How to import data from excel to database using mvc.net?

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Please kindly assist me with trying to fix my import data from excel to a database using Entity Framework along with MVC.

The error i have been getting states that the following code is UNREACHABLE

for (int row = 2; ws.Cells[row, col].Value != null; row++ )

.

So because of this error, whenever I run my code, my FOR code is been skipped.

What I have tried:

public ActionResult Import()
        {
            if (Request.Files.Count > 0)
            {
                var file = Request.Files[0];
                try
                {
                    using (var p = new ExcelPackage(file.InputStream))
                    {
                        ExcelWorksheet ws = p.Workbook.Worksheets[1];
                        int col = 1;

                        //Insert records to database table.
                        EntertainmentEntities entities = new EntertainmentEntities();

                        for (int row = 2; ws.Cells[row, col].Value != null; row++ )
                        {
                            entities.Music.Add(new Music
                            {

                                Artist = ws.Cells[row, 1].Value.ToString(),
                                Song = ws.Cells[row, 2].Value.ToString(),
                                Genre = ws.Cells[row, 3].Value.ToString(),
                                MusicDate = (int)ws.Cells[row, 4].Value
                               

                            });
                            
                            entities.SaveChanges();
                            return View("Index");
                        }


                    }
                }
                catch
                {
                    ViewBag.Message = "Error";
                }

            }
            else
            { }
            return View("Import");
        }

Posted 10-Sep-18 22:41pm

Member 13200081

Updated 11-Sep-18 5:34am

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Comments

ZurdoDev 11-Sep-18 8:07am

Debug the code and find out why. Pretty easy.

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Richard Deeming · Answer 1 · 2018-09-11T05:34:00

for (int row = 2; ws.Cells[row, col].Value != null; row++ )
{
    entities.Music.Add(new Music
    {
        ...
    });
    
    entities.SaveChanges();
    return View("Index");
}

You have a return statement inside your for loop. As a result, the loop will execute once and immediately return.

Move the SaveChanges and return lines outside of the for loop:

C#

for (int row = 2; ws.Cells[row, col].Value != null; row++ )
{
    entities.Music.Add(new Music
    {
        ...
    });
}

entities.SaveChanges();
return View("Index");