代码调试错误 未能找到System.Web.UI.Compatibility.CompareValidator
今天看了一个网上下载来的源代码，调试的时候出现了错误：
“
/
AjaxMyPage”应用程序中的服务器错误。
--------------------------------------------------------------------------------
配置错误
说明: 在处理向该请求提供服务所需的配置文件时出错。请检查下面的特定错误详细信息并适当地修改配置文件。
分析器错误消息: 未能从程序集“System.Web.Extensions, Version = 1.0 . 61025.0 , Culture = neutral, PublicKeyToken = 31bf3856ad364e35”中加载类型“System.Web.UI.Compatibility.CompareValidator”。
源错误:
行 34 : < add tagPrefix = " asp " namespace = " System.Web.UI.WebControls " assembly = " System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35 " /></ controls >
行 35 : < tagMapping >
行 36 : < add tagType = " System.Web.UI.WebControls.CompareValidator " mappedTagType = " System.Web.UI.Compatibility.CompareValidator, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35 " />
行 37 : < add tagType = " System.Web.UI.WebControls.CustomValidator " mappedTagType = " System.Web.UI.Compatibility.CustomValidator, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35 " />
行 38 : < add tagType = " System.Web.UI.WebControls.RangeValidator " mappedTagType = " System.Web.UI.Compatibility.RangeValidator, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35 " />
源文件: D:\Nong\待看代码\三层个人网站小程序(Ajax)\AjaxMyPage\web.config 行: 36
--------------------------------------------------------------------------------
版本信息: Microsoft .NET Framework 版本: 2.0 . 50727.4927 ; ASP.NET 版本: 2.0 . 50727.4927
--------------------------------------------------------------------------------
配置错误
说明: 在处理向该请求提供服务所需的配置文件时出错。请检查下面的特定错误详细信息并适当地修改配置文件。
分析器错误消息: 未能从程序集“System.Web.Extensions, Version = 1.0 . 61025.0 , Culture = neutral, PublicKeyToken = 31bf3856ad364e35”中加载类型“System.Web.UI.Compatibility.CompareValidator”。
源错误:
行 34 : < add tagPrefix = " asp " namespace = " System.Web.UI.WebControls " assembly = " System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35 " /></ controls >
行 35 : < tagMapping >
行 36 : < add tagType = " System.Web.UI.WebControls.CompareValidator " mappedTagType = " System.Web.UI.Compatibility.CompareValidator, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35 " />
行 37 : < add tagType = " System.Web.UI.WebControls.CustomValidator " mappedTagType = " System.Web.UI.Compatibility.CustomValidator, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35 " />
行 38 : < add tagType = " System.Web.UI.WebControls.RangeValidator " mappedTagType = " System.Web.UI.Compatibility.RangeValidator, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35 " />
源文件: D:\Nong\待看代码\三层个人网站小程序(Ajax)\AjaxMyPage\web.config 行: 36
--------------------------------------------------------------------------------
版本信息: Microsoft .NET Framework 版本: 2.0 . 50727.4927 ; ASP.NET 版本: 2.0 . 50727.4927
解决方法：
在配置文件中把下面这段删了
<
tagMapping
>
< add tagType = " System.Web.UI.WebControls.CompareValidator " mappedTagType = " System.Web.UI.Compatibility.CompareValidator, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35 " />
< add tagType = " System.Web.UI.WebControls.CustomValidator " mappedTagType = " System.Web.UI.Compatibility.CustomValidator, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35 " />
< add tagType = " System.Web.UI.WebControls.RangeValidator " mappedTagType = " System.Web.UI.Compatibility.RangeValidator, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35 " />
< add tagType = " System.Web.UI.WebControls.RegularExpressionValidator " mappedTagType = " System.Web.UI.Compatibility.RegularExpressionValidator, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35 " />
< add tagType = " System.Web.UI.WebControls.RequiredFieldValidator " mappedTagType = " System.Web.UI.Compatibility.RequiredFieldValidator, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35 " />
< add tagType = " System.Web.UI.WebControls.ValidationSummary " mappedTagType = " System.Web.UI.Compatibility.ValidationSummary, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35 " />
</ tagMapping >
< add tagType = " System.Web.UI.WebControls.CompareValidator " mappedTagType = " System.Web.UI.Compatibility.CompareValidator, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35 " />
< add tagType = " System.Web.UI.WebControls.CustomValidator " mappedTagType = " System.Web.UI.Compatibility.CustomValidator, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35 " />
< add tagType = " System.Web.UI.WebControls.RangeValidator " mappedTagType = " System.Web.UI.Compatibility.RangeValidator, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35 " />
< add tagType = " System.Web.UI.WebControls.RegularExpressionValidator " mappedTagType = " System.Web.UI.Compatibility.RegularExpressionValidator, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35 " />
< add tagType = " System.Web.UI.WebControls.RequiredFieldValidator " mappedTagType = " System.Web.UI.Compatibility.RequiredFieldValidator, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35 " />
< add tagType = " System.Web.UI.WebControls.ValidationSummary " mappedTagType = " System.Web.UI.Compatibility.ValidationSummary, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35 " />
</ tagMapping >