[ArgumentOutOfRangeException: 长度不能小于 0。
参数名: length]
System.String.InternalSubStringWithChecks(Int32 startIndex, Int32 length, Boolean fAlwaysCopy) +7500775
System.String.Substring(Int32 startIndex, Int32 length) +11
ebooking.ticketing.train_order.BinderCity_Value() in E:\HRC_ASPNET\www_booking_guangzhouhotel_com\ticketing\train_order.aspx.cs:134
ebooking.ticketing.train_order.Page_Load(Object sender, EventArgs e) in E:\HRC_ASPNET\www_booking_guangzhouhotel_com\ticketing\train_order.aspx.cs:42
System.Web.UI.Control.OnLoad(EventArgs e) +99
System.Web.UI.Control.LoadRecursive() +50
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +627
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