Server Error in '/' Application.

Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index

Source Error: 


Line 48:                 else
Line 49:                 {
Line 50:                     sb.AppendFormat(@"涓婁竴绡囷細{1}", list[currentindex - 1].BsId.ToString(), list[currentindex - 1].Title);
Line 51:                 }
Line 52:

Source File: c:\webhosting\data\newsdel.aspx.cs    Line: 50

Stack Trace: 


[ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index]
   System.ThrowHelper.ThrowArgumentOutOfRangeException(ExceptionArgument argument, ExceptionResource resource) +69
   System.Collections.Generic.List`1.get_Item(Int32 index) +12737729
   newsdel.bank() in c:\webhosting\data\newsdel.aspx.cs:50
   newsdel.Page_Load(Object sender, EventArgs e) in c:\webhosting\data\newsdel.aspx.cs:15
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +52
   System.Web.UI.Control.OnLoad(EventArgs e) +97
   System.Web.UI.Control.LoadRecursive() +61
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +693

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4330.0
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