StaffPerformance/wispro.sp.web/Components/UserConditionInput.razor

<Select DataSource="@UserItems"
        @bind-Value="@UserValue"
        ValueName="@nameof(UserItem.Value)"
        LabelName="@nameof(UserItem.Label)"
        GroupName="@nameof(UserItem.GroupName)"
        OnSelectedItemChanged="OnSelectedItemChangedHandler"
        EnableSearch
        Style="width: 100%;">
</Select>