Why am getting red line under the Console.ReadLine() method in C# even when storing the user input in string type ?PS. red line removed using var?

Question

Console.WriteLine("Enter arguments");
string input = Console.ReadLine();// red line under Console.ReadLine
Console.WriteLine("Arguments at run-time  " + input);

/* I want to show the user input in string through my Console.WriteLine method and I know by-default it is in string type so why am getting red line under Console.ReadLine when using string and not when store in var type? Thanks! */

Are you sure it is a _red_ line? There is a _Warning_ in your Error List window. — H H, May 03 '22 at 18:38
Yeah thanks red line removed using string? or var But am not getting the reason behind the error.. This is the warning in my error-list window of Visual Studio: "CS8600- Converting null literal or possible null value to non-nullable type." — Shazma Batool, May 04 '22 at 07:25
That's still not an error, and that line isn't red. Read up about "nullable reference types". But as a beginner you may postpone that for a bit. — H H, May 04 '22 at 07:31

score 1 · Accepted Answer · edited May 04 '22 at 00:23

1

The Console.ReadLine(); function can return a null value and the IDE indicates that for safety. Use string?.

edited May 04 '22 at 00:23

Jeremy Caney

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answered May 03 '22 at 19:23

poseidon99

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Or disable nullable types in the project settings – JHBonarius May 03 '22 at 19:36

Why am getting red line under the Console.ReadLine() method in C# even when storing the user input in string type ?PS. red line removed using var?

1 Answers1