Hi
Every one knows that the issue of backspace and delete key in chrome with masked edit still remain from 2008 mainly for Dot net 3.5
Just use my alternative way to solve the problem.
here we just using " Filtered char " of maked edit and "blur()" of text box.I done this according to my requirement only and I hope it can give a hook for your requirement also
<%@ Register assembly="AjaxControlToolkit" namespace="AjaxControlToolkit" tagprefix="ajax" %>
<asp:TextBox ID="txtDTFrom" runat="server" ToolTip="Select From Date"
Width="75px"
onkeydown="javascript:if(event.keyCode==8||event.keyCode==46){this.value='dd/MM/yyyy';}"
onblur="javascript:if(this.value=='dd/MM/yyyy'){this.value='';}"
></asp:TextBox>
<ajax:textboxwatermarkextender id="WatermarkExtender1" runat="server"
targetcontrolid="txtDTFrom" watermarktext="dd/MM/yyyy">
</ajax:textboxwatermarkextender>
<ajax:calendarextender id="trnCal" runat="server" format="dd/MM/yyyy"
targetcontrolid="txtDTFrom">
</ajax:calendarextender>
<ajax:maskededitextender id="MaskedEditExtender1" runat="server"
Filtered="d,M,y"
mask="NN/NN/NNNN"
masktype="Date" ClearTextOnInvalid="false" messagevalidatortip="true" targetcontrolid="txtDTFrom">
</ajax:maskededitextender>