How to separate a DataTable by a column and store it for later use

DataTable (already sorted by Ee):

Title           EventDate                   EndDate 
Testing 1       3/23/2016 11:00:00 AM       3/23/2016 12:00:00 PM
Testing 2       3/23/2016 5:00:00 PM        3/23/2016 6:00:00 PM
Testing 9       3/24/2016 4:00:00 PM        3/24/2016 5:00:00 PM
Testing 5       3/29/2016 11:00:00 AM       3/29/2016 12:00:00 PM
Testing 6       3/29/2016 11:00:00 AM       3/29/2016 12:00:00 PM
Testing 4       3/29/2016 1:00:00 PM        3/29/2016 2:00:00 PM

ASP.net Label:

<asp:Label ID="lDates" runat="server"></asp:Label>

How can I code it so the datatable is displayed in the label like this (It might not be like this, but someway I can separate them by dates and display in different places):

3/23:   Testing 1
        Testing 2

3/24:   Testing 9

3/29:   Testing 5
        Testing 6
        Testing 4