Question

当我的数据包含delmiter值时，我遇到了问题，即这些单元格将被填充到错误的位置。

我正在从我的应用程序导出和导入excel数据。以下是我的导出的工作片段。我将分隔符设置为“;”但是如果我的任何属性值包含此字符，都会引起问题。因此，我想知道是否有更好的方法来加载数据，从而允许我在单元格中使用定界符值。

 public void Export()
        {
            using (ExcelPackage excel = new ExcelPackage())
            {
                excel.Workbook.Worksheets.Add("Worksheet1");
                var headerRow = new List<string[]>()
                {
                    new string[] { "Id", "FirstName", "LastName",  }
                };
                // Determine the header range (e.g. A1:D1)
                string headerRange = "A1:" + Char.ConvertFromUtf32(headerRow[0].Length + 64) + "1";
                var worksheet = excel.Workbook.Worksheets["Worksheet1"];
                worksheet.Cells[headerRange].LoadFromArrays(headerRow);
                worksheet.DefaultColWidth = 20.0;

                //TODO examine delimiter 
                var counter = 2;
                var format = new OfficeOpenXml.ExcelTextFormat();
                format.Delimiter = ';';
                //format.TextQualifier = '"';
                format.DataTypes = new[] { eDataTypes.String };

                foreach (Attendee item in context.Attendees.Include(attendee => attendee.Tags))
                {
                    worksheet.Cells[counter++, 1].LoadFromText($"{item.Id};{item.FirstName};{item.LastName}", format);
                }

                //Create the response
                Response.Clear();
                Response.ContentEncoding = Encoding.UTF8;
                Response.HeaderEncoding = Encoding.UTF8;
                Response.Charset = Encoding.UTF8.WebName;
                Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
                Response.AddHeader("Content-Disposition", "attachment; filename=people.xlsx");
                Response.BinaryWrite(excel.GetAsByteArray()); 
                Response.Flush(); 
                Response.End();
               }
        }

这有效，但是如果我的任何字段包含“;”我会有问题。我可以使用某些古老的定界符值还是一种更安全的方式来加载数据？我可能会编写两个嵌套的for循环，并在每个单元上调用称重传感器，但这会很丑陋，因为我的真实代码中大约有15列/字段。我也无法从集合中加载数据，因为有些字段我不想显示，它们最终以错误的顺序显示。

Answer 1

为什么不逐个使用电池？

foreach (Attendee item in context.Attendees.Include(attendee => attendee.Tags))
{
    int column = 1;
    worksheet.Cells[counter, column++].Value = item.Id;
    worksheet.Cells[counter, column++].Value = item.FirstName;
    worksheet.Cells[counter++, column++].Value = item.LastName;
}

编辑-完整代码

public void Export()
    {
        using (ExcelPackage excel = new ExcelPackage())
        {
            excel.Workbook.Worksheets.Add("Worksheet1");
            var headerRow = new List<string[]>()
            {
                new string[] { "Id", "FirstName", "LastName",  }
            };
            // Determine the header range (e.g. A1:D1)
            string headerRange = "A1:" + Char.ConvertFromUtf32(headerRow[0].Length + 64) + "1";
            var worksheet = excel.Workbook.Worksheets["Worksheet1"];
            worksheet.Cells[headerRange].LoadFromArrays(headerRow);
            worksheet.DefaultColWidth = 20.0;

            var counter = 2;

            foreach (Attendee item in context.Attendees.Include(attendee => attendee.Tags))
            {
                int column = 1;
                worksheet.Cells[counter, column++].Value = item.Id;
                worksheet.Cells[counter, column++].Value = item.FirstName;
                worksheet.Cells[counter++, column++].Value = item.LastName;
            }

            //Create the response
            Response.Clear();
            Response.ContentEncoding = Encoding.UTF8;
            Response.HeaderEncoding = Encoding.UTF8;
            Response.Charset = Encoding.UTF8.WebName;
            Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
            Response.AddHeader("Content-Disposition", "attachment; filename=people.xlsx");
            Response.BinaryWrite(excel.GetAsByteArray()); 
            Response.Flush(); 
            Response.End();
    }
}

Answer 2

有一个ascii“ VTAB”字符（chr（11），0x0B），可以安全地用作分隔符，否则您可能永远不会遇到它了：）

有多少人真的知道如何按住ALT键（在Windows中）并在小键盘上键入“ 0011”来输入该控制字符？

当分隔符可能在单元格内出现时，如何使用EPPlus添加一行数据？

2 个答案: