RadioButton Control AutoPostBack Property

The AutoPostBack property of ASP.Net RadioButton control allows it to automatically post back the web page to the server when user clicks on the radiobutton control to change its checked state. The AutoPostBack property is also a Boolean type property that accepts the value as true or false. The "true" value specified for the AutoPostBack property allows the automatic post back event whereas "false" value disables this feature.

 

Using AutoPostBack feature of RadioButton control you can get the value for checked state of RadioButton control at the page load. In the sample below we have also used the Page Load method of the ASP.Net web page to retrieve and display the checked state of the radiobutton controls shown in the sample. When you will click the radiobutton to change its checked or unchecked state it will send the web page to post back automatically and will update the output accordingly.

 

Try the sample below to understand the functionality of AutoPostBack Property of ASP.Net RadioButton control.

Output:

Content and Other Controls associated to first RadioButton Control
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