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Solved, C# Common Language Runtime Detected An Invalid Program.

December 01, 2022

C# Common Language Runtime Detected An Invalid Program.


This is the oddest programming problem I've encountered in a long time.


After updating to version 15.8.0 of Visual Studio 2017 I am getting an exception when running my ASP.NET Webforms application.

The solution build without issue, but the error occurs as soon as run the application in the browser.

The following is a portion of the code (it is all simple stuff):


C# code
Code

I can still build and build the dll without any problems, but when I use the created dll, I receive the following error:

Exception and stack trace:
System.InvalidProgramException: Common Language Runtime detected an invalid program.
at ASP.errorpage_aspx..ctor()
at __ASP.FastObjectFactory_app_web_pugar0lj.Create_ASP_errorpage_aspx()
at System.Web.Compilation.BuildResultCompiledType.CreateInstance()
at System.Web.Compilation.BuildManager.CreateInstanceFromVirtualPath(VirtualPath virtualPath, Type requiredBaseType, HttpContext context, Boolean allowCrossApp)
at System.Web.UI.PageHandlerFactory.GetHandlerHelper(HttpContext context, String requestType, VirtualPath virtualPath, String physicalPath)
at System.Web.UI.PageHandlerFactory.GetHandler(HttpContext context, String requestType, String virtualPath, String path)
at System.Web.HttpApplication.MaterializeHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step)
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)


Solution:

  • Rename C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\Team Tools\Performance Tools\vsinstr.exe to C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\Team Tools\Performance Tools\vsinstr.exe.broken
  • Rename C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\Team Tools\Performance Tools\vsinstr.legacy.exe to C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\Team Tools\Performance Tools\vsinstr.exe
  • Rebuild the solution.

This worked for me hope this will work for you also.




Most Asked C# Interview Programs

October 28, 2022
In C# interviews, it is a common practice to ask for the coding questions. Today we will see the top 10 most Asked interview coding questions of C#.

C# Icon
C# Icon



 1. Print the String when input 2A3B4C then output AABBBCCCC? 

Ans:- 
 using System; 
 public class Test
  {
   public static void Main() 
     { 
        String s = "2A3B4C"; 
        String ans = ""; 
        for(int i = 0; i < s.Length;)
        {  
          int num = 0; 
         while(s[i] >= '0' && s[i] <= '9')
         { 
           num = num * 10 + (s[i] - '0');
            i++; 
          }
          while(num-- > 0)
           { 
            ans += s[i];
             } 
               i++; 
           } 
           Console.WriteLine(ans);
       }
 }

2. Check Whether the Entered Number is an Armstrong Number or Not.

Ans:- An Armstrong number of three digits is an integer such that the sum of the cubes of its digits is equal to the number itself.

/*
 * C# Program to Check Whether the Entered Number is an Armstrong Number or Not
 */ 
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
 
namespace ConsoleApplication6
{
    class Program
    {
        static void Main(string[] args)
        {
            int number, remainder, sum = 0;
            Console.Write("enter the Number");
            number = int.Parse(Console.ReadLine());
            for (int i = number; i > 0; i = i / 10)
            {
                remainder = i % 10;
                sum = sum + remainder*remainder*remainder;
 
            }
            if (sum == number)
            {
                Console.Write("Entered Number is an Armstrong Number");
            }
            else
                Console.Write("Entered Number is not an Armstrong Number");
            Console.ReadLine();
        }
     }
  }
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