>I've recompiled an existing .NET 1.1 application with VS.NET 2005 on .NET 2.0. No compile errors, but at run time I get
>
>

>Cannot perform '>=' operation on System.String and System.DateTime
>The line of code referenced is
>dtNews.DefaultView.RowFilter = "NewsDate >= #" + DateTime.Today.ToString() + "#";
>

>
>NewDate is a field from an XML file as follows:
>
>

><?xml version="1.0" encoding="utf-8" ?>
><News>
><NewsItem>
>    <NewsDate>26/07/2005</NewsDate>
>    <Message>***WebECP will be down tonight from 9pm-10pm for enhancements***</Message>
>  </NewsItem>
>  <NewsItem>
>    <NewsDate>15/10/2005</NewsDate>
>    <Message>Clinical customers can now be given access to a screen which
 lists of all devices in their area currently being inspected or repaired. 
Site WebECP contacts, please contact Evan for implementation details and 
issues.</Message>
>  </NewsItem>
></News>
>

Evan,

The first thing that comes to mind is that the implicit type conversion options are set differently. Check Option Strict in the 2005 project versus 2003. You can also set Option Strict at the top of the source code file.