之前，客户向我们投诉在其站点老遇到这个问题：
为萨迦等地区用户提供了全套网页设计制作服务，及萨迦网站建设行业解决方案。主营业务为成都网站设计、成都网站建设、外贸网站建设、萨迦网站设计，以传统方式定制建设网站，并提供域名空间备案等一条龙服务，秉承以专业、用心的态度为用户提供真诚的服务。我们深信只要达到每一位用户的要求，就会得到认可，从而选择与我们长期合作。这样，我们也可以走得更远！
这是我第一次遇到这个奇怪的错误提示信息，幸好客户提供了错误日志。
2012-08-02 10:47:15,860 [22] ERROR Logger - Operation is not valid due to the current state of the object.
SOURCE: System.Web
TARGETSITE: Void ThrowIfMaxHttpCollectionKeysExceeded()
STACKTRACE: at System.Web.HttpValueCollection.ThrowIfMaxHttpCollectionKeysExceeded()
at System.Web.HttpValueCollection.Add(HttpCookieCollection c)
at System.Web.HttpRequest.FillInParamsCollection()
at System.Web.HttpRequest.GetParams()
at System.Web.HttpRequest.get_Params()
at Accela.ACA.Web.Component.AppSpecInfoTableEdit.GetValueFromHttp(Boolean isAdding, Int32 controlloop, String suffix, String prefix, Int32 groupIndex)
at Accela.ACA.Web.Component.AppSpecInfoTableEdit.GetControlValue(Int32 groupIndex, String prefix, Int32 itemIndex, Int32 rowIndex, String suffix, Boolean isGetRealRowIndex)
at Accela.ACA.Web.Component.AppSpecInfoTableEdit.ShowAppSpecInfoGroup(AppSpecificTableModel4WS appInfoTable, Int32 groupIndex, PlaceHolder phCurrentAppInfoTable, String prefix)
at Accela.ACA.Web.Component.AppSpecInfoTableEdit.Repeater_ItemDataBound(Object sender, DataListItemEventArgs e)
at System.Web.UI.WebControls.DataList.OnItemDataBound(DataListItemEventArgs e)
at System.Web.UI.WebControls.DataList.CreateItem(Int32 itemIndex, ListItemType itemType, Boolean dataBind, Object dataItem)
at System.Web.UI.WebControls.DataList.CreateControlHierarchy(Boolean useDataSource)
at System.Web.UI.WebControls.BaseDataList.OnDataBinding(EventArgs e)
at System.Web.UI.WebControls.BaseDataList.DataBind()
at Accela.ACA.Web.Component.AppSpecInfoTableEdit.Display()
at Accela.ACA.Web.Cap.CapEdit.InitAppSpecTable(String value, CapModel4WS capModel)
at Accela.ACA.Web.Cap.CapEdit.LoadPage(PageModel customPage, CapModel4WS capModel)
at Accela.ACA.Web.Cap.CapEdit.BindPageflowGroup(CapModel4WS capModel4WS, PageFlowGroupModel pageflowGroup)
at Accela.ACA.Web.Cap.CapEdit.OnInit(EventArgs e)
at System.Web.UI.Control.InitRecursive(Control namingContainer)
at System.Web.UI.Page.Proce***equestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
从这段日志去分析，好像是ASP.NET Runtime有意抛出来，也就是说我们应该是违反了.NET Framework的某些规则才导致成这样。后来我就在网上搜索，找到了根本原因：这是由于NET Framework V4.0在2011年12月29号发布的一个更新引起的，具体的详细情况和解决思路，请参考下面这篇文章：
ASP.NET MS11-100: how can I change the limit on the maximum number of posted form values?
http://stackoverflow.com/questions/8684049/asp-net-ms11-100-how-can-i-change-the-limit-on-the-maximum-number-of-posted-for
解决思路：
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