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Date maskedEdit with watermark doesn't update on invalid date

Posted By:      Posted Date: September 19, 2010    Points: 0   Category :ASP.Net

I'm trying to use the TextBoxWatermarkExtender with MaskedEditExtender/Validator and have found a bug (I think).

In the textbox I enter an invalid date such as 55-55-5555 and exits the textbox. I would then expect the watermark to be shown, but it doesn't. Instead the prompchar is shown (like __-__-____).

If I simply give focus to the textbox and then another control, the watermark is shown.

Is there a workaround such as manually force the TextBoxWatermarkExtender to update.

I'm not the best with javascript, I tried to call focus() and blur() on the textbox in the textbox's onBlur event using window.setTimeout. This works in Firefox, but not IE8, also there has to be a better way I think :-)

            <asp:TextBox ID="TextBox5" runat="server" MaxLength="1" onBlur=""/>
            <asp:ImageButton ID="ImgBntCalc" runat="server" ImageUrl="~/images/Calendar_scheduleHS.png" CausesValidation="False" />

        <ajaxToolkit:TextBoxWatermarkExtender ID="TBWE2" run

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