Tài liệu Using Inheritance ppt

... Using Inheritance This section covers the essential inheritance- related syntax that you need to understand in order to create ... should note that you do not and cannot explicitly specify whether the inheritance is public, private, or protected. C# inheritance is always implicitly public. Java programmers should note ... up the inheritance hierarchy. So the following stateme...

Ngày tải lên: 24/12/2013, 09:16

... in a cursor using the @@CURSOR_ROWS function. You'll learn more about functions later in the " ;Using Functions " section. Step 5: Close the Cursor Close your cursor using the CLOSE ... reference to your cursor using the DEALLOCATE statement. This frees the system resources used by your cursor. The following example removes the reference to ProductCursor using the...

Ngày tải lên: 14/12/2013, 13:15

... < Day Day Up > Understanding Inheritance A class can gain (inherit) all members from another class. This is called inheritance. The class that's gaining the members ... solidify your understanding of inheritance, we're going to make a few enhancements to the Animal class so you can see how easy it is to update an object-oriented /inheritance- based project. ... Ch...

Ngày tải lên: 14/12/2013, 22:15

... is too easy to get them confused. NOTE Using identifiers that differ only by case can limit the ability to reuse classes in applications developed using other languages that are not case sensitive, ... Using Variables A variable is a storage location that holds a value. You can think of a variable

Ngày tải lên: 24/12/2013, 09:16

... Using Delegates In the following exercise, you will create a delegate to encapsulate a method that ... called ticking, to arrange for a pulse to be sent every second. This class catches the pulse by using an event (events will be described shortly), and then arranges for the display to be updated ... Clock.Start method so that it adds the Clock.RefreshTime method to the delega...

Ngày tải lên: 21/01/2014, 15:20

... [ Team LiB ] Using Templates A template is a custom form you save in your Windows file system, instead of publishing ... contact, or description information before you published the form, you can add the information using the Form Manager. The description displays on the Forms Manager dialog and in the description ... Forms menu. Type the name of the new MessageClass in the field an...

Ngày tải lên: 26/01/2014, 04:20

... hand, web programming using Ajax is not necessary for a site to be successful; sites such as Amazon and eBay, which are clearly doing well in the business arena, are either not using this form of ... Trainer for WestLake Using Ajax for Web Application Development: What Businesses Need To Know Copyright ©2007 Global Knowledge T raining LLC. All rights reserved. Page 2 Benefits of Using...

Ngày tải lên: 10/12/2013, 14:15

... functions. You get the total number of rows using the COUNT() function. For example, the following statement gets the total number of rows in the Products table using the COUNT() function: SELECT COUNT(*) ... 4.3 shows the results of this SELECT statement. Figure 4.3: Using the SUM() function to compute the total of the UnitPrice column Using Mathematical Functions The mathema...

Ngày tải lên: 14/12/2013, 13:15

... Figure 3.16: Using the DISTINCT keyword to retrieve distinct Country column values As you can see, the SELECT ... QuantityPerUnit, UnitPrice FROM Products WHERE ProductName LIKE 'Queso%'); Figure 3.22: Using an INSERT statement to add a new row to the Customers table Note You must supply values ... UPDATE statement, along with a SELECT statement that retrieves the mod...

Ngày tải lên: 14/12/2013, 13:15

... variables, and constants using System; using System.Data; using System.Data.SqlClient; // . . . public DataTable MyDataTable { get { // Fill a table using the DataAdapter control. ... Example 7-34. File: UsingDesignTimeFeauresWithComponentsForm.cs // Namespaces, variables, and constants using System; using System.Data; // . . . private void UsingDesignTimeFeau...

Ngày tải lên: 14/12/2013, 18:16