RadDateInput MMM yyyy issue

[Chris]

I have searched these forums and haven't found a solution or mention of this yet, but if it's out there, feel free to point me in that direction.

Using Telerik.Web.UI, v.2011.2.915.40, .NET 4, and ASP.NET/C#, in Visual Studio 2010.

I have a RadDateInput and would like to use the MMM yyyy date format, and use mouse keys to change the date.  This is the way the RadDateInput is configured:

<telerik:RadDateInput runat="server" ID="rdiDate" DateFormat="MMM yyyy" DisplayDateFormat="MMM yyyy">
   <IncrementSettings InterceptMouseWheel="false" InterceptArrowKeys="true" />
</telerik:RadDateInput>

However, on dates such as Sept. 30, 2011 when the day number (30th) is greater than the days in another month (for example, February 2011 only goes up to 28 days) then you can't use the mouse keys to change to or past that month.  I have tried using the server side OnTextChanged for the RadDateInput to manually set the day to the 1st of the month at that time, but that didn't work.  Setting an initial value in the RadDateInput using the current date and changing the day to the 1st also did not work for me.  I've also tried using javascript on the client OnValueChanging event to re-enter the value with the day of 01, but that didn't work either.  The javascript solution I tried:

function changeDate(sender, args) {
    var tbVal = sender.get_textBoxValue();
    if (!(document.getElementById('<%= hdnDate.ClientID %>').value == tbVal)) {
        var month = tbVal.substr(0, 3);
        var year = tbVal.substr(4, 4);
        var newDate = new Date(Date.parse(month + " 01, " + year));
        document.getElementById('<%= hdnDate.ClientID %>').value = month + " " + year;
        window.setTimeout(function () { sender.set_selectedDate(newDate); }, 1);
    }
}

<telerik:RadDateInput runat="server" ID="rdiDate" DateFormat="MMM yyyy" DisplayDateFormat="MMM yyyy">
     <ClientEvents OnValueChanging="changeDate" />
     <IncrementSettings InterceptMouseWheel="false" InterceptArrowKeys="true" />
</telerik:RadDateInput>
<input runat="server" type="hidden" value="" id="hdnDate" />

Is there something I'm missing? or is this an issue with the RadDateInput control itself?

[Vasil]

Hello Chris,

It seems to be a bug in the DateInput. I have logged this and we will fix this soon. I believe you are the first one who report this issue. Thank you for the detailed explanations and for sharing your discoveries, I am updating your Telerik Points.
Currently there is no workaround for the problem, but I will write here if I got something out.

All the best,
Vasil
the Telerik team

[Chris]

Thanks for the response

If it helps anyone else, currently what we are doing is using the DateFormat="MMM 01 yyyy" and DisplayDateFormat="MMM yyyy".  Not ideal, but it does get around the bug.