问题:

Is there any way to display an extension pages dialog box when my page loads?

回答1:

Add a <xp:scriptBlock /> with the following client-side code as its value:

XSP.addOnLoad(function(){XSP.openDialog("#{id:dlgMessage}");});

...just be sure to place the component outside any refresh targets, or it will launch the dialog again after every partial refresh event with a target that includes it.

回答2:

Try adding a dojo.addOnLoad() (in a xp:scriptblock) that displays the dialog using CSJS: XSP.openDialog()

回答3:

Bruce,

You could use jQuery to 'push' the button on page load.

Try putting this clientside js code in your onClientLoad event

$(document).ready(function(){
    $('a.btn').trigger('click');
});

You will have to load jQuery to use this if you don't already have it loaded. You might also be able to do the same thing with dojo.

EDIT: You might have to modify the selector (the tag and class in the parens line 2) above if not using bootstrap. I would give it a unique class so as not to 'push' any other buttons at the same time.