ZipFile in sharepoint not working

Response.Clear();
Response.ContentType = "application/zip";
 
Response.AddHeader("content-disposition", "filename=" + "Test.xlsx");
 
string path = @"C:\ReportsDocs";
 
using (ZipFile zip = new ZipFile())
{                          
 
   zip.AddFile(path + @"\docProps\core.xml", "docProp");
   zip.AddFile(path + @"\docProps\app.xml", "docProp");
   zip.AddFile(path + @"\docProps\thumbnail.wmf", "docProp"); 
                          
   zip.Save(Response.OutputStream);
 

}