Do you know what a DTD is, and why do you need to use one? If you have the answers to these questions, you should know what to do. "We make a living by what we get, we make a life by what we give." --Winston Churchill

I don't believe C# supports DTD files. Even if it did, it's certain the dataset class does not know how to mangle the data it has to try to fit to a DTD. You're out of luck. You can validate XML against a schema in C#, but you can't give C# a schema and some XML and expect it to reformat it for you. Your best bet is to look at the XML that comes out of your dataset, and write an xslt sheet that modifies it to fit your schema. Christian Graus Driven to the arms of OSX by Vista. "I am new to programming world. I have been learning c# for about past four weeks. I am quite acquainted with the fundamentals of c#. Now I have to work on a project which converts given flat files to XML using the XML serialization method" - SK64 ( but the forums have stuff like this posted every day )

Create a Setup Project. Henry Minute Do not read medical books! You could die of a misprint. - Mark Twain Girl: (staring) "Why do you need an icy cucumber?" “I want to report a fraud. The government is lying to us all.”

Please show the code that is broken. We are not mind-readers. *Developer Day Scotland - Free community conference Delegate Registration Open

What's the betting he didn't put a setter in his code. Muppet! I've given you a 5 as well. Henry Minute Do not read medical books! You could die of a misprint. - Mark Twain Girl: (staring) "Why do you need an icy cucumber?" “I want to report a fraud. The government is lying to us all.”

Besides, the .Net Framework was written in Javascript, not C#. It just wouldn't be right... "A Journey of a Thousand Rest Stops Begins with a Single Movement"