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Microsoft Edge JavaScript Error

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DatePicker

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dov765 asked on 29 May 2019, 12:10 PM

captureb987c672d6714b3fa4493f6b769eba7e.jpg

RadDatePicker inside UpdatePanel in Microsoft Edge browser throws JavaScript error when doing a post-back (see attached image).

The error: "Unable to get property 'length' of undefined or null reference".

Any ideas how to fix this, or a work-around?

Microsoft Edge 44.17763.1.0

Telerik Controls: Telerik.Web.UI, Version=2019.1.409.45

My Code:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="EdgeDatePickerIssue.Default" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

<title>Default</title>

</head>

<body>

<form id="form1" runat="server">

<asp:ScriptManager ID="ScriptManager" runat="server" ScriptMode="Release" />

<asp:UpdatePanel runat="server" ID="upPanel">

<ContentTemplate>

<label>Select Date:</label>

<telerik:RadDatePicker ID="dpStartDate" runat="server"

MaxDate="2020-01-01" MinDate="2000-01-01"

AutoPostBack="true" OnSelectedDateChanged="dpStartDate_SelectedDateChanged" />

<telerik:RadButton ID="btnSave" runat="server" Text="Save" OnClick="btnSave_Click" />

</ContentTemplate>

</asp:UpdatePanel>

</form>

</body>

</html>

5 Answers, 1 is accepted

Accepted

answered on 31 May 2019, 09:46 AM

Hi Dov,

Thank you for reporting this issue.

It is fixed in the official R2 2019 release 2019.2.514. Can you please test it and let me know if you still experience it?

If for some reason the issue still persists after the upgrade, set the RenderMode property of RadDatePicker to Lightweight and test again: