今天将微软最新的AjaxControlTookit[40412版]下载下来进行研究，本以为很容易看到正常项目页面。没想到却费了很多周折。
首先，下载后，解压开来，运行环境一加载项目就报出错误：缺少AjaxMin,于是将AjaxMin4下载下来，安装后重新加载项目，OK，一切正常。
之后编译通过。页面加载...
这时又出现错误提示：
代码
Configuration Error
Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.
Parser Error Message: Type 'Ricciolo.ViewStateAnalyzer.WebProfiler.VSAnalyzerHandler' cannot be instantiated under a partially trusted security policy (AllowPartiallyTrustedCallersAttribute is not present on the target assembly).
Source Error:
[No relevant source lines]
Source File: web.config Line: 136
Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.
Parser Error Message: Type 'Ricciolo.ViewStateAnalyzer.WebProfiler.VSAnalyzerHandler' cannot be instantiated under a partially trusted security policy (AllowPartiallyTrustedCallersAttribute is not present on the target assembly).
Source Error:
[No relevant source lines]
Source File: web.config Line: 136
难道是'Ricciolo.ViewStateAnalyzer.WebProfiler.VSAnalyzerHandler' 因为权限不够，无法加载？打开项目文件web.config，一看也没有WebProfiler啊，那它在何处？
忽然发现一行代码：<trust level="Medium"/>，哎，不管三七二十一，先把信任等级调高一个档次再说。将其调整至：High后，系统错误提示依旧，只是露出了狐狸尾巴：
代码
Line 134: <add path="*.xoml" verb="*" type="System.ServiceModel.Activation.HttpHandler, System.ServiceModel, Version=3.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"
Line 135: validate="false" />
Line 136: <add path="*.vsax" verb="*" type="Ricciolo.ViewStateAnalyzer.WebProfiler.VSAnalyzerHandler, Ricciolo.ViewStateAnalyzer.WebProfiler, Version=2.0.0.0, Culture=neutral, PublicKeyToken=0368bc80d1228e85" />
Line 137: <add path="trace.axd" verb="*" type="System.Web.Handlers.TraceHandler"
Line 138: validate="true" />
Line 135: validate="false" />
Line 136: <add path="*.vsax" verb="*" type="Ricciolo.ViewStateAnalyzer.WebProfiler.VSAnalyzerHandler, Ricciolo.ViewStateAnalyzer.WebProfiler, Version=2.0.0.0, Culture=neutral, PublicKeyToken=0368bc80d1228e85" />
Line 137: <add path="trace.axd" verb="*" type="System.Web.Handlers.TraceHandler"
Line 138: validate="true" />
而且系统错误文件指向系统web.config.
于是在经过查看系统程序集，确实发现有WebProfiler文件之后，最终将项目配置文件中的信任等级调至：Full。OK，问题解决。