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 24:           this.RadGrid1.DataBind();
Line 25: 
Line 26:             Machine machine = clsMachine.GetMachineByID(list[0].MachineID);
Line 27: 
Line 28:             this.LabelCategory.Text = machine.SubCategory.Category.Name ;

Source File: e:\hostingspaces\ecteg10\ect-eg.com\wwwroot\used-machines-details.aspx.cs    Line: 26

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) +67
   System.Collections.Generic.List`1.get_Item(Int32 index) +27
   used_machines_details.Page_Load(Object sender, EventArgs e) in e:\hostingspaces\ecteg10\ect-eg.com\wwwroot\used-machines-details.aspx.cs:26
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +85
   System.Web.UI.Control.OnLoad(EventArgs e) +79
   System.Web.UI.Control.LoadRecursive() +130
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2847


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4700.0