Problem with RadListView + RadDataPager + DataKeys + ArgumentOutOfRangeException

[Alan T]

<telerik:RadListView ID="rlv_telephone" runat="server" AllowPaging="true" ItemPlaceholderID="pnl_telephone" DataKeyNames="telephone_id">

<telerik:RadDataPager ID="rdp_account_telephone" runat="server" PagedControlID="rlv_telephone"
                                                    PageSize="2" Font-Size="10px">

    Private Sub rlv_telephone_ItemDataBound(ByVal sender As Object, ByVal e As Telerik.Web.UI.RadListViewItemEventArgs) Handles rlv_telephone.ItemDataBound
        If TypeOf (e.Item) Is RadListViewDataItem Then
            Dim item = TryCast(e.Item, RadListViewDataItem)
            Dim datakey As DataKey = Me.rlv_telephone.DataKeyValues(item.DataItemIndex)
            TryCast(item.FindControl("btn_edittelephone"), RadButton).Attributes.Add("onclick", "openTelephone('" & datakey("telephone_id") & "')")
        End If
    End Sub

Private Sub rlv_telephone_NeedDataSource(ByVal sender As Object, ByVal e As Telerik.Web.UI.RadListViewNeedDataSourceEventArgs) Handles rlv_telephone.NeedDataSource
            GetTelephones()
    End Sub

    Protected Sub GetTelephones(Optional ByVal bind As Boolean = False)
        Me.rlv_telephone.DataSource = fe_telephone.functions.get_fe_telephone_list_by_account_id(this_account_id)

        If bind Then
            Me.rlv_telephone.DataBind()
        End If
    End Sub

When the page first loads its fine. When I change page it throws an error on Me.rlv_telephone.DataKeyValues(item.DataItemIndex) stating System.ArgumentOutOfRangeException.

[Andrey]

Hello,

As this help article says you should never call DataBind method when NeedDataSource event is used. Most probably this is the reason why you get the exception. Try to remove the call to the DataBind method and check whether you get the expected behavior.

Kind regards,
Andrey
the Telerik team