BitmapToImageSourceConverter.cs

namespace DiscordRPforVS
{
    using System;
    using System.Drawing;
    using System.Drawing.Imaging;
    using System.Globalization;
    using System.Windows.Data;
    using System.Windows.Media;
    using System.Windows.Media.Imaging;

    public class BitmapToImageSourceConverter : IValueConverter
    {
        public Object Convert(Object value, Type targetType, Object parameter, CultureInfo culture)
        {
            if (!(value is Bitmap bitmap))
                return null;

            Rectangle rect = new Rectangle(0, 0, bitmap.Width, bitmap.Height);

            BitmapData bitmapData = bitmap.LockBits(rect, ImageLockMode.ReadWrite, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
            bitmap.UnlockBits(bitmapData);
            return BitmapSource.Create(bitmap.Width, bitmap.Height, bitmap.HorizontalResolution, bitmap.VerticalResolution, PixelFormats.Bgra32, null, bitmapData.Scan0, rect.Width * rect.Height * 4, bitmapData.Stride);
        }

        public Object ConvertBack(Object value, Type targetType, Object parameter, CultureInfo culture) => null;
    }
}