Error in use from combobox of ajaxcontroltoolkit

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Hello

i use from ajaxcontroltoolkit for a combobox.
when i run mywebsite, and whants ro type a charcter in combobox, i would be faced with below error:

JavaScript runtime error: Unable to get property 'createRange' of undefined or null reference

why?

Thanks

What I have tried:

I can't do any things.

help

Posted 19-Nov-18 3:39am

Member 13522501

Updated 19-Nov-18 8:11am

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Vincent Maverick Durano · Answer 1 · 2018-11-19T08:12:00

Solution 2

Quote:
JavaScript runtime error: Unable to get property 'createRange' of undefined or null reference

why?

Give this short discussion a read: https://stackoverflow.com/questions/25388133/combobox-throws-an-errorunable-to-get-property-createrange-of-undefined-or-nu

Posted 19-Nov-18 8:12am

Vincent Maverick Durano

Slacker007 · Answer 2 · 2018-11-19T03:44:00

Solution 1

You are not getting the control Id correctly, at least that is what I think you are doing.

i.e. document.getElementById(<< control name here >>)

Posted 19-Nov-18 3:44am

Slacker007

Comments

Member 13522501 19-Nov-18 10:07am

hello and thanks for your attention to me.
when i drag combobox on the page, the below code is make in design mode:
<asp:ComboBox ID="myComboBox1" runat="server">
<asp:listitem>a
<asp:listitem>b
<asp:listitem>c
<asp:listitem>