Error - A Static readonly field cannot be assigned

Question

Hi

I am getting error - A Static readonly field cannot be assigned except in a static construcor or a variable initializer.

static async Task Main(string[] args)
        {
            _duration = TimeSpan.Zero;
            _random = new Random();
            await Start();
        }

Thanks

Amit Mohanty · Answer

You're trying to assign a value to a static readonly field (_duration or _random) outside of a variable initializer or a static constructor. This is not allowed because readonly fields can only be assigned a value either at the time of declaration or within a static constructor. So you can use a static constructor to assigned values (_duration or _random) dynamically at runtime or remove the readonly modifier from the fields. Static constructor: static readonly TimeSpan _duration; static readonly Random _random; static Program() { _duration = TimeSpan.Zero; _random = new Random(); } static async Task Main(string[] args) { await Start(); } Remove the readonly: static TimeSpan _duration; static Random _random; static async Task Main(string[] args) { _duration = TimeSpan.Zero; _random = new Random(); await Start(); }

Error - A Static readonly field cannot be assigned

Answers (1)