转载自：http://blog.csdn.net/gnicky/article/details/7355721 Install-Package JQuery Conflict occurred 问题
在VS.net 2010中，跟前面的主题一样，Becomplex, but be flexible,善于利用工具，非常重要了。
打开Tool-Library package manager->packagemanager console。
PM> Install-Package JQuery
'jQuery 1.7.1' already installed.
Install-Package : Conflict occurred. 'jQuery 1.5.1' referenced but requested 'jQuery 1.7.1'. 'jQuery.vsdoc 1.5.1, jQuery.Validati
on 1.8.0, jQuery.UI.Combined 1.8.11' depend on 'jQuery 1.5.1'.
At line:1 char:16
+ Install-Package <<<< JQuery
+ CategoryInfo : NotSpecified: (:) [Install-Package], InvalidOperationException
+ FullyQualifiedErrorId : NuGetCmdletUnhandledException,NuGet.PowerShell.Commands.InstallPackageCommand
//根据以上的提示，要么把其它存在依赖的东西删除，要么更改升级顺序
根据一段时间的测试，发现按照如下的顺序来做，应该可以解决以上的问题。
update-package jQuery.UI.Combined update-package jQuery.Validation update-package Moderniz update-package jQuery.vsdoc update-package jQuery
This order allows jquery to update via nuGet correctly. I hope this helpsother frustrated nuGet noobs.
PM> get-package Id Version Description -- ------- ----------- EntityFramework 4.3.1 Entity Framework is Microsoft’s recommended data access technolo... jQuery 1.5.1 jQuery is a new kind of JavaScript Library.... jQuery 1.7.1 jQuery is a new kind of JavaScript Library.... jQuery.UI.Combined 1.8.11 jQuery UI is an open source library of interface components — in... jQuery.Validation 1.8.0 This jQuery plugin makes simple clientside form validation trivi... jQuery.vsdoc 1.5.1 Includes vsdoc files for jQuery 1.5.1 that provide IntelliSense ... Modernizr 1.7 Modernizr adds classes to the <html> element which allow you to ...
最后，可以通过Packages文件来查看各种版本：
<?xml version="1.0" encoding="utf-8"?> <packages> <package id="EntityFramework" version="4.3.1" /> <package id="jQuery.UI.Combined" version="1.8.18" /> <package id="jQuery.Validation" version="1.9" /> <package id="Modernizr" version="2.5.3" /> <package id="jQuery.vsdoc" version="1.6" /> <package id="jQuery" version="1.7.1" /> </packages>