>>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.

Yes using StringReader overload resolves it.

That is weird. My intellisense is showing more than file name, namely 8 overloads. Here is what I get under .Net 2.0-3.5:

ds.ReadXml(string fileName)
ds.ReadXml(System.IO.Stream stream)
ds.ReadXml(System.IO.TextReader reader)
ds.ReadXml(System.Xml.XmlReader reader)

ds.ReadXml(string fileName,System.Data.XmlReadMode mode)
ds.ReadXml(System.IO.Stream stream,System.Data.XmlReadMode mode)
ds.ReadXml(System.IO.TextReader reader,System.Data.XmlReadMode mode)
ds.ReadXml(System.Xml.XmlReader reader,System.Data.XmlReadMode mode)

I use C# but I don't think VB would only show one overload. Otherwise it would be a definite reason for not using VB:)

PS: Just tried with VB. You are right, although it shows that there are 8 overloads the intellisense in VB sucks, you can't navigate overloads easily.
Cetin