>What do you mean? It doesn't need a file to be created on disk. Do you mean persisting the DataSet? Then you would need to use WriteXml(). For example:
>
>

string s = @" ... XML here ...";
>DataSet ds = new DataSet();
>ds.ReadXml(new StringReader(s));

If you intellisense it, you will see that it only shows the parameter as a file name. However, there is an overload in that method. Using it resolves the issue.