best appraoch to deply an event recevier which span multiple subsites

Question

I am working on SharePoint server 2013 web application. And I need to create an event receiver on my lists items. The event receiver will check if the user who create an item is within a specified user group and update some items fields accordingly. Here is the event receiver I am planning to have:-

public override void ItemUpdated(SPItemEventProperties properties)
        {
            DisableEventFiring();
            base.ItemUpdated(properties);
            bool findany = false;

            using (SPSite site = new SPSite(properties.SiteId))
            {
                using (SPWeb web = properties.OpenWeb())
                {
                    try
                    {
                        web.AllowUnsafeUpdates = true;
                        SPListItem currentItem = properties.ListItem;


                        SPGroup group = web.SiteGroups[webname];

                        }
                        SPUser user = properties.Web.CurrentUser;


                        if (currentItem["Team"] == null || currentItem["Team"] == string.Empty)
                        {
                            foreach (var user2 in group.Users)
                            {
                                if (user2.ToString() == user.ToString())
                                {
                                    currentItem["Team"] = "CM";


                                    findany = true;
                                    break;
                                }

                            }
                            if (!findany)
                            {
                                currentItem["Team"] = "IT";
                                //currentItem["Action"] = "Item Added";
                                currentItem.SystemUpdate();
                            }
                        }



                        currentItem.SystemUpdate();

                    }
                    catch (Exception ex)
                    {
                        throw ex;
                    }
                    finally
                    {
                        EnableEventFiring();
                    }

                }
            }
        }

Now my problem is how I can re-use my event receiver on multiple subsites and list. Currently I have the following architecture for my web application:-

• I have a team site collection on the root http://servername/
• Inside it I have a team sub-site http://servername/customers/
• Inside the /customers/ subsite I have many subsites; http://servername/customers/customerA , http://servername/customers/customerB , etc…
• Inside each of the customerA, customerB , etc subsites I have 4 issue tracking lists.
• Each list uses different site content type.
• Now the event receiver I want to use will be targeting all the customers’ subsites. And only on one issue tracking list which is named “Tracking”.
• In another words I want I event receiver to be targeting all the lists named “Tracking” found inside all the subsites under the /customers/ sub site. Or to be targeting all the lists “whatever are their name” that uses a site content type named “CustomersTracking”.

So I want to target the event receiver to a group of lists which have these things in common :-

• Have the same list name (Tracking) and are under the parent subsite /customers/
• Share the same site content type and all are under the parent subsite /customers/

So can anyone advice how I can target my event receiver to those lists only?

Thanks

Answer 1

You can deploy your event receiver as a Web scoped feature. As you say that all your lists in your subsites have the same name (Tracking)- you can open the elements.xml file for your event receiver and change the Receivers tag as below

<Receivers ListUrl="Lists/Tracking">

You can activate this feature on each subsite whenever it gets created using the SPWebEventReceiver WebProvisioned method

Answer 2

• If you need to apply it to a specific one list, do it as the @HarryB suggest <Receivers ListUrl="Lists/ListView" >. But I need to add more calarafication where this URL does not include the subsite URL.

  • For Example: the List URL at your subsite is http://servername/customers/customerA/Lists/ListView so you should get only Lists/ListView

• If you need to apply it to all lists that have Issue Tracking content type, try to modify your Element.xml that located at your project within solution explorer to ListTemplateId="1100" as shown below

• If you need to apply it to specific multiple lists that have Issue Tracking content type ( this option is your case),

  • Try to modify your Element.xml at your solution explorer to ListTemplateId="1100"
  • And at your code check if the current list ID = your list Id then execute your code as the following

Final Code:

     public override void ItemUpdated(SPItemEventProperties properties)
      {
        DisableEventFiring();
        base.ItemUpdated(properties);
        bool findany = false;

        using (SPSite site = new SPSite(properties.SiteId))
        {
            using (SPWeb web = properties.OpenWeb())
            {
                try
                {
                    string[] ListIDs = { "{e9b842e6-0030-456f-b543-46c837a90c85}", "{e9b842e6-0030-456f-b543-46c837a90c77}" };
                    bool found = false;
                    string currentListID = properties.ListId.ToString();
                    foreach (string x in ListIDs)
                     {
                        if (currentListID.Contains(x))
                           {
                                found = true;
                           }
                     }

                    if (found == true)
                    {

                    web.AllowUnsafeUpdates = true;
                    SPListItem currentItem = properties.ListItem;


                    SPGroup group = web.SiteGroups[webname];


                    SPUser user = properties.Web.CurrentUser;


                    if (currentItem["Team"] == null || currentItem["Team"] == string.Empty)
                    {
                        foreach (var user2 in group.Users)
                        {
                            if (user2.ToString() == user.ToString())
                            {
                                currentItem["Team"] = "CM";


                                findany = true;
                                break;
                            }

                        }
                        if (!findany)
                        {
                            currentItem["Team"] = "IT";
                            //currentItem["Action"] = "Item Added";
                            currentItem.SystemUpdate();
                        }
                    }



                    currentItem.SystemUpdate();

                }}
                catch (Exception ex)
                {
                    throw ex;
                }
                finally
                {
                    EnableEventFiring();
                }

            }
        }
    }

Replace your List ID's at this array string[] ListIDs = { "{e9b842e6-0030-456f-b543-46c837a90c85}", "{e9b842e6-0030-456f-b543-46c837a90c77}" }; based on your list ID of your lists.

To get list ID

• Go to list > list setting at this section in your url get this bold ID listedit.aspx?List=%7BE9B842E6%2D0030%2D456F%2DB543%2D46C837A90C85%7D

• And replace %2D = - and %7D = }