How to run example requiring Button.bmp?

Question

I'm trying to run the Windows Desktop example for constructor Bitmap(Type, String) as shown in Microsoft documentation https://learn.microsoft.com/en-us/dotnet/api/system.drawing.bitmap.-ctor?view=windowsdesktop-8.0#system-drawing-bitmap-ctor(system-type-system-string). When I run it in Visual Studio 2022, I get the exception shown below.

My code is shown below.

namespace BitmapCtorOL8;

public partial class FormBMCtorOL8 : Form
{
    public string path   = @"c:\users\...documents\filescache\outputs\";

    public FormBMCtorOL8 ()
    {
        InitializeComponent ();
    }

    private void OnPaintMainForm (object sender, PaintEventArgs e)
    {
        ConstructFromResourceSaveAsGif (e);
    }
    private void ConstructFromResourceSaveAsGif (PaintEventArgs e)
    {

        // Construct a bitmap from the button image resource.
        Bitmap bmp1 = new Bitmap (typeof (Button), "Button.bmp");

        // Save the image as a GIF.
        bmp1.Save (path + "button.gif",
                   System.Drawing.Imaging.ImageFormat.Gif);

        // Construct a new image from the GIF file.
        Bitmap bmp2 = new Bitmap (path + "button.gif");

        // Draw the two images.
        e.Graphics.DrawImage (bmp1, new Point (10, 10));
        e.Graphics.DrawImage (bmp2, new Point (10, 40));

        // Dispose of the image files.
        bmp1.Dispose ();
        bmp2.Dispose ();
    }
}

How do I get the application find Button.bmp?  I can create a Button.bmp, but where do I store it?

Answer 1

Hi,@Nicholas Piazza. Welcome Microsoft Q&A. To make the code work, you'll need to add the "Button.bmp" image as a resource in your project. Here's how you could add the "Button.bmp" image as a resource in your project:

Add the image as a resource in your project:

• In Visual Studio, open your project and go to the Solution Explorer.
• Right-click on your project name and select "Properties."
• In the properties window, go to the "Resources" tab.
• Click on the "Add Resource" dropdown and choose "Add Existing File..."
• Browse to the location where you saved the "Button.bmp" image, select it, and click "Open."

Access the image resource in your code:

• Once you've added the "Button.bmp" image as a resource, it will be accessible in your code as a Bitmap object. You can use the Properties.Resources class to access the resource and create the Bitmap.

   private void ConstructFromResourceSaveAsGif(PaintEventArgs e)
        {
         
           // Bitmap bmp1 = new Bitmap(typeof(Button), "Button.bmp");
            Bitmap bmp1 = Properties.Resources.Button;
            
            bmp1.Save(path + "button.gif",
                       System.Drawing.Imaging.ImageFormat.Gif);
          
           Bitmap bmp2 = new Bitmap(path + "8.gif");

            e.Graphics.DrawImage(bmp1, new Point(10, 10));
            e.Graphics.DrawImage(bmp2, new Point(10, 40));
            
            bmp1.Dispose();
           bmp2.Dispose();

        }

---

If the response is helpful, please click "Accept Answer" and upvote it.

Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.