What is the use of IsPostBack in C#?
What is the use of IsPostBack in C#? IsPostBack is used to check if the page is responding to a post back event, like clicking a button. So, lets say you have some textboxes for users to change some data and then click a button to submit the data. Is post back in C#? PostBack is done if certain credentials of the page are to be checked against some sources (such as verification of username and password using database). This is something that a client machine is not able to accomplish and thus these details have to be 'posted back'...