How can I create a new page on Site Settings page, Site collection Administration section?

Question

How can I create a new page on Site Settings page, Site collection Administration section?

I already know how to do it on central administration, but how to do it in this section for each site collection administration?

Answer 1

You need to create a custom action with right location. In your case it should be:

<CustomAction
        Id="MyNewPage"
        GroupId="SiteCollectionAdmin"
        Location="Microsoft.SharePoint.SiteSettings"
        Sequence="40"
        Title="My new page"
        Description="Description">
        <UrlAction Url="_layouts/mynewpage.aspx" />
        </CustomAction>

And you need to deploy it inside a feature with the right scope - Farm or WebApplication if you want this customization to appear in every site collection. Here's teh list of all avilable locations: http://msdn.microsoft.com/en-us/library/ie/bb802730.aspx