克隆对象
/// <summary>
/// 对象Clone
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="t"></param>
/// <returns></returns>
public static T DeepCloneObject<T>(this T t) where T : class
{
T model = System.Activator.CreateInstance<T>(); //实例化一个T类型对象
PropertyInfo[] propertyInfos = model.GetType().GetProperties(); //获取T对象的所有公共属性
foreach (PropertyInfo propertyInfo in propertyInfos)
{
//判断值是否为空,如果空赋值为null见else
if (propertyInfo.PropertyType.IsGenericType &&
propertyInfo.PropertyType.GetGenericTypeDefinition().Equals(typeof(Nullable<>)))
{
//如果convertsionType为nullable类,声明一个NullableConverter类,
//该类提供从Nullable类到基础基元类型的转换
NullableConverter nullableConverter = new NullableConverter(propertyInfo.PropertyType);
//将convertsionType转换为nullable对的基础基元类型
propertyInfo.SetValue(model, Convert.ChangeType(propertyInfo.GetValue(t),
nullableConverter.UnderlyingType), null);
}
else
{
propertyInfo.SetValue(model, Convert.ChangeType(propertyInfo.GetValue(t),
propertyInfo.PropertyType), null);
}
}
return model;
}
克隆集合
/// <summary>
/// List的Clone
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="tList"></param>
/// <returns></returns>
public static IList<T> DeepCloneList<T>(this IList<T> tList) where T : class
{
IList<T> listNew = new List<T>();
foreach (var item in tList)
{
T model = System.Activator.CreateInstance<T>(); //实例化一个T类型对象
PropertyInfo[] propertyInfos = model.GetType().GetProperties(); //获取T对象的所有公共属性
foreach (PropertyInfo propertyInfo in propertyInfos)
{
//判断值是否为空,如果空赋值为null见else
if (propertyInfo.PropertyType.IsGenericType &&
propertyInfo.PropertyType.GetGenericTypeDefinition().Equals(typeof(Nullable<>)))
{
// 如果convertsionType为nullable类,声明一个NullableConverter类,
// 该类提供从Nullable类到基础基元类型的转换
NullableConverter nullableConverter = new NullableConverter(propertyInfo.PropertyType);
//将convertsionType转换为nullable对的基础基元类型
propertyInfo.SetValue(model, Convert.ChangeType(propertyInfo.GetValue(item),
nullableConverter.UnderlyingType), null);
}
else
{
propertyInfo.SetValue(model, Convert.ChangeType(propertyInfo.GetValue(item),
propertyInfo.PropertyType), null);
}
}
listNew.Add(model);
}
return listNew;
}