RadComboBox does not work correctly in legacy Edge

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Request a Feature Report a Bug

Declined

Last Updated: 08 Apr 2020 14:07 by ADMIN

Mark

Created on: 05 Feb 2020 15:16

Category: ComboBox

Type: Bug Report

RadComboBox does not work correctly in legacy Edge

Browser:

Microsoft Edge 44.18362.449.0

Telerik Control:

RadCombobox

Teleri Version: Version=2017.3.913.45,

Issue:

When a item is selected and a postback is occured, the SelectedValue returns an empty string.

Expected behavior:

The correct SelectedValue should be return.

Thing that have been tried so far:

1: upgrade the telerik to the latest version (2020.114) ---> issue persists

2: set autopostback to "true" problem solved

3: use other browsers (chrome, FireFox, new Version 79.0.309.68 ) issue disappears

Sample code:

1: aspx

<telerik:radcombobox

id="ddlSupplier"

runat="server"

skin="Material"

rendermode="Lightweight"

cssclass="materializeit"

enableloadondemand="true"

inputcssclass="browser-default"

width="100%"

filter="Contains"

highlighttemplateditems="true"

showmoreresultsbox="false"

onitemsrequested="ddlSupplier_ItemsRequested" autopostback="false">

</telerik:radcombobox>

2: code behind

protected void Page_Load(object sender, EventArgs e)

{

}

protected void saveIssue_Click(object sender, EventArgs e)

{

}

protected void ddlSupplier_ItemsRequested(object sender, Telerik.Web.UI.RadComboBoxItemsRequestedEventArgs e)

{

RadComboBoxItem li = new RadComboBoxItem("Alan Jones (Brunel Systems Pty Ltd, test site)", "123");

ddlSupplier.Items.Add(li);

li = new RadComboBoxItem("Jackie Chiu (Optimum Construction, Optimum Construction (Sydney)) ", "23" );

ddlSupplier.Items.Add(li);

li = new RadComboBoxItem("Erik Baker (Optimum Construction, Optimum Construction (Sydney))", "2323");

ddlSupplier.Items.Add(li);

}

protected void b_Click(object sender, EventArgs e)

{

var a = ddlSupplier.SelectedValue; // most of the time returns "" for Edge

}

2 comments

ADMIN

Rumen

Posted on: 08 Apr 2020 14:07

Hi Folks,

I changed the status to Declined since we support only the current version of Microsoft Edge (Chromium) - see the Browser support page.

If the legacy Edge is important for you, please use the provided workaround.

Regards,
Rumen
Progress Telerik

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ADMIN

Peter Milchev

Posted on: 05 Feb 2020 15:24

Hello,

As a temporary workaround, the following handler can be used:

<telerik:RadComboBox
    ID="ddlSupplier"
    runat="server"
    Skin="Material"
    OnClientItemsRequested="OnClientItemsRequested"
    RenderMode="Lightweight"
    CssClass="materializeit"
    EnableLoadOnDemand="true"
    InputCssClass="browser-default"
    Width="100%"
    Filter="Contains"
    HighlightTemplatedItems="true"
    ShowMoreResultsBox="false"
    OnItemsRequested="ddlSupplier_ItemsRequested" AutoPostBack="false">
</telerik:RadComboBox>
<script>
    function OnClientItemsRequested(sender, args) {
        // temporary workaround for https://feedback.telerik.com/aspnet-ajax/1452415-radcombobox-does-not-work-correctly-in-legacy-edge
        if (Telerik.Web.Browser.edge && !Telerik.Web.Browser.chrome) {
            sender.get_items().forEach(function (it) {
                // the get_text() needs to be called, although it does nothing special
                it.get_text();
                //console.log(it.get_text());
            });
        }
    }
</script>

Regards,
Peter Milchev
Progress Telerik

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