c# - How to save pdf file by dialog box in MVC -

i want save pdf file generated in path user want example desktop or whatever , have 2 button in same page, first generate report , second save report pdf , 1 me how like box

 pdfptable tablee = new pdfptable(3);             tablee.addcell("id");             tablee.addcell("age");             tablee.addcell("name");             lenthee = db.persions.toarray().length;             persion[] array = new persion[lenthee];             array = db.persions.toarray();             (int = 0; < lenthee; i++)             {                 tablee.addcell(array[i].id.tostring());                 tablee.addcell(array[i].age.tostring());                 tablee.addcell(array[i].name.tostring());             }              document doc = new document(pagesize.a4, 1, 1, 1, 1);              // here want ask user want save file (dialog box)then put path in (path string attribute)              string path = "c:\\users\\se\\desktop\\test.pdf";             pdfwriter wri = pdfwriter.getinstance(doc, new filestream(path, filemode.create));             doc.open();             paragraph s = new paragraph("report");             doc.add(s);             doc.add(tablee);             doc.close();