AJAX :: Login Page With Remember Me Without Using Login Control

I used below code for register user. I want use function for insert data into database. if user exist then it’ show message. Now I want show message from button click. 

CREATE PROCEDURE [dbo].[Validate_User]
@Username NVARCHAR(20),
@Password NVARCHAR(20)
AS
BEGIN
SET NOCOUNT ON;
DECLARE @UserId INT, @LastLoginDate DATETIME

[CODE]...