System.Web.Security.SqlMembershipProvider.CreateUser C# (CSharp) Method

		public override MembershipUser CreateUser (string username,
							   string password,
							   string email,
							   string pwdQuestion,
							   string pwdAnswer,
							   bool isApproved,
							   object providerUserKey,
							   out MembershipCreateStatus status)
		{
			if (username != null) username = username.Trim ();
			if (password != null) password = password.Trim ();
			if (email != null) email = email.Trim ();
			if (pwdQuestion != null) pwdQuestion = pwdQuestion.Trim ();
			if (pwdAnswer != null) pwdAnswer = pwdAnswer.Trim ();

			/* some initial validation */
			if (username == null || username.Length == 0 || username.Length > 256 || username.IndexOf (',') != -1) {
				status = MembershipCreateStatus.InvalidUserName;
				return null;
			}
			if (password == null || password.Length == 0 || password.Length > 128) {
				status = MembershipCreateStatus.InvalidPassword;
				return null;
			}

			if (!CheckPassword (password)) {
				status = MembershipCreateStatus.InvalidPassword;
				return null;
			}
			EmitValidatingPassword (username, password, true);

			if (RequiresUniqueEmail && (email == null || email.Length == 0)) {
				status = MembershipCreateStatus.InvalidEmail;
				return null;
			}
			if (RequiresQuestionAndAnswer &&
				(pwdQuestion == null ||
				 pwdQuestion.Length == 0 || pwdQuestion.Length > 256)) {
				status = MembershipCreateStatus.InvalidQuestion;
				return null;
			}
			if (RequiresQuestionAndAnswer &&
				(pwdAnswer == null ||
				 pwdAnswer.Length == 0 || pwdAnswer.Length > 128)) {
				status = MembershipCreateStatus.InvalidAnswer;
				return null;
			}
			if (providerUserKey != null && !(providerUserKey is Guid)) {
				status = MembershipCreateStatus.InvalidProviderUserKey;
				return null;
			}

			if (providerUserKey == null)
				providerUserKey = Guid.NewGuid();

			/* encode our password/answer using the
			 * "passwordFormat" configuration option */
			string passwordSalt = "";

			RandomNumberGenerator rng = RandomNumberGenerator.Create ();
			byte [] salt = new byte [SALT_BYTES];
			rng.GetBytes (salt);
			passwordSalt = Convert.ToBase64String (salt);

			password = EncodePassword (password, PasswordFormat, passwordSalt);
			if (RequiresQuestionAndAnswer)
				pwdAnswer = EncodePassword (pwdAnswer, PasswordFormat, passwordSalt);

			/* make sure the hashed/encrypted password and
			 * answer are still under 128 characters. */
			if (password.Length > 128) {
				status = MembershipCreateStatus.InvalidPassword;
				return null;
			}

			if (RequiresQuestionAndAnswer) {
				if (pwdAnswer.Length > 128) {
					status = MembershipCreateStatus.InvalidAnswer;
					return null;
				}
			}
			status = MembershipCreateStatus.Success;

			using (DbConnection connection = CreateConnection ()) {

				try {
					DbCommand command = factory.CreateCommand ();
					command.Connection = connection;
					command.CommandText = @"aspnet_Membership_CreateUser";
					command.CommandType = CommandType.StoredProcedure;

					DateTime Now = DateTime.UtcNow;

					AddParameter (command, "@ApplicationName", ApplicationName);
					AddParameter (command, "@UserName", username);
					AddParameter (command, "@Password", password);
					AddParameter (command, "@PasswordSalt", passwordSalt);
					AddParameter (command, "@Email", email);
					AddParameter (command, "@PasswordQuestion", pwdQuestion);
					AddParameter (command, "@PasswordAnswer", pwdAnswer);
					AddParameter (command, "@IsApproved", isApproved);
					AddParameter (command, "@CurrentTimeUtc", Now);
					AddParameter (command, "@CreateDate", Now);
					AddParameter (command, "@UniqueEmail", RequiresUniqueEmail);
					AddParameter (command, "@PasswordFormat", (int) PasswordFormat);
					AddParameter (command, "@UserId", ParameterDirection.InputOutput, providerUserKey);
					DbParameter returnValue = AddParameter (command, "@ReturnVal", ParameterDirection.ReturnValue, DbType.Int32, null);

					command.ExecuteNonQuery ();

					int st = GetReturnValue (returnValue);

					if (st == 0)
						return GetUser (username, false);
					else if (st == 6)
						status = MembershipCreateStatus.DuplicateUserName;
					else if (st == 7)
						status = MembershipCreateStatus.DuplicateEmail;
					else if (st == 10)
						status = MembershipCreateStatus.DuplicateProviderUserKey;
					else
						status = MembershipCreateStatus.ProviderError;

					return null;
				}
				catch (Exception) {
					status = MembershipCreateStatus.ProviderError;
					return null;
				}
			}
		}