Beginning C# 2008 Databases From Novice to Professional phần 6 ppt

... rdr[1]); } Console.WriteLine("".PadLeft (60 , '=')); } while (rdr.NextResult()); CHAPTER 12 ■ USING DATA READERS 261 9004ch12final.qxd 12/13/07 4:07 PM Page 261 from customers where companyname like ... @" select productname, unitprice, unitsinstock, discontinued from products "; The reason we have you choose these columns is to deal with different kinds o...

Ngày tải lên: 08/08/2014, 18:21

... which is set to False by default. 6. Drag a Label control from the Toolbox to below the TextBox and set its AutoSize property to False. Also, set the Label’s Font Size property to 12 and TextAlign property ... named DisplayImages to your solution. Rename Form1.cs to DisplayImages.cs. 2. Add a text box, a button, and a picture box to the form and set the button’s Text propert...

Ngày tải lên: 08/08/2014, 18:21

... 0. 968 2" 512 page count Books for professionals By professionals ® Beginning C# 2008 Databases: From Novice to Professional Dear Reader, This book focuses on accessing databases using C# 2008 ... Programming Languages /C# User level: Beginner–Intermediate Agarwal, Huddleston C# 2008 Databases The eXperT’s Voice ® in .neT Beginning C# 2008 Databases...

Ngày tải lên: 08/08/2014, 18:21

... Figure 4-7. select CustomerID, TerritoryID , Row_Number() over (Partition by TerritoryID order by CustomerID) as [RowCount] from Sales.Customer Where TerritoryID in (1,2) AND CustomerID Between 1 ... beginning, middle, or end. In this case, book titles such as C# 2008: An Introduction,” “Accelerated C# 2008, ” and Beginning C# 2008 Databases will be listed. • _ (underscore): A s...

Ngày tải lên: 08/08/2014, 18:21

... be as shown in Figure 6- 7. Figure 6- 7. Displaying the definition of a stored procedure CHAPTER 6 ■ USING STORED PROCEDURES1 06 9004ch06final.qxd 12/13/07 4: 16 PM Page 1 06 In this example, you ... sp_Select_All_Employees as select employeeid, firstname, lastname from employees Figure 6- 1. Creating a stored procedure using SQL Server Management Studio Express CHAPTER 6 ■ USING...

Ngày tải lên: 08/08/2014, 18:21

... System.Data.SqlClient; 6. Next you want to add a click event for the button. Double-click button1, and it will open the code editor with the button1_click event. Insert the code in Listing 8-2 into the code editor. Listing ... T-SQL H ere, you’ll code a transaction to both add a customer to and delete one from the N orthwind Customers table. The Customers table has eleven columns;...

Ngày tải lên: 08/08/2014, 18:21

... something you almost never want (or need) to do. You need to be able to store whatever values are appropriate at any given time. There are two approaches to doing this. Both are reasonable, but ... connection string, so you were connected to the SQL Server’s default database master. If you wanted to connect to the Northwind data- base, you’d need to specify the Database param...

Ngày tải lên: 08/08/2014, 18:21

... ascending order by name from “a” to “z.” You can switch to the Alphabetical view by clicking the icon located at the second posi- tion from the left of the toolbar shown in the top of the Properties ... rendered in a 16- by- 16- pixel square. Working with Windows Forms In order to work with Windows Forms, you need to create a Windows Forms Application project using Visual Studio...

Ngày tải lên: 08/08/2014, 18:21

... Label control to the top border of the form. Set this control’s TextAlign property to Top, Center. 7. Set the Dock property for the Label control from None to Top, which means you want the label to always ... property to Database Exception-3. Add a label to the right of this button, and change its Text property to Creates multiple SqlError objects. The layout should look like...

Ngày tải lên: 08/08/2014, 18:21

... 342 ■J JOIN operator, 67 , 70 join specification, 61 joins, 38, 61 –71 inner, 61 67 writing, 62 writing of three tables, 65 writing using correlation names, 64 natural joins, 61 outer, 67 –71 adding ... 56 58 AVG functions, 56 COUNT function, 57 MAX functions, 56 MIN functions, 56 SUM functions, 56 CTEs, 42–44 DATETIME functions, 59 60 GROUP BY clause, 44–45 joins, 61 –71...

Ngày tải lên: 08/08/2014, 18:21