VS 2010 Using If Statement in Login System

Hello to everyone ,

If textbox.text = "Pass" Then
bla bla
End If

this is the simple login system all we know.im trying to develop advance one. i found functions which encrypt the text.
i saved the encrypted text , but at the end of the coding im using the If statement,like

if encryptFunction(textbox1.text) = encryptedPass Then
bla bla
End If

Is this the healty way ? i mean using if statement.