How To Retriece Single Record In Database By Using SqlDataSource???

Is me again,and now i facing problem to retrieve a single record from the database.

here is my code:

 

Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim user As String
        user = TextBox1.Text
        Dim varpassword
        Dim mydata As SqlDataSource

        mydata.SelectCommand = "Select * from tbluser where uLogin = '" & user & "'"
        varpassword = mydata.SelectCommand.uPassword

    End Sub
End Class

 

but i get the error : 'uPassword' is not a member of 'String'

i wan to retrieve the password of that user,can anyone help me?

thanks