Synchronize the Net40

Net40/HandyControl_Net40/Tools/Extension/EnumerableExtension.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace HandyControl.Tools.Extension
+{
+    public static class EnumerableExtension
+    {
+        public static IEnumerable<TSource> Do<TSource>(this IEnumerable<TSource> source, Action<TSource> predicate)
+        {
+            var enumerable = source as IList<TSource> ?? source.ToList();
+            foreach (var item in enumerable)
+            {
+                predicate.Invoke(item);
+            }
+
+            return enumerable;
+        }
+    }
+}