Warning: NULL literal or a possible NULL value is being converted to a non-nullable type.

Ladies and gentlemen,

I am confronted with a new type of warning, that I would like to understand.

What should I do?

This is the code:

    [HttpGet("/{userSlug}")]
    public async Task<User> ShowUser(string userSlug)
    {
        User user = await _dataContext.Users.FirstOrDefaultAsync((u) => u.Slug == userSlug);

        return user;
    }

    [HttpGet("/{userSlug}")]
    public async Task<User> ShowUser(string userSlug)
    {
        User user = await _dataContext.Users.FirstOrDefaultAsync((u) => u.Slug == userSlug);

        return user;
    }

This is the message:

NULL literal or a possible NULL value is being converted to a non-nullable type

C#•2y ago•

7 replies

Timo Martinson

Warning: NULL literal or a possible NULL value is being converted to a non-nullable type.

Ladies and gentlemen,

I am confronted with a new type of warning, that I would like to understand.

What should I do?

This is the code:

    [HttpGet("/{userSlug}")]
    public async Task<User> ShowUser(string userSlug)
    {
        User user = await _dataContext.Users.FirstOrDefaultAsync((u) => u.Slug == userSlug);

        return user;
    }

    [HttpGet("/{userSlug}")]
    public async Task<User> ShowUser(string userSlug)
    {
        User user = await _dataContext.Users.FirstOrDefaultAsync((u) => u.Slug == userSlug);

        return user;
    }

This is the message:

NULL literal or a possible NULL value is being converted to a non-nullable type

Warning: NULL literal or a possible NULL value is being converted to a non-nullable type.

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