Question

I’m trying to work out if something does not exist in the table. I’m telling it to see if the UserInfo contains information for user.

UserInfo Character = db.UserInfoes.SingleOrDefault(a => a.Username == user);
if (Character.Username == null || Character.Username.Length == 0)
{
    //do stuff
}

But I get an error on the if statement.

Object reference not set to an instance of an object.

Answer 1

You need to add a test on Character to know if it’s null. If that’s the case, you’ll have the exception you mentionned.

So just do this :

if(Character != null)
{
    //Your code can now safely call the Properties/Methods/etcetc...
}