download excel file with response.contenttype

can a download of excel file with response. contenttype be proccessed without the saveas window so th开发者_如何学Goe file will be opened automaticly?

In general, no. I think the only way this will work is if each and every client had an appropriate plug-in (like Adobe has for Acrobat), so that the browser would know what to do with the content.

With out the plug-in, the best you can do is have the Open/Save As/Cancel dialog open up, or, specify that via the content-disposition that this is an attachment and always have the Save As dialog open up, optionally with a predefined file name.