Please help me understand AutoPostBack property of an ASP.NET control

Question

I\'m learning about ASP.NET, mainly by following through a book, but also making an effort to actually do things along the way. But, I came across an explanation about list cont

Answer 1

If you set AutoPostBack="true" on a control, when it's value changes, it will automatically postback to the server.

For example if you wanted a dropdown that when changed displayed different data in a table below or something, you might want to postback get the new value so your page could refresh the data.

This is opposed to style of the dropdown and a button beside it you click to postback, so instead of change value, click the button, you can just change the value with AutoPostBack="true".