/// <summary>
/// Check username and password when user login to system
/// </summary>
/// <param name="loginModel">Username and password of user who want to login to system</param>
/// <returns>return 0 if username and password are valid, return 1 if password is invalid, return -1 if all are invalid</returns>
public int CheckLogin(string userName, string password)
{
LogManagementSystemEntities dbContext = new LogManagementSystemEntities();
var isExistUser = dbContext.Users.FirstOrDefault(x => x.UserName == userName && x.Password == password);
if (isExistUser != null)
{
return(0);
}
else
{
return(-1);
}
}
