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In the example, the interface System.Runtime.Serialization.ISerializable is implemented. This means when BinaryFormatter serializes or deserializes, MyObject BinaryFormatter will not manipulate the binary stream, but delegate the manipulation to MyObject. With many serialization platforms, there is an explicit method, property, or flag to indicate whether MyObject is being written to the stream or read from the stream. In the case of binary serialization, when an object is written to the stream, the GetObjectData() method is called, and when the object is being read from the stream, the constructor MyObject() is called. Serialization involves two directions, and a developer must implement both, in the same way. In the example, the AddValue() method is called, indicating that the data member is written as a string, and when reading, the value data member must be read as a string.

speed. For this reason, when the GridView s extra features are not used, you should stick with the DataList. ASP.NET also provides an even simpler and faster object, named Repeater. We don t use the Repeater object in this book, but you should take a look at its documentation for more information.

Note One of the biggest challenges with serialization is that each and every serialization platform seems

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Goal Seek is a simple, easy-to-use, timesaving tool that enables you to calculate a formula s input value when you want to work backwards from the formula s answer. You use Goal Seek when you want to find a specific value for a single worksheet cell by adjusting the value of one other worksheet cell. When you know the desired result of a single formula but not the input value the formula needs to determine the result, Goal Seek is a good tool to use.

The GridView is more powerful than the DataList and has many more features; in this chapter, you ll only use part of the GridView s possibilities, particularly the ones that allow for easy integration of edit, select, and delete buttons, and database-bound column editing in Design View. You can see the mentioned controls in Figure 11-13, where the select button is called Edit Categories. Everything you do here with the GridView is also possible with the DataList, but using the GridView eases your work considerably because of its rich set of built-in features. You don t have to worry about the performance penalty for using a more complex control, because the administration page won t be accessed frequently, compared to the main web site.

to have its own way of doing things. Sometimes there will be common methods and attributes, but other times they will not exist. A universal approach to serialization won t work. You should avoid performing custom serialization whenever possible. Most serialization platforms are smart enough to know what to do with each data member. So the best approach is to let the platform figure things out.

1. Start by creating the four stored procedures that perform the basic tasks for departments: retrieving departments, updating departments, deleting departments, and inserting departments. The procedure for retrieving departments already exists in the database, so you just need to add the other three: CatalogAddDepartment, CatalogUpdateDepartment, and CatalogDeleteDepartment. USE BalloonShop GO CREATE PROCEDURE CatalogAddDepartment (@DepartmentName nvarchar(50), @DepartmentDescription nvarchar(1000)) AS INSERT INTO Department (Name, Description) VALUES (@DepartmentName, @DepartmentDescription) GO CREATE PROCEDURE CatalogUpdateDepartment (@DepartmentID int, @DepartmentName nvarchar(50), @DepartmentDescription nvarchar(1000)) AS UPDATE Department SET Name = @DepartmentName, Description = @DepartmentDescription WHERE DepartmentID = @DepartmentID

In the example of the Ticket type, all of the data members were serialized. However, sometimes that is not desired. Suppose an object that you want to serialize has a network connection. When the object is serialized, the network connection will also be serialized, which is not appropriate. It is not appropriate to serialize a network connection because that object is transient and applies only to the context of the object instance. To mark an object as nonserializable, attributes are often used, as in the following example. [Serializable] class MyObject2 { [NonSerialized] private int _networkIdentifier; } In the example, _networkIdentifier will not be written or read from the data stream.

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