Beginning C# 2005 Databases From Novice to Professional phần 3 ppsx
Beginning C# 2005 Databases From Novice to Professional phần 3 ppsx
... CONNECTIONS 1 13 Figure 5-4. Displaying OLE DB connection information 777Xch05final.qxd 11/18/06 3: 34 PM Page 1 13 Introducing Commands Once you’ve established a connection to the database, you want to start ... Server to connect to Figure 4-12. Specify SQL Server authentication 777Xch04final.qxd 11/18/06 3: 39 PM Page 87 Introducing Connections Before you can do anything useful...
Ngày tải lên: 09/08/2014, 14:20
Beginning C# 2005 Databases From Novice to Professional phần 6 ppsx
... WOLZA’s city back to Warszawa and deleting customer zzz. Click Save Data to propagate the changes to the database. Once again, you didn’t write any code to access Customers, not even to perform navi- gation ... new row. To keep things very simple, just enter zzz for both the customer and company names. Change the city for customer WOLZA from Warszawa to Gdansk. Now click th...
Ngày tải lên: 09/08/2014, 14:20
Beginning C# 2005 Databases From Novice to Professional phần 7 ppsx
... USING STORED PROCEDURES 33 3 777Xch12final.qxd 11/18/06 2 :37 PM Page 33 3 Ho w It Works You use the MIN and MAX functions to find the minimum and maximum values, and you use the AVG function to calculate ... F igure 12-12. CHAPTER 12 ■ USING STORED PROCEDURES 32 7 777Xch12final.qxd 11/18/06 2 :37 PM Page 32 7 777Xch12final.qxd 11/18/06 2 :37 PM Page 33 4 Try It Out: Creating a St...
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Beginning C# 2005 Databases From Novice to Professional phần 9 ppsx
... 15-8 to class Form1. CHAPTER 15 ■ WORKING WITH ADO.NET EVENTS 39 3 777Xch15final.qxd 11/18/06 2 :34 PM Page 39 3 1. Insert the code in Listing 15-5 into the click event handler for the third button. Listing ... infor mation to the handler : CHAPTER 15 ■ WORKING WITH ADO.NET EVENTS396 777Xch15final.qxd 11/18/06 2 :34 PM Page 39 6 Listing 16 -3. Initialize Images Display in DisplayImages...
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Beginning C# 2005 Databases From Novice to Professional phần 1 docx
... page count BOOKS FOR PROFESSIONALS BY PROFESSIONALS ® Beginning C# 2005 Databases: From Novice to Professional Dear Reader, Thousands of C# programmers have become database professionals through the ... Pedersen, and Jon Reid Beginning C# 2005 Databases From Novice to Professional CYAN MAGENTA YELLOW BLACK PANTONE 1 23 CV ISBN 1-59059-777-X 9 781590 597774 5...
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Beginning C# 2005 Databases From Novice to Professional phần 2 pot
... map to a single C# type, decimal (see Table 3- 8). Table 3- 8. T-SQL Money Data Types SQL Data Type C# Type Description money decimal Values from -922 ,33 7,2 03, 685,477.5808 through 922 ,33 7,2 03, 685,477.5807 smallmoney ... database . CHAPTER 2 ■ GETTING TO KNOW OUR TOOLS 33 Figure 2-24. Database Explorer with no connections 777Xch02final.qxd 11/18/06 3: 43 PM Page 33 T...
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Beginning C# 2005 Databases From Novice to Professional phần 4 potx
... a bucket, ready to be filled with water, but it needs an external pipe to let the water in. In other words, the dataset needs a data adapter to populate it with data and to sup- port access to the data ... 1 53 Summary In this chapter, you used data readers to perform a variety of common tasks, from sim- ply looping through single result sets to handling multiple result sets....
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Beginning C# 2005 Databases From Novice to Professional phần 5 doc
... optimal way. ■T ip In general, tr y to exploit SQL, ra ther than code C# procedures, to get the data you need from the database. Database servers are optimized to perform selections and sorts, as ... utility to create a class for a typed dataset, it’s a lot of work, is subject to error, and is something you’ll rarely (if ever) want or need to do. There’s little advantage to...
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Beginning C# 2005 Databases From Novice to Professional phần 8 doc
... Exception"); } CHAPTER 13 ■ HANDLING EXCEPTIONS342 777Xch13final.qxd 11/18/06 2 :36 PM Page 34 2 begin transaction Add a customer insert into customers ( customerid, companyname ) values(@newcustid, ... the code to see which catch clause handles the exception.) CHAPTER 13 ■ HANDLING EXCEPTIONS344 Figure 13- 6. Handling a SQL Server exception 777Xch13final.qxd 11/18/06 2 :36 PM Pag...
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Beginning C# 2005 Databases From Novice to Professional phần 10 potx
... data, 435 – 437 overview, 434 – 435 RAW mode, 438 – 439 foreach statement, 471, 4 73 foreign keys, 264–265. See also constraints FROM clause, 446, 471 FROM keyword, 44 FULL OUTER joins, SQL, 31 1 ■G GetBoolean ... primary keys constructors, creating commands with, 116–117 content, 433 ControlBindingsCollection, 238 controlinfo empty element, 433 controls, synchronizing with data...
Ngày tải lên: 09/08/2014, 14:20