How to get the URL of the current page in CSOM

Question

I have a SharePoint add-in that create a "button" on the page ribbon. When the user clicks on the button, it makes a call to a provider hosted app that resides in Azure. The request goes through, but I need to know the URL of the page where the button was clicked. For example, the page where the icon is clicked is:

https://xxx.sharepoint.com/sites/TDC/en-us/SitePages/Test4.aspx

In my AppManifest.xml, I have the following:

<StartPage>https://yyy.azurewebsites.net?{StandardTokens}&amp;SPSource={Source}&amp;SPItemURL={ItemUrl}</StartPage>

In my elements.xml, I have the following:

<UrlAction Url="~remoteAppUrl/ContentExport.aspx?{StandardTokens}&amp;SPSource={Source}&amp;SPItemURL={ItemUrl}"></UrlAction>

<CommandUIHandler Command="Invoke_ContentExportAction3ButtonRequest"
                      CommandAction="~remoteAppUrl/ContentExport.aspx?{StandardTokens}&amp;SPSource={Source}&amp;SPItemURL={ItemUrl}"/>

The ItemUrl does not get resolved, which I believe makes sense for a StartPage. The source gives me the following:

SPSource='https://tdctranslations.sharepoint.com/sites/TDC/en-us/_layouts/15/commandui.ashx'

Is it possible to get the URL of Test4.aspx?

Answer 1

Can you try this -

1. Get the current url of the SharePoint site.

   Asp.Net - System.Web.HttpContext.Current.Request.Path

   Javascript - window.location.href

2. Pass it to the app as a url parameter -

   <url>?RequestSource='<path>'
   

3. Decode it in the app

   Request.QueryString["RequestSource"];