Open popup and refresh parent page on close popup, in ASP.NET with help of javascript

To open pop-up

//ButtonControl is id of button on whose click pop-up needs to be opened. Place below lines on pageLoad, rowDataBound or some other place as needed.

string popupPagePath = "http://www.ravigupta.in";
ButtonControl.Attributes.Add("onclick", "window.open('" + popupPagePath + "','','width=400, height=600'); return false;");

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To close child window(pop-up) and then refresh the parent window.

Javascript code for closing child and refreshing parent

window.close();
if (window.opener && !window.opener.closed) {
window.opener.location.reload();
}

For using in ASP.NET, write below on event handler of control that initiates close of popup.

ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "CloseWindow", "window.close(); if (window.opener && !window.opener.closed) { window.opener.location.reload(); }", true);

This worked for me. Hope it helps you too.