Step1:-do this in your your usercontrol for fired textchange event
Public Delegate Sub TextChangedHandler(ByVal sender As Object, ByVal e As System.EventArgs)
Public Event TxtChanged As TextChangedHandler
Protected Sub TextDatepicker_TextChanged(sender As Object, e As EventArgs) Handles TextDatepicker.TextChanged
RaiseEvent TxtChanged(sender, e)
step2:- do this is on your code page
Public Sub dtJSCalendarControlLoc_TxtChanged(sender As Object, e As EventArgs) Handles dtJSCalendarControlShift.TxtChanged
Try
Catch ex As Exception
End Try
End Sub