generic delegates and events 3. In the ComboBox, add the following arithmetic operators:Arithmetic Operators4. Create a class named CalculatorClass and declare a generic delegate named Formula above thename of the class. See sample code below.public delegate T Information(T arg1);5. Inside the class, declare the generic delegate's variable and set its data type to double. See samplecode below.public Information info;6. After declaring the variable for the generic delegate, create two (2) methods that retum the sum anddifference based on the following table:Method NameGetSumGetDifferenceDoubleDoubleData Type7. Add an event accessor named CalculateEvent with two (2) methods add and remove. Set a messagein the console just to confirm if the delegate is added or removed.Example: Console.WriteLine("Added the Delegate");8. In the frmCalculator class, declare the variable for the CalculatorClass named cal. After declaring.instantiate it inside the constructor of frmCalculator.9. Set the two (2) variables where the data types are double with a variable named num1 and num2.10. Double click the button to create the method for button event automatically.frmCalculatorEnter First Number: 35Enter Second Number: 10Answer: 3.5Calculate11. Get the value of txtBoxinput1 for num1 and txtBoxinput2 for num2.Note: You may encounter an error that says, "Cannot implicitly convert type string to double." If this happenuse Convert.ToDouble() to convert the value in the TextBox.Challenge Exercise:12. In CalculatorClass, add two (2) return type methods named Get Product for multiplication andGetQuotient for division.13. In the frmCalculator class, write a condition that validates the selected arithmetic operator in theComboBox. It should call the event and display the answer in a label.Example:cal. Calculate Event += new Formulac (cal. Get Sum);lblDisplay Total. Text = cal.GetSum(num1, num2).ToString();cal. Calculate Event -= new Formula (cal. Get Sum);14. Run the program to check the output. Calculator Using Generic Delegate and EventObjectives:At the end of the exercise, the students should be able to:▪ Declare, instantiate, and invoke delegates;•Use generic delegate data types in a program; and▪ Declare events and use event accessors.Software Requirement:• Visual Studio IDE 2015 or higherProcedures:Instructions:1. Create a simple calculator for a Windows application. Name the project as CalculatorApplication andthe form as FrmCalculator.2. Follow the design for the FrmCalculator using the screenshot below. Refer to the table for theproperties for each control.FrmCalculatorEnter First Number: 35Enter Second Number: 10Windows Forms ControlsTextBoxComboBoxTextBoxLabelAnswer: 3.5ButtonCalculateXPropertiesName: txtBoxinput1Font Size: 12Name: cbOperatorFont Name: ConsolasFont Size: 12Name: txtBoxinput2Font Size: 12Name: IblDisplay TotalName: btnEqualFont Name: ConsolasFont Size: 14

It is defined as an object which refers to a method or you can say it is a reference type variable…

ComboBox, and the following ithmetic operators Arithmetic Operators Create a class named CalculatorClass and declare a generic delegate named Formula above th name of the class. See sample code below. public delegate T Information(T argi); Inside the class, declare the generic delegate's variable and set its data type to double. See samp code below. public Information info; After declaring the variable for the generic delegate, create two (2) methods that retum the sum an difference based on the following table: Method Name GetSum Data Type Double

ComboBox, and the following ithmetic operators Arithmetic Operators Create a class named CalculatorClass and declare a generic delegate named Formula above th name of the class. See sample code below. public delegate T Information(T argi); Inside the class, declare the generic delegate's variable and set its data type to double. See samp code below. public Information info; After declaring the variable for the generic delegate, create two (2) methods that retum the sum an difference based on the following table: Method Name GetSum Data Type Double

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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