JavaScript Code
Taken from /Scripts/KendoUiExt.AlertDialog.js
        
var selectIcon = $("#selectIcon")
    .kendoDropDownList()
    .data("kendoDropDownList");

$.when(kendo.ui.ext.AlertDialog.show({
    title: "Alert!", 
    message: "This is a sample alert box",
    icon: selectIcon.value() })
).done(function () {
    $("#userResponse").append(
        kendo.format("<div>OK button clicked at: {0}</div>", 
            new Date().toLocaleTimeString())
    );
});