This sample illustrates binding to a DataSet.

SampleData.xsd defines the schema for the data set, and
classes are automatically generated from this schema.

SampleData.xml is an embedded XML file with some sample
data.  When Form1 initializes, it loads this XML file
into the data set, which is bound to a combo box (used
to select the customer) and a data grid (showing sales
for the selected customer).

Select the "Switch" menu item to switch between the
data grid and the combo box.

Select the "Exit" menu item to exit the app.
