error in vb.net

[nandhanvijay]

hi friends

am new to .net. am using vb.net 05 and sql server 2000. am getting error in my program. plz help to correct and learn

 (vb.net)
Imports System.Data.SqlClient
Imports System.Data.Sql


Public Class Form1

    Dim myDataSet As DataSet
    Dim myConnection1 As New SqlClient.SqlConnection()
myConnection1.ConnectionString = "Data Source=vijay;" & _
"Initial Catalog=NorthwindSQL;"
    Dim mySelectCommand1 As New SqlClient.SqlCommand()
mySelectCommand1.CommandText = "SELECT Address, City, Region, PostalCode FROM Customers"
mySelectCommand1.Connection = myConnection1
    Dim myDataAdapter1 As New SqlClient.SqlDataAdapter()
myDataAdapter1.SelectCommand = mySelectCommand1
myDataSet = New DataSet("MyNewDataSet")
myDataAdapter1.Fill(myDataSet)
End Class

my errors are
myconnection1 has not declared
mydataadapter1 has not declared
mydataset has not declared
but i have declared every thing why its say like that
help me
thanks in advance
Regards
vijay

[radcaesar]

You may miss some assembly references like

System.Data
System