从

static void Main()

到

static void Main(string [] args)

并检查arg[0]参数值.

and the check the arg[0] parameter value.

http://msdn.microsoft.com/en-us/library/system.io.filesystemwatcher.aspx [

http://msdn.microsoft.com/en-us/library/system.io.filesystemwatcher.aspx[^] could help you out.

尝试此链接
C#FileAssociation类 [

try this link
C# FileAssociation Class[^]