true if value matches the beginning of this string; otherwise, false.
Type Reason ArgumentNullException value is a null reference.
This method compares value to the substring at the beginning of this instance that is the same length as value, and returns an indication whether they are equal. To be equal, value must be an empty string (string.Empty), must be a reference to this same instance, or must match the beginning of this instance.
This method performs a word (case-sensitive and culture-sensitive) comparison using the current culture.