a

01.扩展/Extensions/ObjectExtension.cs

@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace ExtensionMethods
+{
+    public static class ObjectExtension
+    {
+        public static string ToSafeTurnString(this object obj)
+        {
+            if (obj == null)
+                return string.Empty;
+
+            return obj.ToString();
+        }
+    }
+}