How to specify javascript to run when ModalPopupExtender is shown

Question

The ASP.NET AJAX ModalPopupExtender has OnCancelScript and OnOkScript properties, but it doesn\'t seem to have an OnShowScri

Answer 1

For two modal forms:

var launch = false;
var NameObject = '';

function launchModal(ModalPopupExtender) {
    launch = true;
    NameObject = ModalPopupExtender;
}

function pageLoad() {
    if (launch) {
        var ModalObject = $find(NameObject);
        ModalObject.show();
        ModalObject.add_shown(SetFocus);
                }
} 

function SetFocus() {
    $get('TriggerClientId').focus();
}

Server side: behand

protected void btnNuevo_Click(object sender, EventArgs e)
{
    //Para recuperar el formulario modal desde el lado del sercidor
    ScriptManager.RegisterStartupScript(Page, Page.GetType(), "key", "", false);
}