loging allows user to enter even with wrong password entered

As the tittle says, the program I'm developing allows the user to enter, even if there is no input in the text box at all. I have the users and passwords stored in a database and I ran a query for the login to use it in the code. So I do not know where I fuc*** up and where is the error. If you put the right user ans pass shows a message box granting access to the program and if you put them wrong grant access also showing the error message. Here some screens
https://s13.postimg.org/c62ffq8uv/Capture12.png
https://postimg.org/image/y5qm3gqe5/

 

You assign the query result to variable "login" but the query on the screenshot returns not a scalar value but a set of rows. Have you tried execute that query manually? Does it return anything at all?

Edit: May be you wanted to write query like:

Code:

select count(*) from
(
select Username, [Password] 
from users
group by Username, [Password]
having (Username = ?) and ([Password] = ?)
)

?

 

Thank you for your time but the error was on the code. I wrote the Me.Hide() and the Form2.Show() after the end if. Switched them and now works perfectly