Mention what is DataAdapter class in ADO.NET? In ADO.NET data-adapter class fetch data from the database, stores data in a dataset and reflects the changes made in the dataset to the database. For all type of communication, data-adapter act as an intermediary. Using the Fill() method, data-adapter fills data to a Data-table.
The HTTP protocol on which all web applications work is stateless protocol. By stateless, it just means that information is not retained from one request to another.
For instance, if you had a login page which has 2 textboxes, one for the name and the other for the password. When you click the Login button on that page, the application needs to ensure that the username and password get passed onto the next page.
