Programmatically read from library

I have a document library named "xsl library" with a bunch of xsl's... and I need to read a file (anyone one) from there so I can use it transform a xml that renders a we开发者_如何学JAVAbpart... the layout out of a webpart is determined by the xsl... how can I do it?

Notes: Enviroment -> Sharepoint 2007

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So it looks like you need some server side code:

SPFile xslFile = SPContext.Current.Web.GetFile("/myWeb/myXlsLibrary/myXsl.xsl"); 
Stream xslStream = xslFile.OpenBinaryStream(); 

Then you code similar to one provided by Vlad above to make the transformation.

See MSDN for more info on functions used - http://msdn.microsoft.com/en-us/library/microsoft.sharepoint.spweb.getfile.aspx , http://msdn.microsoft.com/en-us/library/microsoft.sharepoint.spfile.openbinarystream.aspx.

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XslCompiledTransform proc = new XslCompiledTransform();

proc.Load(XmlReader.Create(new StringReader(stringWithXsltStylesheetCode)));

XmlDocument result = new XmlDocument();
using (XmlWriter xw = result.CreateNavigator().AppendChild())
{
   proc.Transform(inputXmlDocument, null, xw);
   xw.Close();
}