File Locked after XslCompiledTransform

[mcfly1204]

I have a method that converts an Xml file to HTML using XslCompiledTransform. After the HTML file is created, I pass a variable holding the path and name of the HTML file to another method that is to send the file as an attachment via email.

When the file is attempted to be attached to the message, I am prompted with a message stating that the process cannot access the file, it is being used by another process. Is there a way to release the handle on the file after the XslCompiledTransform?

[mcfly1204]

Solved.

In case someone else runs into this, you should not create the XmlReader and XmlWriter instance within the transform procedure. So,

XslCompiledTransform.Transform(XmlReader.Create(fi lePath), XmlWriter.Create(filePath));

will lock the file. However,

XmlReader reader = XmlReader.Create(filepath);
XmlWriter writer = XmlWriter.Create(filepath);
XslCompiledTransform.Transform(reader, writer);
reader.Close();
writer.Close();

will free up the transformed file.