Invalid Parameters Execption using sequence

Question

I have the following code (where res.shuffle is an image, ein.Shuffle is a bool and kontrast is the kontrast-color of BackColor):

using (Bitmap img = Code.EditImageColor(res.shuffle, (ein.Shuffle ? BackColor : kontrast)))
{
    pictureBox1.Image = img;
    thumbnailToolbarButton1.Icon = Icon.FromHandle(img.GetHicon());
}

Here is the method for the image processing (in Code class):

public static Bitmap EditImageColor(Image img, Color color)
{
    Bitmap scrBitmap = new Bitmap(img);
    Color oldcolor;
    Bitmap newBitmap = new Bitmap(scrBitmap.Width, scrBitmap.Height);

    for (int i = 0; i < scrBitmap.Width; i++)
    {
        for (int j = 0; j < scrBitmap.Height; j++)
        {
            oldcolor = scrBitmap.GetPixel(i, j);
            newBitmap.SetPixel(i, j, Color.FromArgb(oldcolor.A, color));
        }
    }

    return newBitmap;
}

But every time I run it, it says

System.ArgumentExeption (additional: Invalid Parameters)

pointing to the Application.Run(new Form1()); code block in my Program.cs file.

StackTrace: An unhandled exception of type 'System.ArgumentException' occurred in System.Drawing.dll.

I also tried it with pictureBox1.Image or thumbnailToolbarButton1.Icon standing alone in the statement.

Why is this caused? And how to prevent it to cause?

Thanks for any help! :D

PS:

Sorry for any typos and if I've written something "contently wrong", due to I'm new to StackOverflow.

Answer 1

So, very simple answer:

when the bitmap was set as image of pictureBox1, it gets disposed. (Thanks to @juharr for commenting this) Caused by disposing, the image gets invalid for the pictureBox & the exception will be thrown.

How to prevent this:

Don't use a using statement, just always use the same bitmap.

Bitmap imga = ...;
pictureBox0.Image = imga;
pictureBox1.Image = imga;
pictureBox2.Image = imga;
pictureBox3.Image = imga;
imga = ...;
pictureBox4.Image = imga;
pictureBox5.Image = imga;
pictureBox6.Image = imga;
pictureBox7.Image = imga;
...