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The Sql Data Adapter opens a connection only when required and closes it as soon as it has performed its task.For example, the Sql Data Adapter performs the following tasks when filling a Data Set with data: In between the Fill and Update operations, data source connections are closed and you are free to read and write data with the Data Set as you need.

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I will start with a sample Windows Forms application using Data Set.These are the mechanics of working with disconnected data.Because the applications holds on to connections only when necessary, the application becomes more scalable.I create a data table in the database called My Customer with three columns: Cust Id, Name and Company.To change an existing row's data, you can directly assign a row's value.

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