How do I solve this problem

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Windows

Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately. 

 Parser Error Message: Could not load type 'pdfdemo.Global'.

Source Error: 



Line 1:  <%@ Application Codebehind="Global.asax.cs" Inherits="pdfdemo.Global" Language="C#" %>

  

 Source File:  /global.asax    Line:  1 


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4110.0 

What I have tried:

I first delete global.asax file then upload in project newly but not getting the way to set proper code in global.asax file