缺少实体数据模型在VS 2012

本文介绍了缺少实体数据模型在VS 2012的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

添加一个新项目时，我无法找到实体数据模型数据选项卡下。

I cannot find the Entity Data Model under the 'Data' tab when adding a new item.

我已经看了几个问题和答案，有关此问题以及没有任何解决方案都工作过。

I have looked at several questions and answers, information on this and none of the solutions have worked.

我已经修好了，卸载和重新安装，请手动安装EF工具包并试图卸载所有相关VS程序。我也曾尝试创建几个新的项目，类库，Web项目下不同的.NET框架，它不存在。

I have repaired, uninstalled and reinstalled, installed the EF Tools package manually and tried uninstalling all VS related programs. I have also tried creating several new projects, Class Libraries, Web Projects under different .NET frameworks and it isn't there.

主营项目：Visual Studio的2012年，类库项目.NET 4.0

Main project: Visual Studio 2012, Class Library Project .NET 4.0

推荐答案

我使用这个链接更新的Visual Studio 2012：的 www.microsoft/visualstudio/eng/downloads#d-visual-studio -2012更新。本次更新后，实体数据模型选项被添加到数据标签。

I updated Visual Studio 2012 using this link: www.microsoft/visualstudio/eng/downloads#d-visual-studio-2012-update. After this update, the "Entity Data Model" option was added to the data tab.