Imports System.Data.SqlClient
Public Class Form1
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim connetionString As String
        Dim sqlCnn As SqlConnection
        Dim sqlCmd As SqlCommand
        Dim sql As String

        connetionString = "Data Source=ServerName;Initial Catalog=DatabaseName;User ID=UserName;Password=Password"
        sql = "Your SQL Statement Here ,  like Select * from product"

        sqlCnn = New SqlConnection(connetionString)
        Try
            sqlCnn.Open()
            sqlCmd = New SqlCommand(sql, sqlCnn)
            Dim sqlReader As SqlDataReader = sqlCmd.ExecuteReader()
            While sqlReader.Read()
                MsgBox(sqlReader.Item(0) & "  -  " & sqlReader.Item(1) & "  -  " & sqlReader.Item(2))
            End While
            sqlReader.Close()
            sqlCmd.Dispose()
            sqlCnn.Close()
        Catch ex As Exception
            MsgBox("Can not open connection ! ")
        End Try
    End Sub
End Class