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Problem with Radcombox selected index changed event

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ComboBox

This is a migrated thread and some comments may be shown as answers.

Nandita Kotha asked on 14 Mar 2010, 10:35 PM

Hi,

I have 4 rad combo boxes in my page.

Below is my aspx page code...

<%@ Page Language="VB" AutoEventWireup="false" CodeFile="NewSAModalPopup.aspx.vb" StylesheetTheme="Default" Inherits="SelfAssess_NewSAModalPopup" %>

<%@ Register Assembly="Telerik.Web.UI, Version=2009.2.701.35, Culture=neutral, PublicKeyToken=121FAE78165BA3D4"

Namespace="Telerik.Web.UI" TagPrefix="telerik" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

</head>

<body>

<div>

function GetRadWindow() {

var oWindow = null;

if (window.radWindow)

oWindow = window.radWindow;

else if (window.frameElement.radWindow)

oWindow = window.frameElement.radWindow;

return oWindow;

}

function CancelClick()

{

var oWindow = GetRadWindow();

oWindow.argument = null;

oWindow.close();

top.location.reload();

//window.close();

}

function relaodParentWindow() {

top.location.reload();

}

function closeWin() {

var oWnd = GetRadWindow();

oWnd.close();

top.location.reload();

//window.close();

}

</script>

<telerik:RadScriptManager ID="RadScriptManager1" runat="server">

</telerik:RadScriptManager>

<telerik:RadAjaxManager runat="server" ID="RadAjaxManager1" >

<telerik:AjaxSetting AjaxControlID="c_rcbCustomer">

<telerik:AjaxUpdatedControl ControlID="c_rdbYear" />

<telerik:AjaxUpdatedControl ControlID="c_rcbAssessment" />

<telerik:AjaxUpdatedControl ControlID="c_rcbfacilityContact" />

</UpdatedControls>

</telerik:AjaxSetting>

<telerik:AjaxSetting AjaxControlID="c_rdbYear">

<telerik:AjaxUpdatedControl ControlID="c_rcbAssessment" />

<telerik:AjaxUpdatedControl ControlID="c_rcbfacilityContact" />

</UpdatedControls>

</telerik:AjaxSetting>

<telerik:AjaxSetting AjaxControlID="c_rcbAssessment">

<telerik:AjaxUpdatedControl ControlID="c_rcbfacilityContact" />

</UpdatedControls>

</telerik:AjaxSetting>

</AjaxSettings>

</telerik:RadAjaxManager>

<tr>

<td>

<table>

<tr>

<asp:Label ID="c_lblErrorText" runat="server" Visible="False" Font-Bold="True" ForeColor="Red"></asp:Label>

</td>

</tr>

<tr>

<td>

Step 1:

</td>

<td>

Select the customer

</td>

</tr>

<tr>

<td>

</td>

<td>

<telerik:RadComboBox ID="c_rcbCustomer" runat="server" AutoPostBack="True" Width="205px"

Filter="Contains" LoadingMessage="<div style='width:100%; height:23px; vertical-align:middle; text-align:center;'>Loading <img src='../Images/loading5.gif' /><div>"

EmptyMessage="--Select One--" EnableTextSelection="true" ExpandDelay="0" >

</telerik:RadComboBox>

<asp:RequiredFieldValidator ID="c_rfvCustomer" runat="server" ErrorMessage="Select a customer" ControlToValidate="c_rcbCustomer"></asp:RequiredFieldValidator>

<br />

</td>

</tr>

<tr>

<td >

Step 2:

</td>

<td>

Select the year for which you are entering the data</td>

</tr>

<tr>

<td>

</td>

<td>

<telerik:RadComboBox ID="c_rdbYear" runat="server" AutoPostBack="True" Width="205px"

Filter="Contains" LoadingMessage="<div style='width:100%; height:23px; vertical-align:middle; text-align:center;'>Loading <img src='../Images/loading5.gif' /><div>"

EnableTextSelection="true" ExpandDelay="0" >

</telerik:RadComboBox>

<asp:RequiredFieldValidator ID="c_rfvYear" runat="server"

ErrorMessage="Select a Year" ControlToValidate="c_rdbYear"></asp:RequiredFieldValidator>

<br />

</td>

</tr>

<tr>

<td >

Step 3:

</td>

<td>

Select the assessment to start</td>

</tr>

<tr>

<td>

</td>

<td>

<telerik:RadComboBox ID="c_rcbAssessment" runat="server" AutoPostBack="True" Width="580px"

Filter="Contains" LoadingMessage="<div style='width:100%;vertical-align:middle; text-align:center;'>Loading <img src='../Images/loading5.gif' /><div>"

EmptyMessage="-- Please complete step 1 and 2 --" EnableTextSelection="true"

ExpandDelay="0" >

</telerik:RadComboBox>

<asp:RequiredFieldValidator ID="c_rfvAssessment" runat="server"

ErrorMessage="Select the assessment" ControlToValidate="c_rcbAssessment"></asp:RequiredFieldValidator>

<br />

</td>

</tr>

<tr>

<td >

Step 4:

</td>

<td >

Select the primary contact</td>

</tr>

<tr>

<td>

</td>

<td>

<telerik:RadComboBox ID="c_rcbfacilityContact" runat="server"

AutoPostBack="True" Width="577px"

Filter="Contains" LoadingMessage="<div style='width:100%; height:23px; vertical-align:middle; text-align:center;'>Loading <img src='../Images/loading5.gif' /><div>"

EmptyMessage="-- Please complete step 1 through 3 --" EnableTextSelection="true"

ExpandDelay="0" >

</telerik:RadComboBox>

<br />

</td>

</tr>

</table>

</td>

</tr>

<tr>

<td >                                 

<asp:Button ID="c_btnStart" runat="server" Text="Start" />    

<asp:Button ID="c_btnCancel" runat="server" Text="Cancel"

onclientclick="CancelClick();" />

</td>

</tr>

</table>

</div>

</form>

</body>

</html>

My aspx.vb have the following events:

Protected Sub c_rcbAssessment_SelectedIndexChanged(ByVal o As Object, ByVal e As Telerik.Web.UI.RadComboBoxSelectedIndexChangedEventArgs) Handles c_rcbAssessment.SelectedIndexChanged

LoadFacilityContact(c_rcbAssessment.SelectedValue)

End Sub

Protected Sub c_rdbYear_SelectedIndexChanged(ByVal o As Object, ByVal e As Telerik.Web.UI.RadComboBoxSelectedIndexChangedEventArgs) Handles c_rdbYear.SelectedIndexChanged

LoadSelfAssessments(c_rcbCustomer.SelectedValue, c_rdbYear.SelectedValue)

End Sub

Protected Sub c_rcbCustomer_SelectedIndexChanged(ByVal o As Object, ByVal e As Telerik.Web.UI.RadComboBoxSelectedIndexChangedEventArgs) Handles c_rcbCustomer.SelectedIndexChanged

LoadYear()

End Sub

when I change the selection in the year comboxbox, c_rdbYear_SelectedIndexChanged is being fired which is fine.Now, when I change the selection in c_rcbAssessment combobox, c_rcbCustomer_SelectedIndexChanged is being fired first and then c_rcbAssessment_SelectedIndexChanged is fired.I dont know why c_rcbCustomer_SelectedIndexChanged is being fired.It want only c_rcbAssessment combobox to be fired.

And also when I change the year combobox selection again,it is firing c_rcbCustomer_SelectedIndexChanged first and then c_rdbYear_SelectedIndexChanged.

Any kind of help would be appreciated.

Thanks.

10 Answers, 1 is accepted

answered on 16 Mar 2010, 02:54 PM

Hi Nandita Kotha,

Could you please show me the code of the methods for binding the RadCombos:

LoadFacilityContact, LoadSelfAssessments and LoadYear.

At this moment I've tested your code with adding elements of the RadCombos in .aspx just to see how the SelectedIndexChanged is behaving. It works OK. Maybe there is something in your methods which causes the firing of SelectedIndexChanged events.

Thank you.

All the best,
Veronica Milcheva
the Telerik team

Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Public Issue Tracking system and vote to affect the priority of the items.

answered on 16 Jun 2011, 07:12 AM

Hello,

i am having same problem, my code is as below, i have tried to create function for feeling comboboxes but it doesn't work either

this is my ajax settings

<telerik:AjaxSetting AjaxControlID="ddlCountry">

<UpdatedControls>

<telerik:AjaxUpdatedControl ControlID="Sdp" LoadingPanelID="PanelLoading" />

</UpdatedControls>

</telerik:AjaxSetting>

<telerik:AjaxSetting AjaxControlID="ddlState">

<UpdatedControls>

<telerik:AjaxUpdatedControl ControlID="Sdp" LoadingPanelID="PanelLoading" />

</UpdatedControls>

</telerik:AjaxSetting>

<telerik:AjaxSetting AjaxControlID="ddlCIty">

<UpdatedControls>

<telerik:AjaxUpdatedControl ControlID="Sdp" LoadingPanelID="PanelLoading" />

</UpdatedControls>

</telerik:AjaxSetting>

this are my events

protected void ddlCountry_SelectedIndexChanged(object o, RadComboBoxSelectedIndexChangedEventArgs e)

{

ddlState.Items.Clear();

if (ddlCountry.SelectedItem != null) ddlState.FillControlSP();

ddlState_SelectedIndexChanged(ddlState, new RadComboBoxSelectedIndexChangedEventArgs("", "", "", ""));

}

protected void ddlState_SelectedIndexChanged(object o, RadComboBoxSelectedIndexChangedEventArgs e)

{

ddlCIty.Items.Clear();

if (ddlState.SelectedItem != null) ddlCIty.FillControlSP();

ddlCIty_SelectedIndexChanged(ddlCIty, new RadComboBoxSelectedIndexChangedEventArgs("", "", "", ""));

}

protected void ddlCIty_SelectedIndexChanged(object o, RadComboBoxSelectedIndexChangedEventArgs e)

{

ddlSubDistrict.Items.Clear();

if (ddlCIty.SelectedItem != null) ddlSubDistrict.FillControlSP();

}

answered on 28 Jul 2011, 06:15 PM

I was having the same issue but only on the web server...worked fine on my local development environment so I assume it has to do something with the OS or web environment on the server. The way I overcame this issue is to check if the combobox value in each selectedindexchanged event changed and only perform the related logic if the event was triggered by the associated combobox.

protected void ClinicID_SelectedIndexChanged(object o, Telerik.Web.UI.RadComboBoxSelectedIndexChangedEventArgs e)

{

if (!e.Value.Equals(e.OldValue))

{

//perform some logic that should happen only ClinicID combobox changed

}

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Problem with Radcombox selected index changed event

10 Answers, 1 is accepted