Hi,
I think you did the syntatic mistake while assigning the parameter @AuditReport to the string path,
Try this one,
string path=Server.MapPath(@AuditReport);
The following code returns the file path for the root of your Web site,
String rootPath = Server.MapPath("~");
Ref:
http://msdn.microsoft.com/en-us/library/ms178116.aspx#Y3188[
^]
Regards,
Blusathish