استفسار (the connectionstring has not been intitialized)

السلام عليكم 

ممكن اخي ارسال كود الربط مع الداتا بيز ؟ 

هذا هو الكود اخي

Imports System.Data.SqlClient
Public Class FrmLogIn

    Private Sub FrmLogIn_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        Try
            Import.sqlcon.ConnectionString = "Data Source =AHMED;Initial Catalog=Test;Integrated Security=true"
            'MsgBox("تم الاتصال بنجاح", MsgBoxStyle.Exclamation)

        Catch ex As Exception
            MsgBox(ex.Message)

        End Try
    End Sub