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Using con As New SqlClient.SqlConnection(connectionString)
Dim customer = con.CallSingleProc.CustomerSelect(AccountKey:=12345)
Console.WriteLine(customer.FirstName & " " & customer.LastName)

Dim orders As IList = con.CallListProc.OrderSearch(AccountKey:=12345, MinCreatedDate:=Now.AddDays(-7), MaxCreatedDate:=Now)
Dim totalValue = Aggregate order In orders Into Sum(CDec(order.TotalOrderValue))
Console.WriteLine("This customer ordered a total of $" & totalValue & " last week")
For Each order In orders
Console.WriteLine(vbTab & "Order Key: " & order.OrderKey & " Value: $" & order.TotalOrderValue)
Next

End Using
  
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{
var customer = con.CallSingleProc().CustomerSelect(AccountKey: 12345);
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