Ado.net
- 1. Visual Programming PRESENTED BY: M QAMAR UL MUSTAFA
- 2. ADO.NET ADO.NET is an object-oriented set of libraries that allows you to interact with data sources. Commonly, the data source is a database, but it could also be a text file, an Excel spreadsheet, or an XML file.
- 3. Connection: The Connection Object is a part of ADO.NET Data Provider. The Connection Object is Handling the part of physical communication between the C# application and the Data Source. The Connection Object connect to the specified Data Source and open a connection between the C# application and the Data Source, depends on the parameter specified in the Connection String .
- 4. Command: The Command Object in ADO.NET executes SQL statements and Stored Procedures against the data source specified in the C# Connection Object. The Command Object requires an instance of a C# Connection Object for executing the SQL statements .
- 5. Data Adapter: DataAdapter is a part of the ADO.NET Data Provider. DataAdapter provides the communication between the Dataset and the Datasource. We can use the DataAdapter in combination with the DataSet Object. by mapping Fill method, which changes the data in the DataSet to match the data in the data source, and Update, which changes the data in the data source to match the data in the DataSet.
- 6. Data Reader: DataReader Object in ADO.NET is a stream-based , forward-only, read-only retrieval of query results from the Data Sources , which do not update the data. The DataReader cannot be created directly from code, they can created only by calling the ExecuteReadermethod of a Command Object.
- 7. The ADO.NET Object Model