Mobile Number Methods (C#)

mobileNumber.cs

/// <summary>
/// IsValidMobileNumber
/// Checks if given string is a valid mobile number
/// </summary>
/// <param name="rawMobileNumber">Raw mobile number</param>
/// <returns>If is valid true, otherwise false</returns>
protected bool IsValidMobileNumber(string rawMobileNumber) {
	string mobileNumber = Regex.Replace(rawMobileNumber, @"\s+", "");

	mobileNumber = mobileNumber.Replace("+", "");

	if (mobileNumber.Substring(0, 2).Equals("61")) {
		mobileNumber.Replace("61", "0");
	}

	Regex mobileNumberRegex = new Regex(@"^\d{10}$");

	if (mobileNumberRegex.IsMatch(mobileNumber)) {
		return true;
	}

	return false;
}

/// <summary>
/// TidyMobileNumber
/// Removes uneccessary spaces and characters from raw mobile number
/// Prepares number for storing in database
/// </summary>
/// <param name="rawMobileNumber">Raw mobile number</param>
/// <returns>Tidy mobile number</returns>
protected string TidyMobileNumber(string rawMobileNumber) {
	string mobileNumber = Regex.Replace(rawMobileNumber, @"\s+", "");

	mobileNumber = mobileNumber.Replace("+", "");

	if (mobileNumber.Substring(0, 2).Equals("61")) {
		mobileNumber = mobileNumber.Replace("61", "0");
	}

	Regex mobileNumberRegex = new Regex(@"^\d{10}$");

	if (!mobileNumberRegex.IsMatch(mobileNumber)) {
		throw new ArgumentException("Input string is not a valid mobile number.");
	}

	return mobileNumber;
}

/// <summary>
/// FormatMobileNumber
/// Outputs a mobile number in a more readable format.
/// </summary>
/// <param name="rawMobileNumber">Raw mobile number</param>
/// <returns>Formatted mobile number</returns>
protected string FormatMobileNumber(string rawMobileNumber) {
	string mobileNumber = TidyMobileNumber(rawMobileNumber);

	mobileNumber = mobileNumber.Insert(4, " ");
	mobileNumber = mobileNumber.Insert(8, " ");

	return mobileNumber;
}

/// <summary>
/// ValidateMobileNumber
/// Validation method for custom validator control
/// example aspx code: <asp:customvalidator id="cvMobileNumberValidator" runat="server" controltovalidate="tfMobileNumber" onservervalidate="ValidateMobileNumber" display="Dynamic" errormessage="Mobile number is not valid." />
/// </summary>
/// <param name="sender">Control to validate</param>
/// <param name="eventArgs">Server validation event arguments</param>
protected void ValidateMobileNumber(object sender, ServerValidateEventArgs eventArgs) {
	eventArgs.IsValid = IsValidMobileNumber(eventArgs.Value);
}