[Solved] RadComboBox is not posting back.

[Todd Hile-Hoffer]

<%@ Page Title="" Language="C#" MasterPageFile="~/Site.Master" AutoEventWireup="true"
    CodeBehind="Tolerance.aspx.cs" Inherits="GainLossSettlement.Tolerance" StylesheetTheme="Default" %>

<%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>
<asp:Content ID="Content1" ContentPlaceHolderID="head" runat="server">
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" runat="server">
    <h2>
        <span>Tolerance Percentage By Terminal / Product / Supplier</span></h2>
    <telerik:RadScriptBlock runat="server">

        <script type="text/javascript">
            function showBottem() {
                document.getElementById('divContainer').style.visibility = '';
            }

            function hideBottem() {
                var item = document.getElementById('divContainer');
                item.style.visibility = 'hidden';
            }
        </script>

    </telerik:RadScriptBlock>
    <telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">
        <AjaxSettings>
            <telerik:AjaxSetting AjaxControlID="rcbTerminals">
                <UpdatedControls>
                    <telerik:AjaxUpdatedControl ControlID="rcbProducts" LoadingPanelID="radLoadingProducts" />
                    <telerik:AjaxUpdatedControl ControlID="rcbSuppliers" LoadingPanelID="RadLoadingSupplier" />
                </UpdatedControls>
            </telerik:AjaxSetting>
            <telerik:AjaxSetting AjaxControlID="rcbProducts">
                <UpdatedControls>
                    <telerik:AjaxUpdatedControl ControlID="rcbSuppliers" LoadingPanelID="RadLoadingSupplier" />
                </UpdatedControls>
            </telerik:AjaxSetting>
        </AjaxSettings>
    </telerik:RadAjaxManager>
    <br />
    <div class="clear">
    </div>
    <label class="controlLabel">
        Terminal<span class="small">Select Terminal</span></label>
    <telerik:RadComboBox ID="rcbTerminals" runat="server" Skin="WebBlue" LoadingMessage="Loading..."
        MarkFirstMatch="true" EnableLoadOnDemand="true" AutoPostBack="True" OnSelectedIndexChanged="rcbTerminals_SelectedIndexChanged"
        Width="17em" CssClass="radControl">
    </telerik:RadComboBox>
    <div class="clear">
    </div>
    <label class="controlLabel">
        Product<span class="small">Select Product</span></label>
    <telerik:RadComboBox ID="rcbProducts" runat="server" Skin="WebBlue" LoadingMessage="Loading..."
        MarkFirstMatch="true" EnableLoadOnDemand="true" Width="17em" CssClass="controlLabel"
        AutoPostBack="True" OnSelectedIndexChanged="rcbProducts_SelectedIndexChanged">
    </telerik:RadComboBox>
    <telerik:RadAjaxLoadingPanel ID="radLoadingProducts" runat="server" IsSticky="True"
        MinDisplayTime="1000" CssClass="small">
        <asp:Image ID="loading" runat="server" ImageUrl="~/App_Themes/Default/Images/Web20.gif"
            Height="18px" Width="18px" />Loading...
    </telerik:RadAjaxLoadingPanel>
    <div class="clear">
    </div>
    <label class="controlLabel">
        Supplier<span class="small">Select Supplier</span></label>
    <telerik:RadComboBox ID="rcbSuppliers" runat="server" Skin="WebBlue"
        MarkFirstMatch="true"  Width="17em" CssClass="controlLabel"
        AutoPostBack="True" OnSelectedIndexChanged="rcbSuppliers_SelectedIndexChanged">
    </telerik:RadComboBox>
    <telerik:RadAjaxLoadingPanel ID="RadLoadingSupplier" runat="server" IsSticky="True"
        MinDisplayTime="1000" CssClass="small">
        <asp:Image ID="Image1" runat="server" ImageUrl="~/App_Themes/Default/Images/Web20.gif"
            Height="18px" Width="18px" />Loading...
    </telerik:RadAjaxLoadingPanel>
    <br />
    <div class="clear">
    </div>
    <br />
        <div id="divContainer" class="divContainer">
            <fieldset>
                <legend title="Tolerance Rate">Current Tolerance Rate</legend>
                <div class="divPaddedContainer">
                    <label class="controlLabel">
                        Rate:</label><asp:Label ID="lblCurrentRate" runat="server"></asp:Label>
                    <asp:Label ID="lblIsDefault" runat="server" Text="*"></asp:Label>
                    <div class="clear">
                    </div>
                    <label class="controlLabel">
                        Effective As Of:</label><asp:Label ID="lblEffectiveDate" runat="server"></asp:Label><div
                            class="clear">
                        </div>
                </div>
            </fieldset>
            <br />
            <br />
            <fieldset>
                <legend title="New Tolerance Rate">New Tolerance Rate</legend>
                <div class="divPaddedContainer">
                    <label class="controlLabel">
                        Rate:</label>
                    <telerik:RadNumericTextBox ID="rtbNewRate" runat="server" Width="8em" Skin="WebBlue">
                        <NumberFormat DecimalDigits="4" GroupSeparator="" />
                    </telerik:RadNumericTextBox>
                    <asp:CheckBox ID="cbNewDefault" runat="server" Text="Use Default Rate"></asp:CheckBox>
                    <div class="clear">
                    </div>
                    <label class="controlLabel">
                        Effective Date:
                    </label>
                    <telerik:RadDatePicker ID="rdpNewEffectiveDate" runat="server" Skin="Web20" Width="8em">
                        <Calendar UseRowHeadersAsSelectors="False" UseColumnHeadersAsSelectors="False" ViewSelectorText="x"
                            Skin="Web20">
                        </Calendar>
                        <DatePopupButton ImageUrl="" HoverImageUrl=""></DatePopupButton>
                    </telerik:RadDatePicker>
                    <div class="clear">
                    </div>
                </div>
            </fieldset>
            <br />
            <br />
            <span>*</span><span class="smallInline"> Default Tolerance</span>
        </div>
    <div class="clear">
    </div>
</asp:Content>

Can anyone help me figure out why rcbSuppliers is not causing a postback? When I remove the ajax manager the control works and the postback occurs. But for some reason rcbSuppliers is doing an ajax request instead of a post back. Why would this be?

[Martin]

Hello Todd,

I would suggest you to AJAX-ify the rcbSuppliers combobox through the RadAjaxManager. Then you can wire the OnRequestStart client-side event and check which combobox triggers the callback. The callback can be replaced with a postback if you set eventArgs.set_enableAjax(false) in the OnRequestStart event handler.
Please check the attached demo project for the details.

I hope this helps
Martin
the Telerik team

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