Question

我正在编写一个使用DocumentFormat.OpenXml 2.5.0库的c＃代码来读取excel文件中的值。 excel有三列。我的程序需要读取三列值并将值存储在List集合中，返回IEnumerable<ShipViewModel>

My View模型基本上包含三个属性。见下面的代码

public class ShipViewModel
{

    public string Column1 { get; set; }
    public string Column2 { get; set; }
    public string Column3 { get; set; }

}

阅读excel文件的逻辑

 public List<ShipViewModel> OpenSpreadsheetDocument(string filepath)
        {

            List<ShipViewModel> model = new List<ShipViewModel>(); 

            // Open a SpreadsheetDocument based on a filepath.
            using (SpreadsheetDocument spreadsheetDocument = SpreadsheetDocument.Open(filepath, false))
            {
                WorkbookPart workbookPart = spreadsheetDocument.WorkbookPart;
                WorksheetPart worksheetPart = workbookPart.WorksheetParts.First();
                SheetData sheetData = worksheetPart.Worksheet.Elements<SheetData>().First();
                string text;
                foreach (Row r in sheetData.Elements<Row>())
                {
                    foreach (Cell c in r.Elements<Cell>())
                    {
                        text = c.CellValue.Text;
                        Console.Write(text + " ");
                    }
                }
            }
        }

我正在考虑填充for循环中的列表。请参阅下面的代码。但是如果你检查上面的循环，Column2和Column3将包含Column1的相同单元格值，这不应该是大小写。单元格的值仅在下一次迭代期间更改。

 ShipViewModel shipViewModel = new ShipViewModel();
                    shipViewModel.Column1  = c.CellValue.Text;
                    shipViewModel.Column2   = c.CellValue.Text;
                    shipViewModel.Column3  = c.CellValue.Text;

                    model.Add(shipViewModel);

Answer 1

我可以向您展示如何将数据从Excel导入数据库，您必须从nuget安装LinqToExcel。这是代码：

[HttpPost]
    public JsonResult UploadExcel(Item items, HttpPostedFileBase FileUpload)
    {

        List<string> data = new List<string>();
        if (FileUpload != null)
        {
            // tdata.ExecuteCommand("truncate table OtherCompanyAssets");  
            if (FileUpload.ContentType == "application/vnd.ms-excel" || FileUpload.ContentType == "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet")
            {


                string filename = FileUpload.FileName;
                string targetpath = Server.MapPath("~/Content/Uploads/Excel/");
                FileUpload.SaveAs(targetpath + filename);
                string pathToExcelFile = targetpath + filename;
                var connectionString = "";
                if (filename.EndsWith(".xls"))
                {
                    connectionString = string.Format("Provider=Microsoft.Jet.OLEDB.4.0; data source={0}; Extended Properties=Excel 8.0;", pathToExcelFile);
                }
                else if (filename.EndsWith(".xlsx"))
                {
                    connectionString = string.Format("Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Extended Properties=\"Excel 12.0 Xml;HDR=YES;IMEX=1\";", pathToExcelFile);
                }

                var adapter = new OleDbDataAdapter("SELECT * FROM [Sheet1$]", connectionString);
                var ds = new DataSet();

                adapter.Fill(ds, "ExcelTable");

                DataTable dtable = ds.Tables["ExcelTable"];

                string sheetName = "Sheet1";

                var excelFile = new ExcelQueryFactory(pathToExcelFile);
                var artistAlbums = from a in excelFile.Worksheet<Item>(sheetName) select a;

                foreach (var a in artistAlbums)
                {
                    try
                    {
                        if (a.Name != "" && a.Description != "" && a.Number != "")
                        {
                            Item TU = new Item();
                            TU.Name = a.Name;
                            TU.Description = a.Description;
                            TU.Number = a.Number;
                            db.Items.Add(TU);

                            db.SaveChanges();



                        }
                        else
                        {
                            data.Add("<ul>");
                            if (a.Name == "" || a.Name == null) data.Add("<li> Name is required</li>");
                            if (a.Description == "" || a.Description == null) data.Add("<li> Description is required</li>");
                            if (a.Number == "" || a.Number == null) data.Add("<li>Number is required</li>");

                            data.Add("</ul>");
                            data.ToArray();
                            return Json(data, JsonRequestBehavior.AllowGet);
                        }
                    }

                    catch (DbEntityValidationException ex)
                    {
                        foreach (var entityValidationErrors in ex.EntityValidationErrors)
                        {

                            foreach (var validationError in entityValidationErrors.ValidationErrors)
                            {

                                Response.Write("Property: " + validationError.PropertyName + " Error: " + validationError.ErrorMessage);

                            }

                        }
                    }
                }
                //deleting excel file from folder  
                if ((System.IO.File.Exists(pathToExcelFile)))
                {
                    System.IO.File.Delete(pathToExcelFile);
                }
                return Json("success", JsonRequestBehavior.AllowGet);
            }
            else
            {
                //alert message for invalid file format  
                data.Add("<ul>");
                data.Add("<li>Only Excel file format is allowed</li>");
                data.Add("</ul>");
                data.ToArray();
                return Json(data, JsonRequestBehavior.AllowGet);
            }
        }
        else
        {
            data.Add("<ul>");
            if (FileUpload == null) data.Add("<li>Please choose Excel file</li>");
            data.Add("</ul>");
            data.ToArray();
            return Json(data, JsonRequestBehavior.AllowGet);
        }
    }

从excel读取值并存储在viewmodel类型的listcollection中

1 个答案: