Finds a specified keyword inside of a text file

FindStringInFile.cs

        /// <summary>
        /// Returns true or false depending on if a text file contains the specified word in the content
        /// Example:
        /// FindWordInFile("error", "C:/user/Desktop/test.txt");
        /// </summary>
        /// <param name="word">Word to find in text file</param>
        /// <param name="filePath">Absolute path to the text file</param>
        /// <returns>True if the word is inside of the file, false if not.</returns>
        static public bool FindWordInFile(string word, string filePath)
        {
            bool contains = false;

            // Read each line of the file into a string array
            string[] lines = System.IO.File.ReadAllLines(filePath);

            foreach (string line in lines)
            {
                // Check if word is in the read line
                contains = line.IndexOf(word, StringComparison.OrdinalIgnoreCase) >= 0;
                
                if (contains)
                    return contains;
            }

            // No matches found
            return contains;
        }