In this article, I will Show

How to display a SharePoint list from Parent site in Sub Site?

Scenario

In SharePoint 2016, I have a list in the parent site, I would like to show this list inside a page in the subsite.

So that when adding a new item to this list from the subsite, it should also be listed in the same original list in the parent site and vice versa.

Note: You can use the same steps to display a SharePoint list from subsite in parent site.

Solution

You have two options to display a SharePoint list from Parent site in a subsite:

1. Using Data View Web Part.
2. Using Content Query Web Part.

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Using Data View Web Part

• Open your Parent Site via SharePoint Designer 2013.
• Go to File Site Pages > Create a new Page > Check it out > Edit it in Advanced Mode.
• From the above ribbon, Click on Insert > Data View > Select the list that you need to show on the subsite.

Note: In case the data view is disabled check DataView is disabled in SharePoint Designer 2013.

• Once the DataView is added, the ‘List View Tool‘ should be shown in the above ribbon.
• In the ‘List View Tool‘,  at the ‘Web Part‘ tab > Click on ‘To Site Gallery‘.

• At the below dialog, Click on Yes to show the list data from the parent site list URL.

Check the details steps for the above section.

• Now open your subsite > Create a new page > Edit the page.
• Add new web part > At Miscellaneous category > the Exported data view web part should be listed > Add it.

• The Exported List should be now shown properly from the Parent Site in Sub Site.
• Try now to add a new item to the exported list in the Sub Site that should be also shown in the Parent Site and vice versa.

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Using Content Query Web Part

You can use the Content Query Web Part as a supported OOTB solution. In case, you need to query data from Parent Site in Sub Site as the following:

• Open your Page > Click on Add web Part > below Content Rollup > Add Content Query Web Part.

• Click on open the tool pane to edit.
• At Query section, > at Show items from the following list: > click browse to browse any list from any site below the site collection.

Note:  The CQWP is only available in Publishing Template or a site has SharePoint Server Publishing feature activated.

If you don’t have Publishing Template, you will need to

• Activate SharePoint Server Publishing Infrastructure in the Site Collection Feature below Site Collection Administration.

• Activate SharePoint Server Publishing in Manage Site Features below the Site Actions of the current site.

Note: you should note that activating these features will lead to missing the Save site as a template. For more details check Missing Save Site As Template In SharePoint

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Applies To

• SharePoint Online.
• SharePoint 2016.
• SharePoint 2013.
• SharePoint 2010.

Conclusion 

In this article, we have learned How to

• Display a SharePoint List from Parent Site in Sub Site.
• Display a SharePoint List from Sub Site in Parent Site.

See Also

Check my answer at SharePoint.StackExchange.