image opacity

[Eric Weber]

Any idea how to set an image''s opacity in QueryCellStyleInfo?

Thanks,

eric

[Administrator]

Hi Eric,

Try this code to set the optacity of the BackgroundImage in a cell.

Rectangle rect = new Rectangle(0,0,200,200);
private void gridQueryCellStyleInfo(object sender, GridTableCellStyleInfoEventArgs e)
{
if( e.TableCellIdentity.DisplayElement.Kind == DisplayElementKind.Record)
{
img = Image.FromFile("image.jpg");

//Create the Graphics object for the image.
Graphics gra = Graphics.FromImage(img);
ImageAttributes ia =new ImageAttributes();

//set the Gamma factor for optacity.
if( e.TableCellIdentity.ColIndex %2 == 0 )
ia.SetGamma(0.1f);

//Draw the Optacity image to imagegraphics.
gra.DrawImage(img,rect ,0,0,200,200,GraphicsUnit.Pixel,ia);

//set the image as BackgroundImage.
e.Style.BackgroundImage = img;
}
}

Here is a sample.
http://www.syncfusion.com/Support/user/uploads/ImageOpacityGrid_9329fe03.zip

Let me know if this helps.
Best Regards,
Haneef