Public Function CreateCustomerAdapter( _
  ByVal connection As SqlConnection) As SqlDataAdapter

    Dim adapter As SqlDataAdapter = New SqlDataAdapter()

    ‘ Create the SelectCommand.
    Dim command As SqlCommand = New SqlCommand( _
        “SELECT * FROM Customers ” & _
        “WHERE Country = @Country AND City = @City”, connection)

    ‘ Add the parameters for the SelectCommand.
    command.Parameters.Add(“@Country”, SqlDbType.NVarChar, 15)
    command.Parameters.Add(“@City”, SqlDbType.NVarChar, 15)

    adapter.SelectCommand = command

    ‘ Create the InsertCommand.
    command = New SqlCommand( _
        “INSERT INTO Customers (CustomerID, CompanyName) ” & _
        “VALUES (@CustomerID, @CompanyName)”, connection)

    ‘ Add the parameters for the InsertCommand.
    command.Parameters.Add(“@CustomerID”, SqlDbType.NChar, 5, “CustomerID”)
    command.Parameters.Add(“@CompanyName”, SqlDbType.NVarChar, 40, “CompanyName”)

    adapter.InsertCommand = command

    ‘ Create the UpdateCommand.
    command = New SqlCommand( _
        “UPDATE Customers SET CustomerID = @CustomerID, CompanyName = @CompanyName ” & _
        “WHERE CustomerID = @oldCustomerID”, connection)

    ‘ Add the parameters for the UpdateCommand.
    command.Parameters.Add(“@CustomerID”, SqlDbType.NChar, 5, “CustomerID”)
    command.Parameters.Add(“@CompanyName”, SqlDbType.NVarChar, 40, “CompanyName”)
    Dim parameter As SqlParameter = command.Parameters.Add( _
        “@oldCustomerID”, SqlDbType.NChar, 5, “CustomerID”)
    parameter.SourceVersion = DataRowVersion.Original

    adapter.UpdateCommand = command

    ‘ Create the DeleteCommand.
    command = New SqlCommand( _
        “DELETE FROM Customers WHERE CustomerID = @CustomerID”, connection)

    ‘ Add the parameters for the DeleteCommand.
    command.Parameters.Add( _
        “@CustomerID”, SqlDbType.NChar, 5, “CustomerID”)
    parameter.SourceVersion = DataRowVersion.Original

    adapter.DeleteCommand = command

    Return adapter
End Function

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