Sitecore custom field treeview with multiselect

Question

I've created custom treeview field - multiselect treeview.

This field inherited from Sitecore.Shell.Applications.ContentEditor.TreeList with overridden method Add():

public class MultiselectTreeList : TreeList
{
    protected new virtual void Add()
    {
            bool alert = true;
            if (this.Disabled) return;
            string viewStateString = this.GetViewStateString("ID");
            var treeviewEx = this.FindControl(viewStateString + "_all") as TreeviewEx;
            Assert.IsNotNull(treeviewEx, typeof (DataTreeview));
            var listbox = this.FindControl(viewStateString + "_selected") as Listbox;
            Assert.IsNotNull(listbox, typeof (Listbox));
            if (treeviewEx == null)
            {
                SheerResponse.Alert("TreeviewEx control not found..", new string[0]);
            }
            else
            {
                Item[] selectionItems = treeviewEx.GetSelectedItems();
                if (selectionItems == null)
                {
                    SheerResponse.Alert("Select an item in the Content Tree.", new string[0]);
                }
                else
                {
                    foreach (Item selectionItem in selectionItems)
                    {
                        if (this.HasExcludeTemplateForSelection(selectionItem)) return;
                        if (this.IsDeniedMultipleSelection(selectionItem, listbox))
                        {
                            if (alert)
                            {
                                SheerResponse.Alert("You cannot select the same item twice.", new string[0]);
                                alert = false;
                            }
                        }
                        else
                        {
                            if (!this.HasIncludeTemplateForSelection(selectionItem)) return;
                            SheerResponse.Eval("scForm.browser.getControl('" + viewStateString +
                                               "_selected').selectedIndex=-1");
                            var listItem = new ListItem {ID = GetUniqueID("L")};
                            Sitecore.Context.ClientPage.AddControl(listbox, listItem);
                            listItem.Header = this.GetHeaderValue(selectionItem);
                            listItem.Value = listItem.ID + (object) "|" + selectionItem.ID;
                            SheerResponse.Refresh(listbox);
                            SetModified();
                        }
                    }
                }
            }
        }
}

I've registered it in core database: /sitecore/system/Field types/Custom Types/Multiselect Tree List: filled Assembly and Class fields.

Added item with multiselect treelist field. Filled data. Multiple selection works OK.

But when I try to find References using Ribbon->Navigate->Links I don't see references to items (also missed TargetItemId in Links table in master Database).

When I changed it to Sitecore Treeview field - everything works fine.

As far as I understood crawler don't index my field and links not added to database.

Any ideas how to fix this?

Mark Cassidy Mark Cassidy · Accepted Answer · 2015-06-25T08:24:08

Register your field type in App_Config\FieldTypes.config. Once done, future writes to the field will be included in the LinkDatabase.

Sitecore custom field treeview with multiselect

2 Answers