Hi KK,
Thank you for your patience.
Issue :
if I enable the timer, it will kick in to borther (make it not working) the "Upload Image" box - clear out the file name of "myimage.jpg" just choosen
This is not an issue.The timer will refresh the page in time intervel. So the UploadImageBox also refreshed and file name is cleared. If you placed the rich texteditor inside the content template of update panel, You can solve the issue. The following code snippet is used to achieve this behavior:
$asp:ScriptManager ID="ScriptManager1" runat="server" />
$asp:UpdatePanel ID="UpdatePanel1" runat="server">
$ContentTemplate>
$asp:Timer runat="server" ID="TimeSet" Interval="100" >
$/ContentTemplate>
$ContentTemplate>
$cc1:RichTextEditor ID="RichTextEditor1" runat="server" Height="420" Width="620" />
$/ContentTemplate>
$/asp:UpdatePanel>
Note : Please note that we are used '$' instead of '<'
Please refer the sample in the below link which illustrates the above:
http://websamples.syncfusion.com/samples/Tools.Web/6.1.0.34/71969/71969.zip
Please try running the above sample and let me know if this helps.
Regards,
Vishnu.