[NullReferenceException: 未将对象引用设置到对象的实例。]
WebApplication1.Products.ShowProduct.Page_Load(Object sender, EventArgs e) in C:\Users\GUOGUO\Desktop\驰安\WebApplication1\Products\ShowProduct.aspx.cs:73
System.Web.UI.Control.OnLoad(EventArgs e) +107
System.Web.UI.Control.LoadRecursive() +89
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1606
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