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When Update is called, the Data Adapter will attempt to execute each query (UPDATE, INSERT, DELETE) on every row of the Data Set that has been updated, inserted, and deleted.
For example, if you call Delete on a row on the Data Set, then when Update is called on the Data Adapter, the Delete Command of the Data Adapter will be called using the particular row in the Data Set.
In Lesson 3, we discussed a fully connected mode of operation for interacting with a data source by using the Sql Command object.
In Lesson 4, we learned about how to read data quickly an let go of the connection with the Sql Data Reader.
The Sql Data Adapter opens a connection only when required and closes it as soon as it has performed its task.
” or “How do I read a database into _______ control and then update the database?When I click “yes” it will bring up a data-design surface, and (if in a web project) automatically launch the “Create Table Adapter” wizard (if you are in a class library project you need to right click and choose “Add-The “Create Table Adapter” wizard will first prompt me for the database to use, and provide a list of all database connections currently registered in Visual Web Developer’s server-explorer window (note: you can also create new connections from this wizard if you want).The above dialog shows the default settings that are set when you run the “Create Table Adapter” wizard from within a VS 2005 Web Site Project (these are the most common data patterns we typically see developer’s use with stateless web applications).I really like the fact that it enables me to avoid having to write tedious data access code, while still preserving full control over my SQL data logic (I also like the fact that it enables me to use both standard SQL statements as well as SPROCs).What I’ve tried to-do with the below set of tutorials is provide an end-to-end, step-by-step, walkthrough that covers all of the core concepts involved in creating and consuming a DAL built with the data designer. NET 2.0 together, you should be able to create a core DAL implementation and build from scratch a data-driven UI web app on top of an existing database very quickly (~10-15 minutes to build an application from scratch that supports master/details filtering along with data paging, sorting, insertion, and editing).