C# winform :save 2 panel as one image

Question

0.00/5 (No votes)

See more:

How do i actually save 2 panel as one image ? currently, this is my code but it shown error : "cannot convert from system.window.form.panel to system.drawing.image" .

What I have tried:

Bitmap bitmap = new Bitmap(cap_top.Width + cap_btm.Width, Math.Max(cap_top.Height, cap_btm.Height));
using (Graphics g = Graphics.FromImage(bitmap))
{
    g.DrawImage(cap_top, 0, 0);
    g.DrawImage(cap_btm, cap_top.Width, 0);

}

Posted 12-Sep-17 15:28pm

Asyraf Patt

Updated 12-Sep-17 17:29pm

Add a Solution

3 solutions

Solution 1

Ummm...the error message is quite clear. Looking at the documentation for DrawImage, it does indeed expect that first parameter to be an Image, NOT a Control, which is what a Panel is.

So, the Panel controls cannot be used there. How are you supplying an image of some kind to the Panel controls? If they are Bitmap objects, you just pass those in to the DrawImage calls, not the Panel controls.

Posted 12-Sep-17 16:09pm

Dave Kreskowiak

Solution 2

The error is pretty self explanatory. TO use an analogy:

Quote:
You can not fit a square peg in a round hole.

This Link however shows you how to do it with one panel: c# - Draw on Panel, save as Bitmap - Stack Overflow[^]

To do it with two Panels would be to first paint one bitmap over the other before saving.

Posted 12-Sep-17 16:13pm

Graeme_Grant

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

User 7407470 · Accepted Answer · 2017-09-12T17:29:00

How about Control.DrawToBitmap Method (Bitmap, Rectangle) (System.Windows.Forms)[^] ?

C#

Bitmap bitmap = new Bitmap(cap_top.Width + cap_btm.Width, Math.Max(cap_top.Height, cap_btm.Height));
cap_top.DrawToBitmap(bitmap, new Rectangle(0, 0, cap_top.Width, cap_top.Height));
cap_btm.DrawToBitmap(bitmap, new Rectangle(cap_top.Width, 0, cap_btm.Width, cap_btm.Height));