Question

I have panel and various controls on it. I would like to save an image of this panel into a file, how can I do this ?

Ineed to do something like screenshot, but I need just image of certain panel in my application and I want to do this on a button click in my app.

Best regards, Primoz

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EDIT:
I also draw on this panel using this code

            Graphics g = chartTemperature.CreateGraphics();    
            g.DrawLine(p, prevPoint, e.Location);
            prevPoint = e.Location;

But then I don’t get this into image. Why, and how to fix this ?

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EDIT 2:

namespace Grafi
{
    public partial class Form1 : Form
    {

        bool isDrawing = false;
        Point prevPoint;

        public Form1()
        {
            InitializeComponent();
        }

        private void chartTemperature_MouseDown(object sender, MouseEventArgs e)
        {
            isDrawing = true;
            prevPoint = e.Location;
        }

        private void chartTemperature_MouseMove(object sender, MouseEventArgs e)
        {
            Pen p = new Pen(Color.Red, 2); 
            if (isDrawing)
            {
                Graphics g = chartTemperature.CreateGraphics();    
                g.DrawLine(p, prevPoint, e.Location);
                prevPoint = e.Location;

                numOfMouseEvents = 0;              
            }
            p.Dispose();
        }

        private void chartTemperature_MouseUp(object sender, MouseEventArgs e)
        {
            isDrawing = false;
        }
    }
} 

This is my drawing code to draw a custom line onto a Chart. Can you please help me to do it proper way ?

Answer 1

Use the Control.DrawToBitmap() method. For example:

    private void button1_Click(object sender, EventArgs e) {
        using (var bmp = new Bitmap(panel1.Width, panel1.Height)) {
            panel1.DrawToBitmap(bmp, new Rectangle(0, 0, bmp.Width, bmp.Height));
            bmp.Save(@"c:\temp\test.png");
        }
    }