添加项目文件。

Szmedi.Toolkit.Revit/Extensions/BitmapExtensions.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Windows;
+using System.Windows.Interop;
+using System.Windows.Media.Imaging;
+
+namespace Szmedi.Toolkit.Extensions
+{
+    public static class BitmapExtensions
+    {
+        public static BitmapSource ToBitmapSource(this System.Drawing.Bitmap bitmap)
+        {
+            return Imaging.CreateBitmapSourceFromHBitmap(bitmap.GetHbitmap(), IntPtr.Zero, Int32Rect.Empty, BitmapSizeOptions.FromEmptyOptions());
+        }
+    }
+}