Prevent editing/creating documents in list

Question

I have a webpart from a child list on the parent display form, and this is the only area that I would like for users to add new items to the child list. Restricting permissions on the list to remove edit/delete from everyone wouldn't work because that would also affect their permissions on the web part of that list. Is there a way to hide the "new item" button only on the actual list?

If making the chrome type "No Toolbar" should remove this, it's not doing it. Here are the screenshots:

What I want hidden/disabled only on this webpart:

What I changed based on recommendation below:

Answer 1

I am assuming you are working on a SharePoint custom solution in Visual Studio. Add an empty element to your SharePoint solution. Add the following Xml to the Elements.xml file of the added element:

<Elements xmlns="http://schemas.microsoft.com/sharepoint/"> <CustomAction RegistrationId="Your List Id Here" RegistrationType="List" Location="CommandUI.Ribbon" Id="HideRibbonButtons"> <CommandUIExtension> <CommandUIDefinitions> <CommandUIDefinition Location="Ribbon.ListItem.New.NewListItem"/> </CommandUIDefinitions> </CommandUIExtension> </CustomAction> </Elements>

Make sure that the element is added to the feature and deploy.

Answer 2

use this javascript to hide it

<script type="text/javascript">
var elem = document.getElementById("Ribbon.ListItem.New-LargeLarge");
elem.style.display = "none";
</script>