Question

For some reason i cannot get this if statement to work

if (htmlCode.Contains("Sign out") && !htmlCode.Contains("bye bye")) 
{
    // do stuff...
}

is there any way to get contains and does not contain to work in same if statement?

Answer 1

First of all check the htmlCode, the text could be mixed with some html tags or something like that, also the issue can be with cases, when trying to find some string in the text you should always remember about cases.

You can use .Contains method or .IndexOf, actually the contains method in the Framework is implemented like this:

public bool Contains(string value)
{
  return this.IndexOf(value, StringComparison.Ordinal) >= 0;
}

For comparing large strings without knowing the case I would use:

htmlCode.IndexOf("Sign out", StringComparison.InvariantCultureIgnoreCase);
htmlCode.IndexOf("Bye bye", StringComparison.InvariantCultureIgnoreCase);

If you know that response will be small, you can use .ToLower() or .ToUpper()