Check if the string contains all inputs on the list

Question

I want to be able to check if the string contains all the values held in the list; So it will only give you a \'correct answer\' if you have all the \'key words\' from the l

Answer 1

You can use some of the LINQ methods like:

if(Keywords.All(k => textBox1.Text.Contains(k))) {
   correct += 1;
   MessageBox.Show("Correct");
} else {
   incorrect -= 1;
   MessageBox.Show("Incorrect");
}

The All method returns true when the function returns true for all of the items in the list.

Answer 2

Using LINQ:

// case insensitive check to eliminate user input case differences
var invariantText = textBox1.Text.ToUpperInvariant();
bool matches = KeyWords.All(kw => invariantText.Contains(kw.ToUpperInvariant()));

Answer 3

This should help:

 string text = "Psychology is the study of mental process and behaviour of humans";
 bool containsAllKeyWords = KeyWords.All(text.Contains);