[ArgumentException: An item with the same key has already been added.]
System.ThrowHelper.ThrowArgumentException(ExceptionResource resource) +56
System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add) +13143720
System.Collections.Generic.Dictionary`2.Add(TKey key, TValue value) +16
Agora.Inscription.scfq2019.GetReservedStand(Int32 FormItemId) +650
Agora.Inscription.scfq2019.Page_Init(Object sender, EventArgs e) +55
System.Web.UI.Control.OnInit(EventArgs e) +79
System.Web.UI.Page.OnInit(EventArgs e) +12
System.Web.UI.Control.InitRecursive(Control namingContainer) +390
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1624
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