIndex].Cells[0].Style.BackColor = sc.Color;

}

}


--
--
Bob Powell [MVP]
Visual C#, System.Drawing

Ramuseco Limited .NET consulting
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