Dear all,

Please help on below question in C# Visual Studio.

Note : Chapters on methods, arrays and functions not yet covered

Please use same namings for all buttons present on the form

Many thanks in advance !

The application below is used to compute the total and average of a set of marks. It consists of a listbox, IstMarks that initially contains a set of marks. When the user enters a number, n, in the textbox, txtNum and clicks calculate button, btnCalculate, the first n numbers are displayed in the second listbox, IstNum. Their total and average are also calculated and displayed in the texboxes txtTotal and txtAverage respectively. Student Marks Marks Number: 4 txtNum Ist Marks Calculate btn Calculate IstNum INN88SN txtTotal Total: Average: 199 49.75 txtAverage Write the code for btnCalculate