When you’re building Apps for SharePoint 2013 you can create Pages, Client Parts or CustomActions.
For ECB CustomActions you can provide an URL-Action which redirects the user to a URL defined by you (the App developer). You can add various tokens to the URL, as a SharePoint developer you’re perhaps aware of this functionality from previous SharePoint versions.
As an App developer you would redirect the user from the ECB to a page sitting in your App (either within the AppWeb or in the RemoteWeb) in both cases clicking your ECB CustomAction will cause a HTTP Redirect, which may break the users Workflow.
SharePoint 2013 is offering a solution if you don’t want to navigate away from the current ListView. You can display the target as a modal dialog by adding three simple properties to your CustomAction. Figure 1 shows the required XML Properties in order to display your UrlAction as a modal dialog within SharePoint 2013.
ECB Modal Dialog[/caption] If you’re doing this within a SharePoint-Hosted App, you have to explicitly activate Framing support within your Page by adding the
<WebPartPages:AllowFraming /> tag to your page as shown in the snippet.
<asp:Content ContentPlaceHolderID="PlaceHolderMain" runat="server"> <WebPartPages:AllowFraming ID="AllowFraming" runat="server" /> <div> This is my aweome Dialog shipped within a SharePoint hosted app www.xplatform.rocks </div> </asp:Content>
Figure 2 shows the created dialog, that has been launched from the ECB (directly from within the HostWeb)
I hope this post was helpful for you. If so, please feel free to leave a comment!