System.Data.SqlClient.SqlException:Login failed for user

Question

Hi Team

 

I am experience an error closed day and half now and cant seem to find any resolution to this issue. Who can help me to fix this error? "System.Data.SqlClient.SqlException:Login failed for user. Here is my logic below. 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web;
using Microsoft.Web.WebPages.OAuth;
using WebMatrix.WebData;
namespace eNtsaPortalWebsiteProject
{
public class AuthConfig
{
public static void RegisterAuth()
{
WebSecurity.InitializeDatabaseConnection("MyString", "Users", "UserName", "FullName", autoCreateTables: true);
}
}
}