could not type a string on jpg image

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Hellow
in Form1 i add pictureBox1 it contains an image =Tulips.jpg , i want to draw a string at location 10,20
but i could not

C#

using System.Drawing.Imaging;
//...
//...
        Image MyImage;
        //....
        //.....
        private void Form1_Load(object sender, EventArgs e)
        {
            MyImage = Image.FromFile("Tulips.jpg");
            pictureBox1.Image = MyImage;
        }
        private void button1_Click(object sender, EventArgs e)
        {
            Graphics dc = Graphics.FromImage(pictureBox1.Image);//MyImage);
dc.DrawString("hellow", new Font("Arial", 12), new SolidBrush(Color.Black), 10, 20);//<----
            dc.Dispose();
        }

Posted 17-Aug-14 1:07am

Engineer khalid

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[no name] 17-Aug-14 7:46am

http://stackoverflow.com/questions/849359/how-to-draw-text-on-picturebox

2 solutions

Solution 2

Hi
Use

C#

private void pictureBox1_Paint(object sender, PaintEventArgs e)
{
//your code to draw string
}

Posted 17-Aug-14 18:37pm

Balav4

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OriginalGriff · Accepted Answer · 2014-08-17T02:10:00

The code you show should draw text on an image - but it won't show in the display, or be reflected in the image file.
In order to see the image with the text, add

C#

pictureBox1.Invalidate();

after your draw code.

In order to change the image file, you will have to save the image to a new file.

BTW: you should also dispose the Font and Brush objects that you create.