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Combine controls into one image to load into RadCarousel

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Rob Hedgpeth
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Rob Hedgpeth asked on 28 Jun 2011, 03:44 PM
This question may belong in a different WinForms controls forum. If so, I apologize.

Ultimately, I am wanting to show a carousel full of RadGridViews, but for performance's sake I am converting the RadGridView's into RadImageItems to be loaded into the carousel.

I'd like to be able to put a label above the RadGridView as a title for the grid. So far I've tried adding a RadLabel and RadGridView to a RadItemsContainer, and then using the "GetAsBitmap" function to no avail.  

RadImageItem image1 = new RadImageItem();
image1.Image = rl.RootElement.GetAsBitmap(Brushes.White, 0, new SizeF(1, 1));
rl.RootElement.GetAsBitmap(Brushes.White, 0, new SizeF(1, 1));
 
RadImageItem image2 = new RadImageItem();
image2.Image = grid.RootElement.GetAsBitmap(Brushes.White, 0, new SizeF(1, 1));
 
RadItemsContainer ric = new RadItemsContainer();
ric.Items.Add(image1);
ric.Items.Add(image2);
 
RadImageItem image3 = new RadImageItem();
image3.Image = ric.GetAsBitmap(Brushes.White, 0, new SizeF(1, 1));
image3.ImageKey = imageKey;

(rl = previously declared RadLabel, grid = previously declared RadGridView)

Thanks,

Rob

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Peter
Telerik team
answered on 01 Jul 2011, 09:44 AM
Hello Rob,

Thank you for the question.

We have never tested such a scenario before, but I would like to suggest that you to put a RadGridView and RadLabel into a Panel and call Panel.GetAsBitmap method.

Another possible solution is to try to combine two bitmaps - paint objects on different layers - here is an interesting article on how to do this.

I hope this helps.

Greetings,
Peter
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Rob Hedgpeth
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answered on 01 Jul 2011, 05:07 PM
Hey Peter,

Thanks for your response.

In case anyone ever has this same issue I was able to solve my problem by creating a bitmap of both the RadGridView and RadLabel, adding the images to a new Bitmap object, and then setting the RadImageItem's Image property to the new Bitmap.

//Previously instantiated grid
grid.BeginInit();
grid.BindingContext = new BindingContext();
grid.EndInit();
grid.LoadElementTree();
 
RadLabel descriptionLabel = new RadLabel();
descriptionLabel.Text = "Success!";
descriptionLabel.LoadElementTree();
    
Bitmap gridBitmap = grid.RootElement.GetAsBitmap(Brushes.White, 0, new SizeF(1, 1));
Bitmap labelBitmap = descriptionLabel.RootElement.GetAsBitmap(Brushes.White, 0, new SizeF(1, 1));
 
Bitmap bmp = new Bitmap(x, y, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
 
using (Graphics grfx = Graphics.FromImage(bmp))
{
   grfx.DrawImage(labelBitmap, 0, 0);
   grfx.DrawImage(gridBitmap, 0, 15);
}
       
RadImageItem image = new RadImageItem();
image.Image = bmp;

Thanks again,

Rob
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Peter
Telerik team
answered on 06 Jul 2011, 01:41 PM
Hello Rob,

Thank you for the sharing this solution with the community.

Regards,
Peter
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