Assigning a Combobox to a Custom Attribute

[Josh]

Hello,

Using Q3 2009 & IE7, I have the following scheduler code (advanced template code taken from here):

<telerik:RadScheduler ID="RadScheduler1" runat="server" OnAppointmentDelete="RadScheduler1_AppointmentDelete"
                OnAppointmentInsert="RadScheduler1_AppointmentInsert" OnAppointmentUpdate="RadScheduler1_AppointmentUpdate"
                Skin="WebBlue" OnDataBinding="RadScheduler1_DataBinding" SelectedView="WeekView"
                StartEditingInAdvancedForm="true" StartInsertingInAdvancedForm="true" ShowAllDayRow="false"
                OnAppointmentDataBound="RadScheduler1_AppointmentDataBound"
                CustomAttributeNames="avail_type" EnableCustomAttributeEditing="true">
                <AdvancedForm Modal="true" />
                <TimelineView UserSelectable="false" />
                <AdvancedInsertTemplate>
                    <div class="rsAdvancedEdit" style="position: relative">
                        <%-- Title bar.--%>
                        <div class="rsAdvTitle">
                            <%-- The rsAdvInnerTitle element is used as a drag handle when the form is modal. --%>
                            <h1 class="rsAdvInnerTitle">
                                <asp:Label runat="server" ID="titleBarLabel">
               <%# Container.Appointment.Owner.Localization.GetString("AdvancedInsertTitleBar_Callback")%>
                                </asp:Label></h1>
                            <asp:LinkButton runat="server" ID="AdvancedEditCloseButton" CssClass="rsAdvEditClose"
                                CommandName="Cancel" CausesValidation="false" ToolTip='<%# Container.Appointment.Owner.Localization.AdvancedClose %>'>
       <%# Container.Appointment.Owner.Localization.AdvancedClose%>
                            </asp:LinkButton>
                        </div>
                        <div class="rsAdvContentWrapper">

                        <table>
                        <tr><td>
                        <asp:Label runat="server" ID="AvailabilityLabel">
                        <%# Container.Appointment.Owner.Localization.GetString("AvailabilityLabel_Callback")%>
                        </asp:Label>
                        </td>
                        <td>

                        <telerik:RadComboBox runat="server" ID="AvailComboBox" OnDataBinding="AvailComboBox_DataBinding" Skin="WebBlue" DataValueField="avail_type" DataTextField="avail_name" HighlightTemplatedItems="True" EmptyMessage='<%# Container.Appointment.Owner.Localization.Save %>'>
                        <ItemTemplate>
                        <asp:Image runat="server" ID="AvailabilityDDImage" ImageUrl='<%# "~/images/colors/" + Eval("color").ToString().Trim() + ".gif" %>' ToolTip='<%# "~/images/colors/" + Eval("color").ToString().Trim() + ".gif" %>' />
                        <asp:Label runat="server" ID="AvailabilityDDLabel" Text='<%# Eval("avail_name") %>'></asp:Label>
                        <asp:HiddenField runat="server" ID="hidAvailType" Value='<%# Bind("avail_type") %>' />
                        </ItemTemplate>
                        </telerik:RadComboBox>
                        </td>

                        </tr>
                        </table>

                            Custom content here...
                            <asp:Panel runat="server" ID="ButtonsPanel" CssClass="rsAdvancedSubmitArea">
                                <div class="rsAdvButtonWrapper">
                   <asp:LinkButton CommandName="Insert" runat="server" ID="InsertButton" CssClass="rsAdvEditSave">
<span><%# Container.Appointment.Owner.Localization.Save%></span>
                   </asp:LinkButton>
                   <asp:LinkButton runat="server" ID="CancelButton" CssClass="rsAdvEditCancel" CommandName="Cancel"
                       CausesValidation="false">
<span><%# Container.Appointment.Owner.Localization.Cancel%></span>
                   </asp:LinkButton>
               </div>
                            </asp:Panel>
                        </div>
                    </div>
                </AdvancedInsertTemplate>
            </telerik:RadScheduler>

Here is the codebehind:

protected void RadScheduler1_AppointmentInsert(object sender, SchedulerCancelEventArgs e)
        {
            string test = e.Appointment.Attributes["avail_type"];
        }

        protected void RadScheduler1_AppointmentUpdate(object sender, AppointmentUpdateEventArgs e)
        {
        }

        protected void RadScheduler1_AppointmentDelete(object sender, SchedulerCancelEventArgs e)
        {
        }

protected void AvailComboBox_DataBinding(object sender, EventArgs e)
        {
            (sender as RadComboBox).Items.Clear();
            DataTable table = new DataTable();
            table.Columns.Add("color");
            table.Columns.Add("avail_name");
            table.Columns.Add("avail_type");

            DataRow row = table.NewRow();
            row["color"] = "Green";
            row["avail_name"] = "Available";
            row["avail_type"] = "AVAIL";
            table.Rows.Add(row);

            row = table.NewRow();
            row["color"] = "Red";
            row["avail_name"] = "Not Available";
            row["avail_type"] = "NOTAVAIL";
            table.Rows.Add(row);

            DataView AvailabilityView = table.DefaultView;

            (sender as RadComboBox).DataSource = AvailabilityView;
            (sender as RadComboBox).SelectedIndex = 0;
        }

In particular, I am having great trouble with the combobox (on appointment insert); I simply cannot get the value of it. The string 'test' always returns null. If I try using DataValueField='<%# Bind("avail_type") %>' in the combobox, the string becomes empty instead. I simply wish to get the selected value of the combobox as a custom appointment attribute so that it may be stored in the database. Any help will be appreciated.

Thank you

[T. Tsonev]

Hi Josh,

Apologies for the delayed response and thank you for sharing the code that you're working on.

Everything looks right with one exception - you must bind the SelectedValue to the custom attribute:

<telerik:RadComboBox runat="server" ID="AvailComboBox"
SelectedValue='<%# Bind("avail_type") %>'
OnDataBinding="AvailComboBox_DataBinding" Skin="WebBlue" DataValueField="avail_type" DataTextField="avail_name" HighlightTemplatedItems="True" EmptyMessage='<%# Container.Appointment.Owner.Localization.Save %>'>
                        <ItemTemplate>
                        <asp:Image runat="server" ID="AvailabilityDDImage" ImageUrl='<%# "~/images/colors/" + Eval("color").ToString().Trim() + ".gif" %>' ToolTip='<%# "~/images/colors/" + Eval("color").ToString().Trim() + ".gif" %>' />
                        <asp:Label runat="server" ID="AvailabilityDDLabel" Text='<%# Eval("avail_name") %>'></asp:Label>
                        <asp:HiddenField runat="server" ID="hidAvailType" Value='<%# Bind("avail_type") %>' />
                        </ItemTemplate>
                        </telerik:RadComboBox>

I hope this helps.

Regards,
Tsvetomir Tsonev
the Telerik team

[Josh]

Thanks Tsvetomir, that did the trick. I never thought to use SelectedValue because it never showed up in IntelliSense. Works like a charm now.

Josh