I will develop desktop application using c sharp

I will develop a windows app using Visual Studio (C#) according to your requirements. Most people want a simple app that can automate certain tasks, like renaming files or deleting folders, sending emails, etc.

Others want an app which deals with data entry, and can store and manipulate data in a small bundled database (like sqlite or access database).

I can also build an app that can generate reports in your desired format, and with data visualization. Maybe you need an app that does all of the above; collect data, store in a database, generate a report then send an email on a daily basis.

All of that and more can be done.