Krish data controls

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m.g.krishnakumar

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Krish data controls

  1. 1. Array HashTable DataReader DataSet Extensible Markup Language is a markup language that defines a set of rules for encoding documents in aformat that is both human – readable and machine-readable. It is defined inthe XML 1.0 Specification produced by the W3C. (World Wide Web Consortium)
  2. 2. The ADO.NET DataReader to retrieve a read-only, forward-only stream of data from a database. Results arereturned as the query executes, and are stored in the network bufferon the client until you request them using the Read method of theDataReader. Datasets store a copy of data from the databasetables. However, Datasets can not directly retrieve data fromDatabases. DataAdapters are used to link Databases with DataSets. If we see diagrammatically. Databases  Data Providers  DataAdapters  DataSets
  3. 3. DataAdapter is a part of the ADO.NET DataProvider. DataAdapter provides the communication between theDataset and the Datasource. We can use the DataAdapter incombination with the DataSet Object. That is these two objectscombine to enable both data access and data manipulationcapabilities. A Data View enables you to create differentviews of the data stored in a Data Table, a capability that is oftenused in data-binding applications. Using a DataView, you can exposethe data in a table with different sort orders, and you can filter thedata by row state or based on a filter expression.
  4. 4. DataSet DatabaseAuthors Connection Authors DataAdapter Select … from Authors
  5. 5. DataSet Database Authors Connection Publishers DataAdapterPublishers Select … from Publishers
  6. 6. DataSet Authors DataGrid RepeaterPublishers DataList Data View
  7. 7.  Displays data as a table Control over  Alternate item  Header  Footer  Colors, font, borders, etc.  Paging Updateable Item as row
  8. 8. List formatNo default outputMore controlMore complexityItem as rowNot updateable
  9. 9. Directional renderingGood for columnsItem as cellAlternate itemUpdateable

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