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Get values out of multi-select combobox

I have a dropdown list bound to a User/Group type field of a SharePoint list. I can select multiple users and would like to collect their email address. I expected that this would work. My delimiter is ;, that is correct.

Concat(lsOwner.SelectedItems.DisplayName; ";")

The problem is that this returns only empty strings. I have 2 users selected, and the result is ;;. To check, if the values present, I mapped the result to a listbox and there I can see the 2 mail addresses. Just to be curious, I tried to collect the addresses from the listbox like:

Concat(ListBox1.SelectedItems.Value ;"")
Concat(ListBox1.SelectedItems.Email ;"")

Both of them returned empty strings (even tough the email address were visible in the list), when I selected one or more. Please, somebody tell me what do I do wrong. Thanks in advance.

Solution

  • The second parameter of the Concat function is the expression that will be applied to the records of the first parameter. What you want is likely the following expression:

    Concat(
    lsOwner.SelectedItems;
    DisplayName;
    ";")