How to set LocaleId for DateTimeControl on workflow 2010 initiation form

Question

I am using a workflow initiation form to request a startdate and  expirationdate as initation parameters from the user that starts the workflow. The SharePoint sitecollection is in dutch and so my user is expecting dutch culture settings for the date
format. 
The workflow initiation form somehow shows a english date format.
I have tried to set the LocaleId property on every SharePoint:DateTimeControl in the aspx form by using SharePoint designer. This worked for the client side datepicker, but the selected value was no longer stored in the workflow param.
I also tried setting the regional settings for application and sitecollection as this was my first though for a possible solution. Unfortunately this does not make a difference. In a list column I see this setting is applied succesfull. For example: I'm using
a task list the shows me the right date format matching the regional setting. Today I did several tests with chinese, german, english and dutch settings. All are applied and showing on correct datepickers in
the tasklist, but none are showing correct datepicker on the initiation form. (List and Site workflows) 
I am currently testing on a SharePoint 2013 Foundation Farm with Dutch Language Pack and CU December 2014 installed. I am using SharePoint 2010 workflows and a dutch version of SharePoint designer.
I hope someone can help me! 

Answer 1

Hi,
I tested the same scenario per your post in my environment, and I got the same results as got.
As a workaround, I recommend to dynamically change the date format in the workflow initiation form page and display the value in a new input box.
Below is the code example, and I hided the original input box for the date field and display with a new input box, then display the date value with needed format in the new input box.
<script src="http://code.jquery.com/jquery-1.10.2.min.js" type="text/javascript"></script>
<script type="text/javascript">
$(document).ready(function () {
$(".ms-input").blur(function(){
var value=$(".ms-input").val();
//change the value of the date to be the right format here
$(".ms-input").hide();
$(".ms-input").after("<div><input name='date' type='text'></div>");
//display the date value which has been changed with the needed format in the new input box
$("input[name='date']").val(value);
</script>
Thanks,
Victoria
Forum Support
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Victoria Xia
TechNet Community Support