POSSIBLE BUG: RadComboBox in UserControl - problem with binding data via RadGrid ItemDataBound event

[Ignjat]

Hello!

I'm having some serious issues with RadComboBox which behaves erratically. The problem is I can't bind the data from ItemDataBound event of the RadGrid to the RadComboBox that is inside the UserControl. I always get errors that there is something wrong with binding even though it should work properly.

Here are the code snippets:

TicketUserControl.ascx

<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="TicketUserControl.ascx.cs"
    Inherits="IDE_Ticketing_System__Telerik_.UserControls.TicketUserControl" %>
<table>
    <tr>
        <td>
            Nadređeni ticket:
        </td>
        <td colspan="3">
            <telerik:RadComboBox ID="rcbNadredeniTicket" DataTextField="OpisTicketa" DataValueField="idTicket"
                AppendDataBoundItems="true" Text='<%# DataBinder.Eval(Container, "DataItem.idNadredeniTicket") %>'
                runat="server" Width="455px">
            </telerik:RadComboBox>
        </td>
    </tr>
    <tr>
        <td>
            Asset:
        </td>
        <td colspan="3">
            <telerik:RadComboBox ID="rcbAsseti" AppendDataBoundItems="true"
                runat="server" Width="455px">
            </telerik:RadComboBox>
        </td>
    </tr>
    <tr>
        <td>
            Opći prioritet:
        </td>
        <td>
            <asp:TextBox ID="txtOpciPrioritet" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.OpciPrioritet") %>'></asp:TextBox>
        </td>
    </tr>
    <tr>
        <td>
            Tip:
        </td>
        <td>
            <telerik:RadComboBox ID="rcbTip" Text='<%# DataBinder.Eval(Container, "DataItem.Tip") %>'
                runat="server">
            </telerik:RadComboBox>
        </td>
    </tr>
    <tr>
        <td>
            Status:
        </td>
        <td>
            <telerik:RadComboBox ID="rcbStatus" Text='<%# DataBinder.Eval(Container, "DataItem.Status") %>'
                runat="server">
            </telerik:RadComboBox>
        </td>
    </tr>
    <tr>
        <td>
            Datum prijave:
        </td>
        <td>
            <asp:TextBox ID="txtDatumPrijave" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.DatumPrijave") %>'></asp:TextBox>
        </td>
        <td>
            Vrsta prijave:
        </td>
        <td>
            <telerik:RadComboBox ID="rcbVrstaPrijave" Text='<%# DataBinder.Eval(Container, "DataItem.VrstaPrijave") %>'
                runat="server">
            </telerik:RadComboBox>
        </td>
    </tr>
    <tr>
        <td>
            Prioritet:
        </td>
        <td>
            <telerik:RadComboBox ID="rcbPrioritet" Text='<%# DataBinder.Eval(Container, "DataItem.Prioritet") %>'
                runat="server">
            </telerik:RadComboBox>
        </td>
        <td>
            Deadline:
        </td>
        <td>
            <asp:TextBox ID="txtDeadline" runat="server" Text='<%# DataBinder.Eval(Container, "DataItem.DatumDo") %>'></asp:TextBox>
        </td>
    </tr>
    <tr>
        <td>
            Opis:
        </td>
        <td colspan="3">
            <asp:TextBox ID="txtOpis" runat="server" TextMode="MultiLine" Width="455px" Height="200px"
                Text='<%# DataBinder.Eval(Container, "DataItem.Opis") %>'></asp:TextBox>
        </td>
    </tr>
    <tr>
        <td>
            Zatvoren ticket:
        </td>
        <td>
            <asp:CheckBox ID="chkZatvoren" runat="server" Checked='<%# CheckNull(DataBinder.Eval(Container, "DataItem.Zatvoren")) %>' />
        </td>
    </tr>
    <tr>
        <td>
            Opis zatvorenog ticketa:
        </td>
        <td colspan="3">
            <asp:TextBox ID="txtOpisZatvorenog" runat="server" TextMode="MultiLine" Width="455px"
                Height="200px" Text='<%# DataBinder.Eval(Container, "DataItem.OpisZatvoren") %>'></asp:TextBox>
        </td>
    </tr>
    <tr>
        <td>
            <asp:Button ID="btnUpdate" Text="Spremi" runat="server" CommandName="Update" Visible='<%# !(DataItem is Telerik.Web.UI.GridInsertionObject) %>'>
            </asp:Button>
            <asp:Button ID="btnInsert" Text="Spremi" runat="server" CommandName="PerformInsert"
                Visible='<%# DataItem is Telerik.Web.UI.GridInsertionObject %>'></asp:Button>

            <asp:Button ID="btnCancel" Text="Odustani" runat="server" CausesValidation="False"
                CommandName="Cancel"></asp:Button>
        </td>
    </tr>
</table>

TvrtkaWebForm.aspx (the one with RadGrid)

<telerik:RadGrid ID="gvTicketi" runat="server" AllowPaging="True" AllowSorting="True"
    AutoGenerateColumns="False" CellSpacing="0" GridLines="None"
    onneeddatasource="gvTicketi_NeedDataSource"
    onitemdatabound="gvTicketi_ItemDataBound"
    oninsertcommand="gvTicketi_InsertCommand">
    <MasterTableView DataKeyNames="idTicket" CommandItemDisplay="TopAndBottom" InsertItemPageIndexAction="ShowItemOnCurrentPage">
        <CommandItemSettings AddNewRecordText="Dodaj novi ticket" RefreshText="Prikaži sve tickete" />
        <Columns>
            <telerik:GridBoundColumn UniqueName="idTicket" HeaderText="Ticket" DataField="idTicket">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn UniqueName="idKontakt" HeaderText="Kontakt" DataField="Kontakt">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn UniqueName="idManager" HeaderText="Manager" DataField="idManager">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn UniqueName="Opis" HeaderText="Opis" DataField="Opis">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn UniqueName="TicketNumber" HeaderText="Broj ticketa" DataField="TicketNumber">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn UniqueName="DatumPrijave" HeaderText="Datum prijave" DataField="DatumPrijave" DataFormatString="{0:dd.MM.yyyy.}">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn UniqueName="VrstaPrijave" HeaderText="Vrsta prijave" DataField="VrstaPrijave">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn UniqueName="Tip" HeaderText="Tip" DataField="Tip">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn UniqueName="Status" HeaderText="Status" DataField="Status">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn UniqueName="Prioritet" HeaderText="Prioritet" DataField="Prioritet">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn UniqueName="OpciPrioritet" HeaderText="Opći prioritet" DataField="OpciPrioritet">
            </telerik:GridBoundColumn>
            <telerik:GridBoundColumn UniqueName="Deadline" HeaderText="Deadline" DataField="DatumDo" DataFormatString="{0:dd.MM.yyyy.}">
            </telerik:GridBoundColumn>
            <telerik:GridCheckBoxColumn UniqueName="Zatvoren" HeaderText="Zatvoren" DataField="Zatvoren">
            </telerik:GridCheckBoxColumn>
            <telerik:GridEditCommandColumn UniqueName="EditCommandColumn">
            </telerik:GridEditCommandColumn>
            <telerik:GridButtonColumn UniqueName="DeleteColumn" Text="Delete" CommandName="Delete"
                ConfirmDialogType="RadWindow" ConfirmText="Brisanje ticketa!" />
        </Columns>
        <EditFormSettings UserControlName="UserControls/TicketUserControl.ascx" EditFormType="WebUserControl">
            <EditColumn UniqueName="EditCommandColumn1">
            </EditColumn>
        </EditFormSettings>
    </MasterTableView>
</telerik:RadGrid>

TvrtkaWebForm.aspx.cs:

protected void gvTicketi_ItemDataBound(object sender, GridItemEventArgs e)
{
    int idFirma = Convert.ToInt16(Request.QueryString["idt"]);

    if ((e.Item is GridEditFormItem) && e.Item.IsInEditMode )
    {
        GridEditFormItem editFormItem = (GridEditFormItem)e.Item;
        UserControl userControl = (UserControl)e.Item.FindControl(GridEditFormItem.EditFormUserControlID);

        TSEntities db = new TSEntities();
        Ticket ticket = new Ticket();

        RadComboBox rcbTip = (RadComboBox)userControl.FindControl("rcbTip");
        rcbTip.Items.Add(new RadComboBoxItem("Incident"));
        rcbTip.Items.Add(new RadComboBoxItem("Reklamacija"));
        rcbTip.Items.Add(new RadComboBoxItem("Nova funkcionalnost"));
        rcbTip.DataBind();

        RadComboBox rcbStatus = (RadComboBox)userControl.FindControl("rcbStatus");
        rcbStatus.Items.Add(new RadComboBoxItem("New"));
        rcbStatus.Items.Add(new RadComboBoxItem("U radu"));
        rcbStatus.Items.Add(new RadComboBoxItem("On hold"));
        rcbStatus.Items.Add(new RadComboBoxItem("Pending"));
        rcbStatus.Items.Add(new RadComboBoxItem("Scheduled"));
        rcbStatus.Items.Add(new RadComboBoxItem("Canceled"));
        rcbStatus.Items.Add(new RadComboBoxItem("Completed"));
        rcbStatus.DataBind();

        RadComboBox rcbVrstaPrijave = (RadComboBox)userControl.FindControl("rcbVrstaPrijave");
        rcbVrstaPrijave.Items.Add(new RadComboBoxItem("Usmeno"));
        rcbVrstaPrijave.Items.Add(new RadComboBoxItem("Telefon"));
        rcbVrstaPrijave.Items.Add(new RadComboBoxItem("E-mail"));
        rcbVrstaPrijave.Items.Add(new RadComboBoxItem("Web"));
        rcbVrstaPrijave.DataBind();

        RadComboBox rcbPrioritet = (RadComboBox)userControl.FindControl("rcbPrioritet");
        rcbPrioritet.Items.Add(new RadComboBoxItem("Low"));
        rcbPrioritet.Items.Add(new RadComboBoxItem("Normal"));
        rcbPrioritet.Items.Add(new RadComboBoxItem("High"));
        rcbPrioritet.Items.Add(new RadComboBoxItem("Odmah"));
        rcbPrioritet.DataBind();

        CheckBox chkNadreden = (CheckBox)userControl.FindControl("chkNadreden");

        RadComboBox rcbNadredeniTicket = (RadComboBox)userControl.FindControl("rcbNadredeniTicket");
        var nadredenTicketList = (from t in db.Ticket
                                    select t).ToList();

        rcbNadredeniTicket.DataSource = from t in nadredenTicketList
                                        where t.idFirma == idFirma && t.Zatvoren == false
                                        select new { t.idTicket, OpisTicketa = t.idTicket + " - " + t.Opis };

        rcbNadredeniTicket.Items.Add(new RadComboBoxItem("Bez nadređenog ticketa", "0"));
        rcbNadredeniTicket.DataBind();

        RadComboBox rcbAsset = (RadComboBox)userControl.FindControl("rcbAsset");
        var ticketAssetList = (from a in db.Asset
                               where a.idFirma == idFirma
                               select a).ToList();

        if (ticketAssetList.Count > 0)
        {
            var assets = from a in db.Asset
                         where a.idFirma == idFirma
                         select new { a.idAsset, a.Naziv };

            rcbAsset.DataSource = assets;
            rcbAsset.DataTextField = "Naziv";
            rcbAsset.DataValueField = "idAsset";
            rcbAsset.Text = "'<%# DataBinder.Eval(Container, 'DataItem.Naziv') %>'";
            rcbAsset.DataBind();
        }


        if (!e.Item.OwnerTableView.IsItemInserted)
        {
            int idTicket = Convert.ToInt32(editFormItem.GetDataKeyValue("idTicket"));
            ticket = db.Ticket.SingleOrDefault(t => t.idTicket == idTicket);

            string tip = ticket.Tip;
            rcbTip.Items.FindItemByText(tip).Selected = true;

            string status = ticket.Status;
            rcbStatus.Items.FindItemByText(status).Selected = true;

            string vrstaPrijave = ticket.VrstaPrijave;
            rcbVrstaPrijave.Items.FindItemByText(vrstaPrijave).Selected = true;

            string prioritet = ticket.Prioritet;
            rcbPrioritet.Items.FindItemByText(prioritet).Selected = true;

        }
    }
}

The problem occurs in the line with RadComboBox rcbAsset. The problem is a bit urgent so any help would be appreciated!

[Shinu]

Hello Ignjat,

After examining your code you have given the ID of RadComboBox in UserControl as rcbAsseti.
C#:


RadComboBox rcbAsset = (RadComboBox)userControl.FindControl("rcbAsseti");

So try accessing the RaDComboBox with same ID

Thanks,
Shinu.

[Ignjat]

Oh... Now I feel bad for panicking (and for losing almost 15 hours on this). Thank you!

As they say in my country: "Two heads are always better than just one!"