The type or namespace name err

Question

1.00/5 (2 votes)

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C#

[HttpPost]
       [ValidateAntiForgeryToken]
       public ActionResult Upload(HttpPostedFileBase upload)
       {
           if (ModelState.IsValid)
           {

               if (upload != null && upload.ContentLength > 0)
               {

                   if (upload.FileName.EndsWith(".csv"))
                   {
                       Stream stream = upload.InputStream;
                       DataTable csvTable = new DataTable();
                       using (CsvReader csvReader =
                           new CsvReader(new StreamReader(stream), true))
                       {
                           csvTable.Load(csvReader);
                       }
                       return View(csvTable);
                   }
                   else
                   {
                       ModelState.AddModelError("File", "This file format is not supported");
                       return View();
                   }
               }
               else
               {
                   ModelState.AddModelError("File", "Please Upload Your file");
               }
           }
           return View();
       }

Error:

C#

Error	1	The type or namespace name 'CsvReader' could not be found (are you missing a using directive or an assembly reference?)

so kindly rectify above mentioned code (MVC 4)

What I have tried:

C#

[HttpPost]
       [ValidateAntiForgeryToken]
       public ActionResult Upload(HttpPostedFileBase upload)
       {
           if (ModelState.IsValid)
           {

               if (upload != null && upload.ContentLength > 0)
               {

                   if (upload.FileName.EndsWith(".csv"))
                   {
                       Stream stream = upload.InputStream;
                       DataTable csvTable = new DataTable();
                       using (CsvReader csvReader =
                           new CsvReader(new StreamReader(stream), true))
                       {
                           csvTable.Load(csvReader);
                       }
                       return View(csvTable);
                   }
                   else
                   {
                       ModelState.AddModelError("File", "This file format is not supported");
                       return View();
                   }
               }
               else
               {
                   ModelState.AddModelError("File", "Please Upload Your file");
               }
           }
           return View();
       }

Error:

C#

Error	1	The type or namespace name 'CsvReader' could not be found (are you missing a using directive or an assembly reference?)

so kindly rectify above mentioned code (MVC 4)

Posted 25-Feb-16 1:35am

Member 12219903

Updated 25-Feb-16 1:44am

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Dave Kreskowiak · Answer 1 · 2016-02-25T01:44:00

The class you're trying to use, CsvReader, is not part of the .NET Framework. It has to be in an external .DLL somewhere. You can probably get that from wherever you got the code you copied.

You then have to add a Reference to that .DLL and then import the namespace exposed by that .DLL that contains the CsvReader class.