How to programmatically set an icon that is in resources in C#

Question

How to programmatically set an icon that is in resources in C#

Spamzilla 41

I'm trying to programmatically set my program's icons in code using an icon in the resources in C#. This code here doesn't work:

System.ComponentModel.ComponentResourceManager resources2 = new System.ComponentModel.ComponentResourceManager(typeof(TLS_FormMain));
this.Icon = (Icon)(resources2.GetObject("TLS_Icon_Green.ico"));

Neither does this code:

Icon programIcon = new Icon(typeof(TLS_FormMain), "TLS_Icon_Green.ico");
this.Icon = programIcon;

Any solutions?

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Answer 1

Castorix31 90,686

With an icon resource named Test2, this simple line works for me :

 this.Icon = Properties.Resources.Test2;

Spamzilla 41 Reputation points

2022-10-21T12:02:46.457+00:00

Thank you this is working now.
Duperron, Jean-Marc (TR Technology) 15 Reputation points

2025-03-07T11:50:25.8866667+00:00

This is not working because the icon that you add in the resources will give you back a byte[], when you compile the compiler will give you the error CS0029 Cannot implicitly convert typ 'byte[]' to 'System.Windows.Media.ImageSource'.

Duperron, Jean-Marc (TR Technology) 15

This will work

public class ByteImageConverter
{
    public static ImageSource ByteToImage(byte[] imageData)
    {
        BitmapImage biImg = new BitmapImage();
        MemoryStream ms = new MemoryStream(imageData);
        biImg.BeginInit();
        biImg.StreamSource = ms;
        biImg.EndInit();

        ImageSource imgSrc = biImg as ImageSource;

        return imgSrc;
    }
}

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How to programmatically set an icon that is in resources in C#

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