When I try to save an image I get the error “A generic error occurred in GDI+.”

Question

When I run this code, on the line I commented I always get an "A generic error occurred in GDI+." run time error

    private void ConstructFromResourceSaveAsGif()
    {
        Bitmap bmp1 = new Bitmap(typeof(Button), "Button.bmp");

        //This line
        bmp1.Save("c:\\button.gif", System.Drawing.Imaging.ImageFormat.Gif);
    }

Answer 1

You can just use the code

private void ConstructFromResourceSaveAsGif()
{
    Bitmap bmp1 = new Bitmap("Button.bmp");

    bmp1.Save("c:\\button.gif", System.Drawing.Imaging.ImageFormat.Gif);
}

and it will still work, unless you are trying to accomplish what @DanF is saying.

EDIT

Here's a quick app I used to test it out:

class Program
{
    static void Main(string[] args)
    {
        Bitmap bmp1 = new Bitmap("C:/donut.jpg");

        bmp1.Save("c:\\button.gif", System.Drawing.Imaging.ImageFormat.Gif);

        Console.WriteLine("Save Success");
        Console.Read();
    }
}

Answer 2

This constructor combines the namespace of the given type with the string name of the resource and looks for a match in the assembly manifest. For example you can pass in the Button type and Button.bmp to this constructor and it will look for a resource named System.Windows.Forms.Button.bmp.

Do you have a resource named that? If not, that'll be your problem. "A generic error occured..." is GDI+'s not very friendly way of throwing its hands in the air and saying "it broke but I'm not going to tell you why"