Here is a sample Stack Trace that I may get from a typical error in my ASP.NET Web application.  Notice the number +521 at the end of the second line.  How do I interpret this into a real line number within my code?

[SocketException (0x2afc): The requested name is valid, but no data of the requested type was found]
   StoreFront.payment.PleaseWaitButton1_Click(Object sender, EventArgs e) +521
   System.Web.UI.WebControls.Button.OnClick(EventArgs e) +108
   System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +57
   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +18
   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +33
   System.Web.UI.Page.ProcessRequestMain() +1292

If the pdb is the same one that was built with the app, they should be the same.
  Here is a sample Stack Trace that I may get from a typical error in my ASP.NET Web application.  Notice the number +521 at the end of the second line.  How do I interpret this into a real line number within my code?

  [SocketException (0x2afc): The requested name is valid, but no data of the requested type was found]
     StoreFront.payment.PleaseWaitButton1_Click(Object sender, EventArgs e) +521
     System.Web.UI.WebControls.Button.OnClick(EventArgs e) +108
     System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +57
     System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +18
     System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +33
     System.Web.UI.Page.ProcessRequestMain() +1292

There is no PDB, this is a release version of my DLL.
  If the pdb is the same one that was built with the app, they should be the same.
    Here is a sample Stack Trace that I may get from a typical error in my ASP.NET Web application.  Notice the number +521 at the end of the second line.  How do I interpret this into a real line number within my code?

    [SocketException (0x2afc): The requested name is valid, but no data of the requested type was found]
       StoreFront.payment.PleaseWaitButton1_Click(Object sender, EventArgs e) +521
       System.Web.UI.WebControls.Button.OnClick(EventArgs e) +108
       System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +57
       System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +18
       System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +33
       System.Web.UI.Page.ProcessRequestMain() +1292

You can't get the line number if the DLL is not compiled in debug mode.
  There is no PDB, this is a release version of my DLL.
    If the pdb is the same one that was built with the app, they should be the same.
      Here is a sample Stack Trace that I may get from a typical error in my ASP.NET Web application.  Notice the number +521 at the end of the second line.  How do I interpret this into a real line number within my code?

      [SocketException (0x2afc): The requested name is valid, but no data of the requested type was found]
         StoreFront.payment.PleaseWaitButton1_Click(Object sender, EventArgs e) +521
         System.Web.UI.WebControls.Button.OnClick(EventArgs e) +108
         System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +57
         System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +18
         System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +33
         System.Web.UI.Page.ProcessRequestMain() +1292

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