select all checkboxes in dropdownchecbox in pageload?

Question

in page load i want to select all checkboxes in dropdowncheckboxes using asp.net with c#. please anybody help me.

Rajeesh Menoth · Answer

Hi CheckBoxList is in form: Google Yahoo Bing Msn Method in `.cs` file: private void ChekAllCheckBox() { foreach (ListItem li in chkChoice.Items) { li.Selected = true; } } Pageload like this. protected void Page_Load(object sender EventArgs e) { if (!IsPostBack) { ChekAllCheckBox(); } } Reference : http://stackoverflow.com/questions/23746797/how-to-check-all-checkboxes-in-a-checkboxlist-when-page-first-loads https://khanalshree.wordpress.com/2012/01/06/check-all-checkbox-in-checkboxlist-when-page-is-load-in-asp-net-c/ The answer is helpful.Then please accept it ..!!