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In this example we will connect to an existing SQL Server Compact database. If no file is found, it looks for a "connection string" in the application's Web.config file.(A connection string contains information about how to connect to a database.These controls allow page developers to declaratively access and modify data without writing any code to perform the data access. We explored the essentials of declarative data binding earlier in this article series in the Data Source Control Basics and Accessing Database Data articles.This article is one in a series of articles on ASP. In addition to being used declaratively, the data source Web controls can also be accessed programmatically.Our article about Insert, Update, Delete Data into Database using Stored Procedure. Net validation controls, Cross-page posting and many more.
Clicking on Edit link on the list page (Index) brings us to Edit page for corresponding record.The complete source code for these demos - as well as a demo that looks at deleting data in much the same manner - is available as a download at the end of this article.In order to programmatically retrieve the results from a data source control we first need to add the data source control to the web page and specify its properties. This involved establishing a connection to the database, specifying the SQL command, and then executing the command. NET 2.0's data source controls greatly simplifies this process by encapsulating the data access pattern within a Web control construct.It is possible to add a Sql Data Source or Access Data Source control to a web page, specify queries, and then to programmatically execute one of the control's SQL commands.