Telerik Forums / UI for ASP.NET AJAX
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IE11 When EmptyMessage is set OnSelectedIndexChanged event fires during every post back and properties SelectedIndex, SelectedItem have wrong values

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ComboBox
This is a migrated thread and some comments may be shown as answers.
Yiannis
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Yiannis asked on 26 Feb 2014, 08:57 AM
Set up info:
Telerik version: 2013.2.611.40
Browser: IE 11.0.9600.16476
.NET Framework: 4.0

Symptoms: During Asynch Post Backs when EmptyMessage property is set AND text of the first item is not English (eg. German, Greek) then OnSelectedIndexChange event fires every time although index has not been changed. Further more properties SelectedIndex, SelectedItem and SelectedValue have the wrong values of -1, null and "" respectively

I have prepared a small project to demonstrate the bug but your forum allows only picture format attachments. So here is the test code:

file: Default.aspx

1.%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="Default" %>
02.
03.<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
05.<head runat="server">
06.    <title></title>
07.    <telerik:RadStyleSheetManager ID="RadStyleSheetManager1" runat="server" />
08.</head>
09.<body>
10.    <form id="form1" runat="server">
11.    <telerik:RadScriptManager ID="RadScriptManager1" runat="server">
12.        <Scripts>
13.            <asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.Core.js" />
14.            <asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.jQuery.js" />
15.            <asp:ScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.jQueryInclude.js" />
16.        </Scripts>
17.    </telerik:RadScriptManager>
18.    <script type="text/javascript">
19.        //Put your JavaScript code here.
20.    </script>
21.    <telerik:RadAjaxManager ID="RadAjaxManager1" runat="server">
22.        <AjaxSettings>
23.            <telerik:AjaxSetting AjaxControlID="TestIE">
24.                <UpdatedControls>
25.                    <telerik:AjaxUpdatedControl ControlID="TestIE" />
26.                    <telerik:AjaxUpdatedControl ControlID="SaveValues" />
27.                    <telerik:AjaxUpdatedControl ControlID="TestGrid" />
28.                    <telerik:AjaxUpdatedControl ControlID="SaveButtonResults" />
29.                </UpdatedControls>
30.            </telerik:AjaxSetting>
31.            <telerik:AjaxSetting AjaxControlID="SaveValues">
32.                <UpdatedControls>
33.                    <telerik:AjaxUpdatedControl ControlID="TestIE" />
34.                    <telerik:AjaxUpdatedControl ControlID="SaveValues" />
35.                    <telerik:AjaxUpdatedControl ControlID="TestGrid" />
36.                    <telerik:AjaxUpdatedControl ControlID="SaveButtonResults" />
37.                </UpdatedControls>
38.            </telerik:AjaxSetting>
39.            <telerik:AjaxSetting AjaxControlID="TestGrid">
40.                <UpdatedControls>
41.                    <telerik:AjaxUpdatedControl ControlID="TestIE" />
42.                    <telerik:AjaxUpdatedControl ControlID="SaveValues" />
43.                    <telerik:AjaxUpdatedControl ControlID="TestGrid" />
44.                    <telerik:AjaxUpdatedControl ControlID="SaveButtonResults" />
45.                </UpdatedControls>
46.            </telerik:AjaxSetting>
47.        </AjaxSettings>
48.    </telerik:RadAjaxManager>
49.    <div>
50.        <telerik:RadComboBox runat="server" ID="TestIE" EmptyMessage="Pick one from the list"
51.            OnSelectedIndexChanged="TestIE_OnSelectedIndexChanged" AutoPostBack="True">
52.        </telerik:RadComboBox>
53.        <asp:LinkButton runat="server" ID="SaveValues" OnClick="SaveValues_OnClick">Click to Save</asp:LinkButton>
54.        <asp:Label runat="server" ID="SaveButtonResults" />
55.        <telerik:RadGrid runat="server" ID="TestGrid" OnItemCreated="TestGrid_OnItemCreated" OnNeedDataSource="TestGrid_OnNeedDataSource" AllowAutomaticInserts="False" OnInsertCommand="TestGrid_OnInsertCommand" AutoGenerateColumns="False" AutoGenerateDeleteColumn="False" AutoGenerateEditColumn="False" ShowHeader="True" AllowFilteringByColumn="False">
56.             <MasterTableView CssClass="LeftAlign" DataKeyNames="Id" GridLines="None" CommandItemDisplay="Top" EditMode="PopUp">
57.                  <Columns>
58.                      <telerik:GridTemplateColumn DefaultInsertValue="" UniqueName="MyBasicEntry.Description" HeaderText="Description" DataField="MyBasicEntry.Description"  ItemStyle-Wrap="False">
59.                            <ItemTemplate>
60.                                <asp:Label ID="DescriptionLabel" runat="server" Text='<%# Eval("Description")  %>'
61.                                    ToolTip='<%# Eval("Description") %>' />
62.                            </ItemTemplate>
63.                            <EditItemTemplate>
64.                                <telerik:RadComboBox runat="server" ID="TestIEInsideGrid"
65.                                    EmptyMessage="Pick one from the list" OnSelectedIndexChanged="TestIEInsideGrid_OnSelectedIndexChanged" AutoPostBack="True"
66.                                    CausesValidation="False" DropDownAutoWidth="Enabled" Width="200px" />
67.                            </EditItemTemplate>
68.                        </telerik:GridTemplateColumn>
69.                  </Columns>
70.                  <EditFormSettings ColumnNumber="2" InsertCaption="Εισαγωγή Αποσπάσεων" EditColumn-ButtonType="ImageButton"
71.                        PopUpSettings-Modal="true" PopUpSettings-Width="950" PopUpSettings-Height="320">
72.                        <FormTableItemStyle Wrap="False" />
73.                        <FormMainTableStyle CellPadding="4" Width="100%" />
74.                        <FormTableStyle CellPadding="4" CellSpacing="0" CssClass="LeftAlign" />
75.                        <FormTableAlternatingItemStyle Wrap="False" />
76.                        <FormTableButtonRowStyle HorizontalAlign="Right" />
77.                    </EditFormSettings>
78.             </MasterTableView>
79.        </telerik:RadGrid>
80.    </div>
81.    </form>
82.</body>
83.</html>


file: Default.aspx.designer.cs

01.//------------------------------------------------------------------------------
02.// <auto-generated>
03.//     This code was generated by a tool.
04.//
05.//     Changes to this file may cause incorrect behavior and will be lost if
06.//     the code is regenerated.
07.// </auto-generated>
08.//------------------------------------------------------------------------------
09.
10.
11.
12.public partial class Default {
13.    
14.    /// <summary>
15.    /// RadStyleSheetManager1 control.
16.    /// </summary>
17.    /// <remarks>
18.    /// Auto-generated field.
19.    /// To modify move field declaration from designer file to code-behind file.
20.    /// </remarks>
21.    protected global::Telerik.Web.UI.RadStyleSheetManager RadStyleSheetManager1;
22.    
23.    /// <summary>
24.    /// form1 control.
25.    /// </summary>
26.    /// <remarks>
27.    /// Auto-generated field.
28.    /// To modify move field declaration from designer file to code-behind file.
29.    /// </remarks>
30.    protected global::System.Web.UI.HtmlControls.HtmlForm form1;
31.    
32.    /// <summary>
33.    /// RadScriptManager1 control.
34.    /// </summary>
35.    /// <remarks>
36.    /// Auto-generated field.
37.    /// To modify move field declaration from designer file to code-behind file.
38.    /// </remarks>
39.    protected global::Telerik.Web.UI.RadScriptManager RadScriptManager1;
40.    
41.    /// <summary>
42.    /// RadAjaxManager1 control.
43.    /// </summary>
44.    /// <remarks>
45.    /// Auto-generated field.
46.    /// To modify move field declaration from designer file to code-behind file.
47.    /// </remarks>
48.    protected global::Telerik.Web.UI.RadAjaxManager RadAjaxManager1;
49.    
50.    /// <summary>
51.    /// TestIE control.
52.    /// </summary>
53.    /// <remarks>
54.    /// Auto-generated field.
55.    /// To modify move field declaration from designer file to code-behind file.
56.    /// </remarks>
57.    protected global::Telerik.Web.UI.RadComboBox TestIE;
58.    
59.    /// <summary>
60.    /// SaveValues control.
61.    /// </summary>
62.    /// <remarks>
63.    /// Auto-generated field.
64.    /// To modify move field declaration from designer file to code-behind file.
65.    /// </remarks>
66.    protected global::System.Web.UI.WebControls.LinkButton SaveValues;
67.    
68.    /// <summary>
69.    /// SaveButtonResults control.
70.    /// </summary>
71.    /// <remarks>
72.    /// Auto-generated field.
73.    /// To modify move field declaration from designer file to code-behind file.
74.    /// </remarks>
75.    protected global::System.Web.UI.WebControls.Label SaveButtonResults;
76.    
77.    /// <summary>
78.    /// TestGrid control.
79.    /// </summary>
80.    /// <remarks>
81.    /// Auto-generated field.
82.    /// To modify move field declaration from designer file to code-behind file.
83.    /// </remarks>
84.    protected global::Telerik.Web.UI.RadGrid TestGrid;
85.}


file: Default.aspx.cs
001.using System;
002.using System.Collections.Generic;
003.using System.Web;
004.using System.Web.UI;
005.using System.Web.UI.WebControls;
006.
007.using System.Data;
008.using System.Configuration;
009.using System.Web.Security;
010.using System.Web.UI.WebControls.WebParts;
011.using System.Web.UI.HtmlControls;
012.using Telerik.Web.UI;
013.[Serializable]
014.public class MyBasicEntry
015.{
016.    public int Id { get; set; }
017.    public string Description { get; set; }
018.    public MyBasicEntry(int Id, string Description)
019.    {
020.        this.Description = Description;
021.        this.Id = Id;
022.    }
023.}
024.
025.public partial class Default : System.Web.UI.Page
026.{
027.    private List<MyBasicEntry> GridSource { get { return (List<MyBasicEntry>)ViewState["GridSource"]; } set { ViewState["GridSource"] = value; } }
028.    private List<MyBasicEntry> myBasicEntryList { get { return (List<MyBasicEntry>)ViewState["myBasicEntryList"]; } set { ViewState["myBasicEntryList"] = value; } }
029.    protected void Page_Load(object sender, EventArgs e)
030.    {
031.
032.        if(!Page.IsPostBack)
033.        {
034.            GridSource = new List<MyBasicEntry>();
035.            myBasicEntryList = new List<MyBasicEntry>();
036.            myBasicEntryList.Add(new MyBasicEntry(1, "Heißen"));
037.            //myBasicEntryList.Add(new MyBasicEntry(1, "ΚΑΝΑΔΑΣ"));
038.            //myBasicEntryList.Add(new MyBasicEntry(1, "Germany"));
039.            myBasicEntryList.Add(new MyBasicEntry(2, "München"));
040.            myBasicEntryList.Add(new MyBasicEntry(3, "München1"));
041.            myBasicEntryList.Add(new MyBasicEntry(3, "München 1"));
042.            myBasicEntryList.Add(new MyBasicEntry(4, "Περισσότερα Ελληνικά"));
043.            TestIE.DataSource = myBasicEntryList;
044.            TestIE.DataValueField = "Id";
045.            TestIE.DataTextField = "Description";
046.            TestIE.DataBind();
047.        }
048.        
049.    }
050.
051.    protected void TestIE_OnSelectedIndexChanged(object Sender, RadComboBoxSelectedIndexChangedEventArgs E)
052.    {
053.        var selectedIndex = (Sender as RadComboBox).SelectedIndex;
054.        var selectedItem = (Sender as RadComboBox).SelectedItem;
055.        var selectedValue = (Sender as RadComboBox).SelectedValue;
056.        var oldValue = E.OldValue;
057.        var newValue = E.Value;
058.        var oldText = E.OldText;
059.        var newText = E.Text;
060.    }
061.    protected void TestIEInsideGrid_OnSelectedIndexChanged(object Sender, RadComboBoxSelectedIndexChangedEventArgs E)
062.    {
063.        var selectedIndex = (Sender as RadComboBox).SelectedIndex;
064.        var selectedItem = (Sender as RadComboBox).SelectedItem;
065.        var selectedValue = (Sender as RadComboBox).SelectedValue;
066.        var oldValue = E.OldValue;
067.        var newValue = E.Value;
068.        var oldText = E.OldText;
069.        var newText = E.Text;
070.    }
071.    protected void SaveValues_OnClick(object Sender, EventArgs E)
072.    {
073.        var selectedIndex = TestIE.SelectedIndex;
074.        var selectedItem = TestIE.SelectedItem;
075.        var selectedValue = TestIE.SelectedValue;
076.        SaveButtonResults.Text = "You have selected: " + (TestIE.SelectedIndex == -1 ? "nothing" : selectedItem.Text + " at index " + int.Parse(selectedValue));
077.    }
078.
079.    protected void TestGrid_OnInsertCommand(object Sender, GridCommandEventArgs E)
080.    {
081.        var TestIEInsideGrid = (RadComboBox)E.Item.FindControl("TestIEInsideGrid");
082.        var selectedIndex = TestIEInsideGrid.SelectedIndex;
083.        var selectedItem = TestIEInsideGrid.SelectedItem;
084.        var selectedValue = TestIEInsideGrid.SelectedValue;
085.        GridSource.Add(new MyBasicEntry(int.Parse(selectedValue),selectedItem.Text));
086.    }
087.
088.    protected void TestGrid_OnItemCreated(object Sender, GridItemEventArgs E)
089.    {
090.        if ((E.Item is GridEditFormItem) && E.Item.IsInEditMode)
091.        {
092.            var TestIEInsideGrid = (RadComboBox)E.Item.FindControl("TestIEInsideGrid");
093.            TestIEInsideGrid.DataSource = myBasicEntryList;
094.            TestIEInsideGrid.DataValueField = "Id";
095.            TestIEInsideGrid.DataTextField = "Description";
096.            TestIEInsideGrid.DataBind();
097.        }
098.    }
099.
100.    protected void TestGrid_OnNeedDataSource(object Sender, GridNeedDataSourceEventArgs E)
101.    {
102.        TestGrid.DataSource = GridSource;
103.    }
104.}


file: Web.config

01.<?xml version="1.0"?>
02.<configuration>
03.  <appSettings>
04.    <add key="Telerik.Skin" value="Black"/>
05.    <add key="Telerik.ScriptManager.TelerikCdn" value="Disabled"/>
06.    <add key="Telerik.StyleSheetManager.TelerikCdn" value="Disabled"/>
07.  </appSettings>
08.  <system.web>
09.    <compilation debug="true" targetFramework="4.0"/>
10.    <pages>
11.      <controls>
12.        <add tagPrefix="telerik" namespace="Telerik.Web.UI" assembly="Telerik.Web.UI"/>
13.      </controls>
14.    </pages>
15.    <httpHandlers>
16.      <add path="ChartImage.axd" type="Telerik.Web.UI.ChartHttpHandler" verb="*" validate="false"/>
17.      <add path="Telerik.Web.UI.SpellCheckHandler.axd" type="Telerik.Web.UI.SpellCheckHandler" verb="*" validate="false"/>
18.      <add path="Telerik.Web.UI.DialogHandler.aspx" type="Telerik.Web.UI.DialogHandler" verb="*" validate="false"/>
19.      <add path="Telerik.RadUploadProgressHandler.ashx" type="Telerik.Web.UI.RadUploadProgressHandler" verb="*" validate="false"/>
20.      <add path="Telerik.Web.UI.WebResource.axd" type="Telerik.Web.UI.WebResource" verb="*" validate="false"/>
21.    </httpHandlers>
22.    <httpModules>
23.      <add name="RadUploadModule" type="Telerik.Web.UI.RadUploadHttpModule"/>
24.      <add name="RadCompression" type="Telerik.Web.UI.RadCompression"/>
25.    </httpModules>
26.  </system.web>
27.  <system.webServer>
28.    <validation validateIntegratedModeConfiguration="false"/>
29.    <modules runAllManagedModulesForAllRequests="true">
30.      <remove name="RadUploadModule"/>
31.      <add name="RadUploadModule" type="Telerik.Web.UI.RadUploadHttpModule" preCondition="integratedMode"/>
32.      <remove name="RadCompression"/>
33.      <add name="RadCompression" type="Telerik.Web.UI.RadCompression" preCondition="integratedMode"/>
34.    </modules>
35.    <handlers>
36.      <remove name="ChartImage_axd"/>
37.      <add name="ChartImage_axd" path="ChartImage.axd" type="Telerik.Web.UI.ChartHttpHandler" verb="*" preCondition="integratedMode"/>
38.      <remove name="Telerik_Web_UI_SpellCheckHandler_axd"/>
39.      <add name="Telerik_Web_UI_SpellCheckHandler_axd" path="Telerik.Web.UI.SpellCheckHandler.axd" type="Telerik.Web.UI.SpellCheckHandler" verb="*" preCondition="integratedMode"/>
40.      <remove name="Telerik_Web_UI_DialogHandler_aspx"/>
41.      <add name="Telerik_Web_UI_DialogHandler_aspx" path="Telerik.Web.UI.DialogHandler.aspx" type="Telerik.Web.UI.DialogHandler" verb="*" preCondition="integratedMode"/>
42.      <remove name="Telerik_RadUploadProgressHandler_ashx"/>
43.      <add name="Telerik_RadUploadProgressHandler_ashx" path="Telerik.RadUploadProgressHandler.ashx" type="Telerik.Web.UI.RadUploadProgressHandler" verb="*" preCondition="integratedMode"/>
44.      <remove name="Telerik_Web_UI_WebResource_axd"/>
45.      <add name="Telerik_Web_UI_WebResource_axd" path="Telerik.Web.UI.WebResource.axd" type="Telerik.Web.UI.WebResource" verb="*" preCondition="integratedMode"/>
46.    </handlers>
47.  </system.webServer>
48.</configuration>


If you remove the EmptyMessage property or you set it to "" everything goes back to normal. 
Also if you comment out line line 36 and you uncomment out line 38 so that first Items text is English then every goes back to normal as well. So I think it should be an issue of the EmptyMessage property and the Encoding of the Items text in the JavaScript you are using.

Thank you for your time and I remain to your disposal for any additional info you may need

4 Answers, 1 is accepted

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0
Nencho
Telerik team
answered on 28 Feb 2014, 09:40 AM
Hello Yannis,

I tried to replicate the described issue, following your detailed explanation and using the specified version, but to no avail. Since I am unable to replicate your DataBase environment, I tested the behavior locally with some custom data, using your implementation. Here is a video, demonstrating the behavior at my end. In addition, I tried adding the items from code-behind, but I am still unable to replicate the issue. Please correct me if I am missing something.

Regards,
Nencho
Telerik
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0
Yiannis
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answered on 01 Mar 2014, 02:08 PM
Hello Nencho,

I've noticed a couple of thinngs in your video that are different. First was that you're using Dev Studio 12 where I was using Dev Studio 10. Tried my project in Dev Studio 12 and bug is still there. 
Second was that your are not using my project, you only copy parts of my code. It's a one page Web Project and all the files web.config and default (aspx, aspx.cs and aspx.cs.design) are in my first post. To make things easier for you, I've uploaded my sample project [here] so that everyone can download and see for themselfs. I will also try to make a video and upload it as well.

Kind regards

Yiannis
0
Yiannis
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answered on 01 Mar 2014, 02:58 PM
Here is the video that I promised
Notice that everything works great with Chrome but when I switch to IE11 SelectedIndexChanged fires on update buttons clicked (outside and inside RadGrid) and this only happens when the first choise is selected. When I select any other choise everything works great.
Then I change whe Default.aspx and I set EmptyMessage property in both RadComboBoxs to "" and everything works great, no bug. Last I restore EmptyMessage property value to "Pick one from the list" and this time I set the first option in both RadComboBoxs to have an English text and also everything works great with no bug. So contition of the bug is EmptyMessage property set and first Item of the RadComboBox has no English text.

Hope this helps identify the bug.

Kind regards

Yiannis


0
Nencho
Telerik team
answered on 05 Mar 2014, 01:42 PM
Hello Yiannis,

Thank you for the detailed information. I was able to replicate the issue locally, using the provided sample project and indeed an issue exist. However, this problem is fixed with our recent official release - Q1 2014. Here is a video, demonstrating the behavior with the referenced versions. Please upgrade to the mentioned version, in order to get advantage of the fix.

Lastly, for further reference I would kindly like to ask you, not to attached files, where our official dll are exposed, due to a security reasons.

Regards,
Nencho
Telerik

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