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发表于 2025-3-28 15:53:50
Introducing Commands,Once you’ve established a connection to the database, you want to start interacting with it and getting it to do something useful for you. You may need to add, update, or delete some data, or perhaps modify the database in some other way. Whatever the task, it will inevitably involve a ..
Motilin
发表于 2025-3-28 20:37:14
Introducing Data Readers,In Chapter 4 you used data readers to retrieve data from a multirow result set. In this chapter, we’ll look at data readers in more detail. You’ll see how they’re used and their importance in ADO.NET programming.
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发表于 2025-3-29 00:23:45
Introducing Datasets and Data Adapters,In Chapter 7 you saw how to use data readers to access database data in a connected, forward-only, read-only fashion. Often, this is all you want to do, and a data reader suits your purposes perfectly.
陈旧
发表于 2025-3-29 03:35:27
Introducing Data Binding,Windows Forms controls can be . to database data. Once bound, you can display and update data with minimal coding. In this chapter we’ll cover:
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发表于 2025-3-29 10:13:52
Using Stored Procedures,Stored procedures are programs run on the database server that allow you to package SQL in an optimal fashion for reuse. Writing stored procedures is a major study in itself. Our goal here is to introduce you to the rudiments of stored procedures so you understand how Visual Basic programs need to interact with them. In this chapter, we cover:
Entreaty
发表于 2025-3-29 13:59:33
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发表于 2025-3-29 16:45:49
Working with ADO.NET Events,ADO.NET objects (such as connections and datasets) can fire events when a property has changed. For example, you can make a connection that notifies you when it opens or closes. Similarly, you can create a dataset that notifies you when a column value is changed or when a row is deleted.
屈尊
发表于 2025-3-29 22:11:07
Working with Text and Binary Data,Some kinds of data have special formats, are very large, or vary greatly in size. In this chapter, you’ll learn techniques for working with text and binary data, including the following:
现任者
发表于 2025-3-30 00:20:30
Introducing LINQ,ADO.NET 2.0 is a mature (but still growing) data access API that has considerably more power than we’ve covered in this introductory book. It’s reasonably straightforward to use and lets us simulate the same kinds of data structures and relationships that exist in relational databases.
Hamper
发表于 2025-3-30 06:34:38
Soldat-Sein heute: Eine Einleitung, an instance of a class that implements the System.Data.IDbConnection interface for a specific data provider. In this chapter, you’ll use various data providers to establish connections and look at problems that might arise and how to solve them.