Got it working... thank you princy. I tried the similar code without RadWindowManager but it didnt worked. Is it mandatory to use RadWindowManager to open a radwindow to display the Pdf?
Its not like RadWindowManager is necessary to open a RadWindow to display the Pdf. Since you are using the radopen() to open the RadWindow, RadWindowManager should be present on the page. This is because the RadWindowManager's client-side API is providing the radopen()
function that can easy and quickly replace the standard browser's popup (window.open()).