(solution) Redesign the lab assignment by using WPF and MVVM

(solution) Redesign the lab assignment by using WPF and MVVM

Redesign the lab assignment by using WPF and MVVM pattern.

Redesign the lab assignment by using WPF and MVVM pattern.
Requirements:
1. Store the data file in an XML file, then read the data from the file.
2. Create a combo box with options to select ascending or descendinng.
3. Create three buttons to sort options 1, 2 and 3.
4. Create a DataGrid control to display social security number, last name, first name, and
pay amount.
5. Create a button to reload the original data into the DataGrid control.