C#•2y ago

❔ string with error onverting null literal or possible null value to non-nullable type.

i think the string isnt workijng and wen i use var it works but the only thing that isnt working is the varaible on the readline isnt functionng right

namespace Brack2
{
    class Program
    {
    
        static void Main(string [] args)
        {
            Console.WriteLine("Whats ur name");

            string playerName = Console.ReadLine();

            Console.WriteLine("Hi " + playerName);
       
            Console.ReadKey();
        }
    }
}

namespace Brack2
{
    class Program
    {
    
        static void Main(string [] args)
        {
            Console.WriteLine("Whats ur name");

            string playerName = Console.ReadLine();

            Console.WriteLine("Hi " + playerName);
       
            Console.ReadKey();
        }
    }
}

7 Replies

Angius•2y ago

Console.ReadLine() returns a string? not a string It's due to an edge case when certain inputs can result in it not returning a string, not even an empty one, but rather returning nothing A common workaround is Console.ReadLine() ?? "" It provides a fallback, in case the readline returns null, it falls back to "", an empty string, so it always remains a string

jack•2y ago

thank u so much but does this issue happen with like int bool and float values and if it does would i use the same fix

Angius•2y ago

Depends on what any given method returns It's not something related to strings, or bools, or ints It's something related to nullable types A method can return int or it can return int? It can return string? like this one, or it can return string

jack•2y ago

ok this is all good 2 know thx

Angius•2y ago

In case of nullable types, yeah, you can always use a fallback nullableInt ?? 0, nullableBool ?? false, nullableChar ?? '\0' etc

jack•2y ago

ok thx

Accord•2y ago

Was this issue resolved? If so, run /close - otherwise I will mark this as stale and this post will be archived until there is new activity.

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Programming

❔ string with error onverting null literal or possible null value to non-nullable type.