Export data to Excel file with ASP.NET MVC 4 C# is rendering into view -

i having trouble exporting data excel. following seems render gridview view, instead of prompting user open excel, have installed on machine.

 public actionresult exporttoexcel() {                 var products = this.repository.products.tolist();      var grid = new gridview();     grid.datasource = p in products                       select new                       {                           id = p.id,                           name = p.name                       };     grid.databind();      response.clearcontent();     response.buffer = true;     response.addheader("content-disposition", "attachment; filename=myexcelfile.xls");     response.contenttype = "application/ms-excel";      response.charset = "";     stringwriter sw = new stringwriter();     htmltextwriter htw = new htmltextwriter(sw);      grid.rendercontrol(htw);      response.output.write(sw.tostring());     response.flush();     response.end();      return view("myview");  } 

what doing wrong?

i have tried code , works fine. file being created without problem, code used (it's code, changed datasource testing):

    public actionresult exporttoexcel()     {         var products = new system.data.datatable("teste");         products.columns.add("col1", typeof(int));         products.columns.add("col2", typeof(string));          products.rows.add(1, "product 1");         products.rows.add(2, "product 2");         products.rows.add(3, "product 3");         products.rows.add(4, "product 4");         products.rows.add(5, "product 5");         products.rows.add(6, "product 6");         products.rows.add(7, "product 7");           var grid = new gridview();         grid.datasource = products;         grid.databind();          response.clearcontent();         response.buffer = true;         response.addheader("content-disposition", "attachment; filename=myexcelfile.xls");         response.contenttype = "application/ms-excel";          response.charset = "";         stringwriter sw = new stringwriter();         htmltextwriter htw = new htmltextwriter(sw);          grid.rendercontrol(htw);          response.output.write(sw.tostring());         response.flush();         response.end();          return view("myview");     }