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

		public override bool ChangePassword (string username, string oldPwd, string newPwd)
		{
			if (username != null) username = username.Trim ();
			if (oldPwd != null) oldPwd = oldPwd.Trim ();
			if (newPwd != null) newPwd = newPwd.Trim ();

			CheckParam ("username", username, 256);
			CheckParam ("oldPwd", oldPwd, 128);
			CheckParam ("newPwd", newPwd, 128);

			if (!CheckPassword (newPwd))
				throw new ArgumentException (string.Format (
						"New Password invalid. New Password length minimum: {0}. Non-alphanumeric characters required: {1}.",
						MinRequiredPasswordLength,
						MinRequiredNonAlphanumericCharacters));

			using (DbConnection connection = CreateConnection ()) {
				PasswordInfo pi = ValidateUsingPassword (username, oldPwd);

				if (pi != null) {
					EmitValidatingPassword (username, newPwd, false);
					string db_password = EncodePassword (newPwd, pi.PasswordFormat, pi.PasswordSalt);

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

					AddParameter (command, "@ApplicationName", ApplicationName);
					AddParameter (command, "@UserName", username);
					AddParameter (command, "@NewPassword", db_password);
					AddParameter (command, "@PasswordFormat", (int) pi.PasswordFormat);
					AddParameter (command, "@PasswordSalt", pi.PasswordSalt);
					AddParameter (command, "@CurrentTimeUtc", DateTime.UtcNow);
					DbParameter returnValue = AddParameter (command, "@ReturnVal", ParameterDirection.ReturnValue, DbType.Int32, null);

					command.ExecuteNonQuery ();

					if (GetReturnValue (returnValue) != 0)
						return false;

					return true;
				}
				return false;
			}
		}