Need help calling a method

Question

I am trying to upload a picture to a winform and then show a thumbnail. I tried adding the functionality to my btnUpload_click method but it would not allow me to set PaintEventArgs as an eventhandler. So to remedy this, I created another method but now need to know how to call it.

private void btnUpload_Click(object sender, EventArgs e)
{}

public void getImage(PaintEventArgs ex)
{
    Image.GetThumbnailImageAbort myCallback =
    new Image.GetThumbnailImageAbort(ThumbnailCallback);

    OpenFileDialog open = new OpenFileDialog();
    // image filters
    open.Filter = "Image Files(*.jpg; *.jpeg; *.gif; *.bmp)|*.jpg; *.jpeg; *.gif; *.bmp";
    if (open.ShowDialog() == DialogResult.OK)
    {
        // display image in picture box
        upload = new Bitmap(open.FileName);

        pictureBox1.Image.GetThumbnailImage(114, 108, myCallback, IntPtr.Zero);
        ex.Graphics.DrawImage(upload, 150, 75);
    }
}

Thank you for your assistance

Answer 1

You don't need PaintEventArgs for a Graphics instance. Just change the code to work inside the button click:

Image.GetThumbnailImageAbort myCallback =
    new Image.GetThumbnailImageAbort(ThumbnailCallback);

OpenFileDialog open = new OpenFileDialog();

// image filters
open.Filter = "Image Files(*.jpg; *.jpeg; *.gif; *.bmp)|*.jpg; *.jpeg; *.gif; *.bmp";
if (open.ShowDialog() == DialogResult.OK)
{
    // display image in picture box
    upload = new Bitmap(open.FileName);

    pictureBox1.Image.GetThumbnailImage(114, 108, myCallback, IntPtr.Zero);
    this.CreateGraphics().DrawImage(upload, 150, 75);
}