Samuel Cazelli

 

Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler);

function EndRequestHandler(sender, args) {
    if (args.get_error() != undefined && args.get_error().httpStatusCode == '500') {
        var errorMessage = args.get_error().message
        args.set_errorHandled(true);
        alert('"' + errorMessage + '" '); //Tratar o erro aqui, para exemplo é exibido apenas um alert
    }

}
.

    <asp:ScriptManager ID="ScriptManager1" runat="server">
        <Scripts>
            <asp:ScriptReference Path="~/Js/jquery.js" />
            <asp:ScriptReference Path="~/Js/custon.js" />
        </Scripts>
    </asp:ScriptManager>

 

width = window.innerWidth || document.documentElement.clientWidth || document.body.offsetWidth;

height = window.innerHeight || document.documentElement.clientHeight || document.body.offsetHeight;

.