无法将汇编引用添加到项目

本文介绍了无法将汇编引用添加到项目的处理方法，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

我在Framework 4.5.1上有一个网站。 编译时，缺少System.Data.DataExtensions的程序集引用错误。

I have a web site on Framework 4.5.1. When I compile I have a missing assembly reference error for System.Data.DataExtensions.

所以我要添加引用，在对话框关闭的框内打钩，重新编译。相同的程序集再次丢失。返回参考，程序集不再被打勾。它确实将其添加到web.config中，但引用始终消失。

So I go to add a reference tick the box close the dialog , recompile. Same assembly is missing again. Go back to references and the assembly is no longer ticked. It does add it the the web.config but the reference always disappears.

我遇到了此链接类似问题 但是解决方案仅使用System.Data而不是System.Data.DataExtensions。但是我的using语句已经仅仅是System.Data。

I came across this link similar issue but the solution was only having using System.Data instead of using System.Data.DataExtensions. But my using statement are already only System.Data.

任何人都可以提供帮助吗？

Can anyone assist ?

推荐答案

好，看来当项目迁移到4.5.1框架时，Web配置文件并未更新，并且仍然包含对3.0框架的引用。 这就是阻止添加程序集引用的原因。

Ok it seems that when the project was migrated to 4.5.1 framework the web config file wasn't update and still contains a reference to the 3.0 framework. That is what was is preventing the assembly reference being added.

升级框架似乎不会使用所做的更改来更新Web配置。

Upgrading the framework seems not to update the web config with the changes.