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private void LoadButtonImage()
{
    if(buttonPicture != null)
        buttonPicture.Dispose();

    string templateFileName = "PicTemplate/RoundedRectangle.png";
    buttonPicture = new Bitmap(templateFileName);
}

This is my coding ..... parameter is not valid in runtime ... what can I do?

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1 Answer 1

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Most likely you're pointing to the wrong location. Try switching it to

new Bitmap(Server.MapPath(templateFileName)).
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