Beginning C# 2005 Databases From Novice to Professional phần 6 ppsx
Beginning C# 2005 Databases From Novice to Professional phần 6 ppsx
... for customer WOLZA from Warszawa to Gdansk. Now click the Save Data button. The new row is now inserted into the Customers table in the database, and the city for WOLZA has been updated too. Close ... rerun the project to prove this. 9. Put Customers back the way it was by changing WOLZA’s city back to Warszawa and deleting customer zzz. Click Save Data to propagate the changes t...
Ngày tải lên: 09/08/2014, 14:20
Beginning C# 2005 Databases From Novice to Professional phần 3 ppsx
... SqlCommand(); Console.WriteLine("Command created."); CHAPTER 6 ■ INTRODUCING COMMANDS1 16 777Xch06final.qxd 11/18/ 06 3:24 PM Page 1 16 Listing 5-3. ConnectionOleDb.cs using System; using System.Data; using ... CHAPTER 5 ■ INTRODUCING CONNECTIONS 96 777Xch05final.qxd 11/18/ 06 3:34 PM Page 96 How It Works All you did was add a call to E xecuteScalar() within a call to W...
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Beginning C# 2005 Databases From Novice to Professional phần 7 ppsx
... typically used to pass values between stored procedures, but sometimes they need to be accessed from C#, so let’s write a stored procedure with an output parameter so we can use it in a C# program ... connection conn.Open(); CHAPTER 12 ■ USING STORED PROCEDURES3 26 777Xch12final.qxd 11/18/ 06 2:37 PM Page 3 26 Using Stored Procedures Stored procedures are programs run on the datab...
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Beginning C# 2005 Databases From Novice to Professional phần 9 ppsx
... infor mation to the handler : CHAPTER 15 ■ WORKING WITH ADO.NET EVENTS3 96 777Xch15final.qxd 11/18/ 06 2:34 PM Page 3 96 Listing 16- 3. Initialize Images Display in DisplayImages Constructor images ... didn’t add an Exit button, just close the window to exit. CHAPTER 16 ■ WORKING WITH TEXT AND BINARY DATA4 16 777Xch16final.qxd 11/18/ 06 2:33 PM Page 4 16 static void Main() { Retri...
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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 ... Hammer Pedersen, and Jon Reid Beginning C# 2005 Databases From Novice to Professional CYAN MAGENTA YELLOW BLACK PANTONE 123 CV ISBN 1-59059-777-X 9 781590 5977...
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Beginning C# 2005 Databases From Novice to Professional phần 2 pot
... Types SQL Data Type C# Type Description money decimal Values from -922,337,203 ,68 5,477.5808 through 922,337,203 ,68 5,477.5807 smallmoney decimal Values from -214,748. 364 8 through 214,748. 364 7 Character ... updating a row 777Xch03final.qxd 11/18/ 06 3:41 PM Page 58 CHAPTER 2 ■ GETTING TO KNOW OUR TOOLS 29 Figure 2-17. Restoring the Northwind database Figure 2-18. Restore-failur...
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Beginning C# 2005 Databases From Novice to Professional phần 4 potx
... 7 ■ INTRODUCING DATA READERS 161 777Xch07final.qxd 11/18/ 06 2: 46 PM Page 161 • How to manipulate data in a dataset • How to persist changes in the dataset back to the original data source • Working ... @" select companyname, contactname CHAPTER 7 ■ INTRODUCING DATA READERS 167 Figure 7 -6. Handling multiple result sets 777Xch07final.qxd 11/18/ 06 2: 46 PM Page 167 from c...
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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 ... PersistAdds.cs in Listing 8 -6 to use a command builder: 1. Add a new C# Console Application project named PersistAddsBuilder to your Chapter08 solution. Rename Program.cs to...
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Beginning C# 2005 Databases From Novice to Professional phần 8 doc
... an expedient way to cause an ADO.NET exception. You specify the command for a stored procedure call, but you don’t specify the stored procedure to call // Specify that a stored procedure is to be executed cmd.CommandType ... Exception"); } CHAPTER 13 ■ HANDLING EXCEPTIONS342 777Xch13final.qxd 11/18/ 06 2: 36 PM Page 342 begin transaction Add a customer insert into customers ( cu...
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Beginning C# 2005 Databases From Novice to Professional phần 10 potx
... 1 76 data context, 470 data integrity entity integrity, 265 – 266 overview, 265 referential integrity, 267 –273 using transactions, 359– 360 data provider connection classes, 95 data providers, 69 ADO.NET ... classes used in example, 160 working with data, 1 56 GetOrdinal method, DataReader classes used in example, 160 working with data, 1 56 GetSchemaTable method, 161 , 164 , 1 76...
Ngày tải lên: 09/08/2014, 14:20