CODEWITHSUNDEEP
c#visual-studio
KarstenG
KarstenG

Reputation: 11

Blank Command window upon running C# in Visual Studio using CTRL + F5

This is a problem in two parts - one before and one after reinstalling Visual Studio 2019.

To set the scene, I am trying to lean programming C# following a course on Udemy, in other words I am a complete beginner.

Part One:

Regardless of what program I attempt to run, using CTRL + F5, from Visual Studio (Microsoft Visual Studio Community 2019 - Version 16.5.5) - I just get at black Console window with no text the first three to four times I press CTRL + F5, then it works on the next try. Once it works it continues to work every time, even if I makes changes to the program.

Press CTRL + F5 -> Black Console, I close console;

Press CTRL + F5 -> Black Console, I close console;

Press CTRL + F5 -> Black Console, I close console;

Press CTRL + F5 -> Black Console, I close console;

Press CTRL + F5 -> works.

After that it works every time.

Write a new program, and I have to go through this again.

What is causing this?

Part Two:

To this someone suggested uninstalling VS, and reinstalling it.

  1. All new projects now are a "Hello World" program and include this line of code Console.WriteLine("Hello World!"); they didn't before

  2. Here is an example of a program that took a few tries to get to run (See part one):

    using System;

namespace Exercise4 { class Program { static void Main(string[] args) { const int demeritPrKm = 5; Console.WriteLine("Enter speed limit:"); var speedLimit = Convert.ToInt32(Console.ReadLine());

        {
            int demeritPoints;
            int speedExceedance;

            Console.WriteLine("Enter actual speed:");
            var actualSpeed = Convert.ToInt32(Console.ReadLine());


            if (actualSpeed <= speedLimit && actualSpeed>0)

            {
                Console.WriteLine("Speed within limits");

            }
            else
            {
                demeritPoints = ((actualSpeed - speedLimit) / demeritPrKm);
                speedExceedance = (actualSpeed - speedLimit);
                Console.WriteLine("Speed limit exceeded by " + speedExceedance + "km/h, Demerit points: " + demeritPoints);

                if (demeritPoints > 12)
                {
                    Console.WriteLine("***** LICENSE SUSPENDED *****");

                }
                else
                {
                    Console.WriteLine("** License OK **");

                }

            }

        }

    }
}

}

Upvotes: 1

Views: 496

Answers (1)

ERAGON
ERAGON

Reputation: 319

You Don't have the Console.Readkey() In your codes

try inserting it in the last line of your codes and try building and running again.

Upvotes: 0

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