XML files to treeview how to bind so that i will get the desired result

i have xml file

1 Positive Feedback 2 Positive Feedback - Inflight 1 Flight Attendants 1 1 Positive Feedback 5 Positive Feedback - Other 1 Other 1 3 Flight Operations 1 Flight Paperwork 1 Flight Paperwork details 2 3 Flight Operations 4 Flight Crew Manuals 8 Vol. 2 1 开发者_StackOverflow中文版 3 Flight Operations 15 Chief Pilot Office / Chief Pilot Support Center 1 Chief Pilot Office 1 3 Flight Operations 15 Chief Pilot Office / Chief Pilot Support Center 2 Chief Pilot Support Center 1 4 Inflight Services 1 Catering 1 Passenger Catering 1 4 Inflight Services 2 Other Inflight Item 1 Other Inflight Item details 2 7 Security 3 Passenger Security 4 Other Passenger Security Issues 2

i have to bind into tree view so that result sould be like

toipc--'Category1--'Subcategory11 ' 'subcategory12 ' 'category2--'Subcategory21 'Subcategory22

how can i do it

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