Show custom action in ribbon for only one list

Question

Does anyone knows how to show a custom action in the ribbon for only one list? At this moment I've got multiple custom lists, but my button is added on all of them. I only want to show it on one particular list...

(I found a simular question, but there isn't a good solution for it)

Answer 1

You can associate your custom action to a specific list by using the RegistrationId property.

Example:

<CustomAction ControlAssembly="MagicalProject.Actions" 
                ControlClass="MagicalProject.Actions" 
                ControlSrc="/_layouts/MagicalSite/MagicalPage.aspx" 
                Description="This is my custom action which does magical stuff" 
                GroupId="MyMagicalActions" 
                Id="f5bcd75e-23b9-4623-9a82-41cc7ceb10a6" 
                RegistrationId="MyMagicalList" // Or whatever other identifier you have for your lists
                RegistrationType="List" 
                RequireSiteAdministrator="false" 
                Rights="AddListItems" 
                Sequence="1" 
                ShowInReadOnlyContentTypes="false" 
                ShowInSealedContentTypes="false" 
                Title="MyCustomAction">

UPDATE: It also applies for ContentTypes. So if you associate it with a contenttype, then all lists inheriting that specific contenttype will also get this custom action. In case you wanted to know how to put it on more than 1 list.

All it takes is changing RegistrationType from List to ContentType

Answer 2

I've made some research on the subject of RegistrationId and RegistrationType according to declarative Ribbon customization. All my findings can be found here:

RegistrationType & RegistrationId in SharePoint 2010 declarative Ribbon customizations

As a short summary: You can use all four registration types to target some content for Ribbon customization.

And concerning your question: There's no direct option to specify single list instance by means of registrationid. But there's a workaround; you can create an unique content type for your specific list and use RegistrationType = ContentType to target it.

Another way you can go is the programmatic Ribbon customization.

Answer 3

You can use EnabledScript parameter in CommandUIHandler, where you can put javascript code and check if specific page/list/view is loaded.

Example:

<CommandUIHandler 
  Command="Ribbon.ListItem.CustomGroup.Controls.BtnSayHello.Command"
  CommandAction="javascript:alert('Hello');"
  EnabledScript="javascript:
    function isEnable(){
      if(location.href.indexOf('AllItems.aspx') > 0){
        return true;
      }
      return false;
    }
    isEnable();"
/>