我在sharepoint 中 通过点击左边parent空间的连接 动态的在右边的placehold中加载用户控件。
正常情况下没问题。但是当用户点后退键之后再点链接时会报如下错误：
Failed to load viewstate. The control tree into which viewstate is being
loaded must match the control tree that was used to save viewstate during
the previous request. For example, when adding controls dynamically, the
controls added during a post-back must match the type and position of the
controls added during the initial request.回发的viewstate 与之前 request的不匹配。100分求解
正常情况下没问题。但是当用户点后退键之后再点链接时会报如下错误：
Failed to load viewstate. The control tree into which viewstate is being
loaded must match the control tree that was used to save viewstate during
the previous request. For example, when adding controls dynamically, the
controls added during a post-back must match the type and position of the
controls added during the initial request.回发的viewstate 与之前 request的不匹配。100分求解
如果需要,你可以参考http://www.cnblogs.com/xingd/archive/2005/03/02/111510.aspx
http://weblogs.asp.net/guys/archive/2004/12/05/275321.aspx里面有解决方法