Datagrid Itemtemplate date US and Europe format

[reddymade1]

I am looking for a condition under itemtemplate column to send the date format:
I want to pass this"dd/mm/yyyy" or "mm/dd/yyyy" value via
session("datelocale")

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<ItemTemplate>
<%# trim(DataBinder.Eval(Container.DataItem,"eventdate","{0:MM/dd/yyyy}")) %>
</ItemTemplate>

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Thank you very much for the information.