Accessing Data in Datasets from XML

Question

I am using a dataset as a data source for a combo box. The example of the XML i am loading in the dataset is: John Smith Something Somewhere John2 Smith2 Something2 Somewhere2 In the combo box i want to load up the rentals to only one of the customers. Currently i can get all the rentals for all the customers by using: comboBox.DataSource = rentalData.Tables[1]; comboBox.DisplayMember = "Rental_Name"; I can also access the data of the Customers by using: comboBox.DataSource = rentalData.Tables[0]; comboBox.DisplayMember = "First_Name"; but i dont know how to access the rental table of the customer. How can i do this?