怎样可以快速入睡:可以在VB数据库连接字串中引入变量吗

各位高手，可以在VB数据库连接字串中引入变量吗？下列代码为什么不能打开数据库？
Private Sub Form_Load()
Dim Pass, SeverName, DataUser As String
Pass = "ABCDE"
DatsUser = "sa"
ServerName = "Networking"
Dim conn As New ADODB.Connection
Dim rs As New ADODB.Recordset
conn.ConnectionString = "Provider=SQLOLEDB.1;Password="&Pass&";Persist Security Info=True;User ID="&DataUser&";Initial Catalog=Northwind;Data Source="&ServgerName&""
conn.Open
conn.CursorLocation = adUseClient
rs.CursorLocation = adUseClient
rs.Open "Select * From employees", conn, adOpenDynamic, adLockOptimistic
我自己调试成了，可以引入变量，
Private Sub Form_Load()
Dim Pass, SeverName, DataUser As String

Pass = "314159"
DataUser = "sa"
ServerName = "Networking"

Text1.Text = Pass
Text2.Text = DataUser
Text3.Text = ServerName
Dim conn As New ADODB.Connection
Dim rs As New ADODB.Recordset
conn.ConnectionString = "Provider=SQLOLEDB.1;Password='" & Pass & "';Persist Security Info=True;User ID='" & DataUser & "';Initial Catalog=Northwind;Data Source='" & ServerName & "'"