CODEWITHSUNDEEP
c#.netwinforms
user1417294
user1417294

Reputation: 314

RichTextBox doesn't appear when content is exported as Image

I have a Panel where the contents are added dynamically and exported as an image file. I export the content as image using the following code below.

 Bitmap tempBmp = new Bitmap(pnlCanvas.Width, pnlCanvas.Height);
 pnlCanvas.DrawToBitmap(tempBmp, new Rectangle(0, 0, pnlCanvas.Width, pnlCanvas.Height));
 tempBmp.Save(fileName);

In a particular case i have a RichTextBox control added to the panel. I found that the control is not seen when exported.

I am not sure what goes wrong. Please guide me what should be done.

Thanks in Advance, K

Upvotes: 1

Views: 232

Answers (3)

user1417294
user1417294

Reputation: 314

Just succeeded with exactly what i was looking for. I am answering my own question so that it could help someone looking for the same.

Sample code to capture the ActiveX controls and Export as Image. 

Rectangle ctrlRect = myControl.RectangleToScreen(myControl.ClientRectangle);
Bitmap myImage = new Bitmap(ctrlRect.Width,ctrlRect.Height,PixelFormat.Format32bppArgb);
Graphics myGraphics = Graphics.FromImage(myImage);
myGraphics.CopyFromScreen(ctrlRect.Location, Point.Empty, myControl.Size);
myImage.Save("sample.png");

Upvotes: 0

aliassce
aliassce

Reputation: 1197

As it is stated MSDN DrawToBitmap doesn't work with RichTextBox. Try painting the content using GDI+ manually.

Upvotes: 3

ISeeSounds
ISeeSounds

Reputation: 117

Check if the control is actually there, is it disposed or just invisible. Try adding some value to it and check if it returns the value with variable or gives you error (if it's gone). That's my ideas :)

Upvotes: 0

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