Question

在我的MVC 5网站中，我有一个稳定的导出到Excel功能，但用户要求我使列标题“＃34;用户友好。”＃34;

在我的模型中，我使用[Display(Name="Friendly Column Name")]注释，它们在View页面上按预期显示，但是当用户触发导出功能时，它们不会转移到导出的Excel文件。相反，真实的名字出现了。

我知道我可以通过 LoadFromCollection 之外的其他方法加载工作表单元格，但我想知道是否仍然可以使用 LoadFromCollection 并使用模型＆＃39 ; s显示（名称（））注释。

这就是我目前所拥有的：

public ActionResult ExportToExcel(string _selectedCampus)
    {
        // This is the query result set the user wishes to export to file.
        IEnumerable<Mia1aSec1FayExport> exportQuery = unitOfWork
            .Mia1aSec1FayRepository.Get().Select(n => new Mia1aSec1FayExport
        {
            Campus = n.Campus,
            StudentName = n.StudentName,
            CreditsBeforeSchoolYear = n.CreditsBeforeSchoolYear,
            CreditsDuringSemester1 = n.CreditsDuringSemester1,
            EligibleFayCount = n.EligibleFayCount,
            EligibleFayMeetingGoal = n.EligibleFayMeetingGoal
        }).Where(n => n.Campus == _selectedCampus).OrderBy(n => n.StudentName)
        .AsEnumerable();

        // The current iteration saves the table contents, but without the   
        // [Display{Name"xxx)] annotation from the model.

        byte[] response;   
        using (var excelFile = new ExcelPackage())
        {
            excelFile.Workbook.Properties.Title = "MIA 1A (i) Eligible FAY Students";                
            var worksheet = excelFile.Workbook.Worksheets.Add("Sheet1");                   
            worksheet.Cells["A1"]
                .LoadFromCollection(Collection: exportQuery, PrintHeaders: true);
            response = excelFile.GetAsByteArray();
        }

        // Save dialog appears through browser for user to save file as desired.
        return File(response, "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet", 
            "Mia1aSec1Fay.xlsx");
    }

解决方法是覆盖标题单元格，但这是不可取的，原因有两个：（1）我已经在模型中将列名称写为注释，这意味着我现在在两个不同的地方写入相同的信息，（2）我必须手动保持信息同步，以防用户想要更改，我可能会忘记这样做。

// This loads teh table as seen by the user in the index view.
            worksheet.Cells["A1"].LoadFromCollection(Collection: exportQuery, PrintHeaders: true);

            // Workaround overwrite header cells, as I'm not able to use Display Name annotation.
            worksheet.Cells[1, 1].Value = "Campus";
            worksheet.Cells[1, 2].Value = "Student Name";
            worksheet.Cells[1, 3].Value = "Credits Before SY";
            worksheet.Cells[1, 4].Value = "Credits During Semester 1";
            worksheet.Cells[1, 5].Value = "Legible Population";
            worksheet.Cells[1, 6].Value = "Eligible Students Earning 2+ Credits";

正如所写，我真的希望这不是唯一的选择。必须有一种方法可以在标题中写入显示名称值而不是真实名称。

Answer 1

LoadFromCollection 仅响应DisplayName或Description属性，而不响应Display属性。

因此，您可以尝试将其中一个属性添加到当前属性中。

[DisplayName("Friendly Column Name")]
[Display(Name = "Friendly Column Name")]
public string StudentName { get; set; }

还要确保在调用 LoadFromCollection 时将PrintHeaders参数设置为true，但是你说真实的名字出现了，所以可能已经没问题了。

Answer 2

＃将记录导出到csv文件中。
1.使用标题创建模型类

               public class EmployeeDetails 
                {
                     [Name("ID")]
                    public string id{ get; set; }
            
                     [Name("Name")]
                    public string name{ get; set; }
            
                     [Name("Designation")]
                    public string  designation{ get; set; }
                }

2。使用CSV Helper类导出

       var data = new EmployeeDetails();
       List<EmployeeDetails> rows = new List<EmployeeDetails>() { data };
                   using (var memoryStream = new MemoryStream())
                   using (var streamWriter = new StreamWriter(memoryStream))
                   using (var csvWriter = new CsvWriter(streamWriter, CultureInfo.CurrentCulture))
                   {
                       csvWriter.WriteHeader(typeof(EmployeeDetails));
                       csvWriter.NextRecord();
                       csvWriter.WriteRecords(rows);
       
                       csvWriter.Flush();
                       streamWriter.Flush();
                       memoryStream.Position = 0;
       
                       return memoryStream;
                   }

如何使用[Display（Name =＆＃34;＆＃34;）]作为LoadFromCollection的列标题

2 个答案: