Unable to open the saved application

I have developed c# application which is not having any database.I have saved the application with data in rich textboxes in my custom file format.When i click on the saved application,I can open my application but,i was unable to open with the data saved in it.
How to load the saved data in my application.
I was unable to load data when application starts.




When i click on the save button my application is saved in my file format(.edp),it is saved on my desktop.When i double click on saved file icon my application is opening in my file format with my UI design,but not he data in it.I was unable to load data when application starts.