这是有史以来最艰难的一次提交，不生则死！

OpenAuth.Repository/Domain/UserExt.cs

@@ -0,0 +1,19 @@
+using System;
+
+namespace OpenAuth.Domain
+{
+	/// <summary>
+	/// 用户ID
+	/// </summary>
+	public static class UserExt
+	{
+	    public static void  CheckPassword(this User user, string password)
+	    {
+	        if (user.Password != password)
+	        {
+	            throw  new Exception("密码错误");
+	        }
+	    }
+
+	}
+}