首先用code禁用标识（自动递增）整数主键 [英] Disabling identity (auto-incrementing) on integer primary key using code first

问题描述

我使用code第一种方法在ASP.NET MVC 3应用程序，并在模型中的所有整数主键（公众诠释标识{获取;集;} ）默认配置为自动递增的身份。如何禁用该功能，使的方式来手动输入主键整数？

I am using code first approach in a ASP.NET MVC 3 application and all integer primary keys in models (public int Id { get; set; }) are by default configured as an identity with auto-incrementing. How to disable this and enable a way to manually enter the integer for the primary key?

而实际情况是，编号整数具有特殊的意义，所以我想有他们在创建可选择的，后来编辑。如果万一整数不是在创建时给出它是自动递增，否则用于规定值那将是理想的。但是，编辑主要领域是我的第一需要。有没有办法做到这一点优雅的ASP.NET MVC 3？

The actual situation is that the Id integers have a special meaning and I would therefore like to have them choosable at creation and later editable. It would be ideal if in case the integer is not given at creation time it is auto-incremented, else the specified value is used. But editable primary fields is my primary need. Is there any way to do this elegantly in ASP.NET MVC 3?

推荐答案

使用这些数据的注释选项：

Use these data annotation options:

• [System.ComponentModel.DataAnnotations.KeyAttribute（）]


• <$c$c>[System.ComponentModel.DataAnnotations.DatabaseGenerated(System.ComponentModel.DataAnnotations.DatabaseGeneratedOption.None)]

• [System.ComponentModel.DataAnnotations.KeyAttribute()]
• [System.ComponentModel.DataAnnotations.DatabaseGenerated(System.ComponentModel.DataAnnotations.DatabaseGeneratedOption.None)]

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