String to boolean conversion

StringExtensions.cs

public static class StringExtensions {
    public static bool ToBoolean(this string str, bool bDefault = false) {
        var BooleanStringOff = new[] { "0", "off", "no" };
        if (string.IsNullOrEmpty(str)) return bDefault;
        else if (BooleanStringOff.Contains(str, StringComparer.InvariantCultureIgnoreCase)) return false;
		bool result;
		if (!bool.TryParse(str, out result)) result = true;
        return result;
	}
}