Xml to Save TextBox, ComboBox, DatagridView input

I have written a program with approx 20 text boxes, 5 ComboBoxes, and 7 DatagridView boxes. I have been told to save the user input for reopening the file later, I should use Xml. I have never written in Xml, but have spent a week studing it. This file will be the "Save As" file. Most of the boxes will be empty. I assume I will make an array of the TextBox, ComboBox, and DataGridView names and loop thru them. Do you know where I could find examples? I will also have to read the Xml to put the data back into the correct boxes when the user reopens the file.

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Dan Cederlund