前一段时间重装了系统（xp）系统所有的补丁包全部安装成功，最后安装了rainbow（以前的东西重新使用没有重新安装）但是一直报错！！！
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.
Compiler Error Message: CS0234: The type or namespace name 'ControlDesigner' does not exist in the namespace 'System.Web.UI.Design' (are you missing an assembly reference?)
Source Error:
Line 10: /// Designer support for paging
Line 11: /// </summary>
Line 12: public class PagingDesigner : System.Web.UI.Design.ControlDesigner
Line 13: {
Line 14: /// <summary>
Source File: d:\Portal\Rainbow\Rainbow15\app_code\Rainbow\UI\Design\PagingDesigner.cs Line: 12
真是把我的头搞大了！新装的系统主要就是为了开发rainbow 可是！！！！
找了3天的方案，其实最后原因就是framework的支持问题。xp打了补丁之后安装的是2.0的framework，可是rainbow支持1.0。改过来就ok了！