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1. What do you mean by windows application? Explain all the important controls (at least 10 controls) with 5 important properties. 2. What do you mean by Ado.net? explain different component of Ado.net with example program 3. What do you mean by object-oriented programming in C# ? write and explain four important features of object-oriented programming in C\# with program. 4. Write C\# code to update data in the database table. The fields are Student_Id, Student_Name, Major, and PhoneNumber