StringLength VS MAXLENGTH属性ASP.NET MVC实体框架EF code首先 [英] StringLength vs MaxLength attributes ASP.NET MVC with Entity Framework EF Code First

问题描述

是什么在行为的差异 [最大长度] 和 [StringLength] 属性？

What is the difference in behavior of [MaxLength] and [StringLength] attributes?

这是相同的，有些多余？

As far as I can tell (with the exception that [MaxLength] can validate the maximum length of an array) these are identical and somewhat redundant?

推荐答案

<一个href=\"http://msdn.microsoft.com/en-us/library/system.componentmodel.dataannotations.maxlengthattribute%28v=vs.103%29.aspx\">MaxLength用于实体框架来决定如何大，以使一个字符串值字段时，它会创建数据库。

MaxLength is used for the Entity Framework to decide how large to make a string value field when it creates the database.

从MSDN：

指定数组的最大长度
  还是允许在属性字符串数据。

Specifies the maximum length of array or string data allowed in a property.

<一个href=\"http://msdn.microsoft.com/en-us/library/system.componentmodel.dataannotations.stringlengthattribute.aspx\">StringLength是将被用于用户输入的验证数据注解

StringLength is a data annotation that will be used for validation of user input.

从MSDN：

指定的最小和最大
  字符长度被允许
  在一个数据字段

Specifies the minimum and maximum length of characters that are allowed in a data field.

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