处理XMLDOM的问题
我想对以下具有.xml后缀名的文件加密
<?xml version="1.0" encoding="ISO-8859-1"?><FDTTaC xmlns="x-schema:FDTTaCProjectSchema.xml"> <Project>
<ProjectName name="Conformity"/>
<VersionInformation version="1.2.7" timeStamp= "2005-08-11T16:41:21"/>
<Folder name="Common Scripts">
<File name="CommonSequences.XML"/>
<File name="CommonSteps.XML"/>
<File name="CommonStepsActiveX.XML"/>
<File name="CommonStepsChannel.XML"/>
<File name="CommonStepsCommunication.XML"/>
<File name="CommonStepsIDtm.XML"/>
<File name="ContainerSteps.XML"/>
<File name="TransFormSteps.XML"/>
</Folder>
<Folder name="Common XML documents">
<File name="devicetype_wrong.XML"/>
<File name="functionID_wrong.XML"/>
<File name="userinformation.XML"/>
<File name="userinformation_maintenance.XML"/>
<File name="userinformation_observer.XML"/>
<File name="userinformation_operator.XML"/>
请问在C#中怎样在这个DOM中检测XML。