Refresh a parent page from a child iframe, with codebehind

Using Codebehind

1. In the codebehind of the child iframe, add the following code

   protected void RefreshParent(object sender, EventArgs e)
   {
     // Get the parent page.
     Page parentPage = (Page)Page.Parent;
   
     // Refresh the parent page.
     parentPage.ClientScript.RegisterStartupScript(typeof(Page), "RefreshParent", "location.reload();", false);
   }

2. In the child iframe, add a button that will call the RefreshParent() method when clicked. For example

   Refresh Parent Page

You can refresh with JavaScript.

Add below JavaScript into Parent Page

function refreshParent() {
  location.reload();
}

In child iFrame, call the JavaScript.

parent.refreshParent();

You can also use the postMessage() method to communicate between the parent page and the child iframe. To do this, you would first send a message from the child iframe to the parent page indicating that you want to refresh the page. The parent page would then receive the message and call the refreshParent() function.