Get only Whole Words from a .Contains() statement

Question

I\'ve used .Contains() to find if a sentence contains a specific word however I found something weird:

I wanted to find if the word "hi" was present in a se

Answer 1

Try using Regex:

if (Regex.Match(sentence, @"\bhi\b", RegexOptions.IgnoreCase).Success)
{
    //
};

This works just fine for me on your input text.