[NullReferenceException: 未将对象引用设置到对象的实例。]
BSQPW.dinggou.DingGouDetail.Page_Load(Object sender, EventArgs e) in D:\NPOI\BSQPW\BSQPWWeb\dinggou\DingGouDetail.aspx.cs:29
System.Web.UI.Control.OnLoad(EventArgs e) +107
System.Web.UI.Control.LoadRecursive() +89
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1532
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