在C＃中比较对象属性

我一直在寻找一段代码，这些代码可以做类似的事情来帮助编写单元测试。这是我最终使用的内容。

public static bool PublicInstancePropertiesEqual<T>(T self, T to, params string[] ignore) where T : class   {     if (self != null && to != null)     {        Type type = typeof(T);        List<string> ignoreList = new List<string>(ignore);        foreach (System.Reflection.PropertyInfo pi in type.GetProperties(System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Instance))        {if (!ignoreList.Contains(pi.Name)){   object selfValue = type.GetProperty(pi.Name).GetValue(self, null);   object toValue = type.GetProperty(pi.Name).GetValue(to, null);   if (selfValue != toValue && (selfValue == null || !selfValue.Equals(toValue)))   {      return false;   }}        }        return true;     }     return self == to;  }

编辑：

与上面相同的代码，但使用LINQ和Extension方法：

public static bool PublicInstancePropertiesEqual<T>(this T self, T to, params string[] ignore) where T : class{    if (self != null && to != null)    {        var type = typeof(T);        var ignoreList = new List<string>(ignore);        var unequalProperties = from pi in type.GetProperties(BindingFlags.Public | BindingFlags.Instance) where !ignoreList.Contains(pi.Name) && pi.GetUnderlyingType().IsSimpleType() && pi.GetIndexParameters().Length == 0 let selfValue = type.GetProperty(pi.Name).GetValue(self, null) let toValue = type.GetProperty(pi.Name).GetValue(to, null) where selfValue != toValue && (selfValue == null || !selfValue.Equals(toValue)) select selfValue;        return !unequalProperties.Any();    }    return self == to;}public static class TypeExtensions   {      /// <summary>      /// Determine whether a type is simple (String, Decimal, DateTime, etc)       /// or complex (i.e. custom class with public properties and methods).      /// </summary>      /// <see cref="http://stackoverflow.com/questions/2442534/how-to-test-if-type-is-primitive"/>      public static bool IsSimpleType(         this Type type)      {         return type.IsValueType || type.IsPrimitive || new[] {    typeof(String),    typeof(Decimal),    typeof(DateTime),    typeof(DateTimeOffset),    typeof(TimeSpan),    typeof(Guid) }.Contains(type) || (Convert.GetTypeCode(type) != TypeCode.Object);      }      public static Type GetUnderlyingType(this MemberInfo member)      {         switch (member.MemberType)         { case MemberTypes.Event:    return ((EventInfo)member).EventHandlerType; case MemberTypes.Field:    return ((FieldInfo)member).FieldType; case MemberTypes.Method:    return ((MethodInfo)member).ReturnType; case MemberTypes.Property:    return ((PropertyInfo)member).PropertyType; default:    throw new ArgumentException    (       "Input MemberInfo must be if type EventInfo, FieldInfo, MethodInfo, or PropertyInfo"    );         }      }   }