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If you want to create one instance of a class that has the same field and property values as another instance of the same class, then you need to implement a copy constructor. There are two approaches to creating copy constructors, the first of which is shown in Listing 9-51. Listing 9-51. Creating and Using a Copy Constructor using System; class Person { public string Name { get; set; } public int Age { get; set; } public string City { get; set; } public Person(string name, int age = 38, string city = "London") { Name = name; Age = age; City = city; } public Person(Person originalPerson) { Name = originalPerson.Name; Age = originalPerson.Age; City = originalPerson.City;

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The get() method works on the request side. Are there any saved cookies to add to the request headers for the appropriate domain The put() method is called when you get a response back from the server, letting you look at the response headers to see if there are any cookies. If any are present, you need to cache them off for the next get() call.

Figure 6-3

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} } class Listing 51 { static void Main(string[] args) { // create a new instance of Person Person orig = new Person("Joe Smith", 50, "New York"); // create an instance of Person // using the copy constructor Person copy = new Person(orig); // print out the details of the copied Person Console.WriteLine("--- Person ---"); Console.WriteLine("Name: {0}", copy.Name); Console.WriteLine("Age: {0}", copy.Age); Console.WriteLine("City: {0}", copy.City); // wait for input before exiting Console.WriteLine("Press enter to finish"); Console.ReadLine(); } } The Person class in the example contains a copy constructor, marked in bold. Copy constructors have a single parameter that is of the same type as the enclosing class. In this case, the parameter is an instance of Person. The copy constructor sets the value of each property to be the value in the parameter instance of Person. The Main method in the example creates an instance of Person and then creates a second instance using the copy constructor. Compiling and running the code in Listing 9-51 produces the following output: --- Person --Name: Joe Smith Age: 50 City: New York Press enter to finish The second approach is to have the copy constructor call another constructor. Here is an example: class Person { public string Name { get; set; } public int Age { get; set; } public string City { get; set; } public Person(string name, int age = 38, string city = "London") { Name = name; Age = age; City = city; }

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24 Nov 2018 ... Introduction. This blog will demonstrate how to generate QR code using ASP . NET . Step 1. Create an empty web project in the Visual Studio ...

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