将数据保存到excel文件答案

【问题标题】：Saving data to excel file将数据保存到excel文件
【发布时间】：2015-01-16 17:55:40
【问题描述】：

我基本上需要将存储过程的输出保存到.xls 或.xlsx Excel 文件中。我可以对 csv 做到这一点，但不能对 Excel 做到这一点。有人可以帮忙吗？请看下面的代码

var result = DealingContext.PopulateUnitRebateData(true, Convert.ToDateTime("2015-01-16")).ToList();

if (result.Count > 0)
{
    string header = @"""Firm ID"",""AccountNumber"",""Portfolio Name"",""Currency"",""Amount"",""Value Date""";
    StringBuilder sb = new StringBuilder();
    sb.AppendLine(header);

    foreach (var i in result)
    {
        sb.AppendLine(string.Join(",",
                            string.Format(@"""{0}""", i.FirmID),
                            string.Format(@"""{0}""", i.AccountNumber),
                            string.Format(@"""{0}""", i.PortfolioName),
                            string.Format(@"""{0}""", i.Currency),
                            string.Format(@"""{0}""", i.Amount),
                            string.Format(@"""{0}""", i.ValueDate)));
    }

    HttpContext context = HttpContext.Current;
    context.Response.Write(sb.ToString());
    context.Response.ContentType = "application/vnd.ms-excel";
    context.Response.AddHeader("Content-Disposition", "attachment; filename=TestData.xls");
    context.Response.End();
}

【问题讨论】：

它没有保存在 excel 文件中，因为 excel 不是 CSV 的逗号分隔文件，我建议你在 dot net 中寻找用于生成 excel 文件的 OpenXML SDK，它非常简单并且提供你对文件的控制力很强。

标签： asp.net asp.net-mvc asp.net-mvc-4 c#-4.0 c#-3.0

【解决方案1】：

无法将其保存到 excel 的原因是 excel 的格式与 csv 不同。

我用来将数据保存到 excel 的最好（也是最简单）的库是 LinqToExcel https://code.google.com/p/linqtoexcel/

Nuget

PM> Install-Package LinqToExcel

【讨论】：

【解决方案2】：

您可以尝试使用 Microsoft.Office.Interop.Excel 将数据导出到 Excel

传递数据集，它至少有一个数据表和有效的文件名和路径。

    public void WriteToExcel(DataSet dataSet , string fileNameWithPath)
    {
        Excel.Application xlApp;
        Excel.Workbook xlWorkBook;
        Excel.Worksheet xlWorkSheet;
        object misValue = System.Reflection.Missing.Value;

        xlApp = new Excel.Application();
        xlWorkBook = xlApp.Workbooks.Add(misValue);
        xlWorkSheet = (Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);
        try
        {
            string data = string.Empty;

    //Setting up Columns on Excel
            for (int i = 0; i < 1; i++)
            {
                for (int j = 0; j <= dataSet.Tables[0].Columns.Count - 1; j++)
                {
                    data = dataSet.Tables[0].Columns[j].ColumnName.ToString();
                    xlWorkSheet.Cells[i + 1, j + 1] = data;
                }
            }

    //data Insertion
            for (int i = 0; i <= dataSet.Tables[0].Rows.Count - 1; i++)
            {
                for (int j = 0; j <= dataSet.Tables[0].Columns.Count - 1; j++)
                {
                    xlWorkSheet.Cells[i + 2, j + 1].NumberFormat = "@"; //format as text
                    data = result.Tables[0].Rows[i].ItemArray[j].ToString();
                    xlWorkSheet.Cells[i + 2, j + 1] = data;
                }
            }
            Excel.Range range = xlWorkSheet.Range[xlWorkSheet.Cells[1, 1], xlWorkSheet.Cells[1, result.Tables[0].Columns.Count]];
            range.Font.Bold = true;
            range.Interior.ColorIndex = 15;
            range.EntireColumn.AutoFit();

            xlWorkSheet.PageSetup.LeftMargin = 0.5;
            xlWorkSheet.PageSetup.RightMargin = 0.5;
            xlWorkSheet.PageSetup.Zoom = false;
            xlWorkSheet.PageSetup.FitToPagesWide = 1;
            xlWorkSheet.PageSetup.FitToPagesTall = Math.Ceiling((result.Tables[0].Rows.Count + 1) / 50.0);
            xlWorkSheet.PageSetup.Orientation = Excel.XlPageOrientation.xlLandscape;
            xlWorkSheet.PageSetup.PaperSize = Excel.XlPaperSize.xlPaperLetter;

            xlWorkBook.SaveAsfileNameWithPathExcel.XlFileFormat.xlOpenXMLWorkbook, misValue, misValue, misValue, misValue, Excel.XlSaveAsAccessMode.xlExclusive, misValue, misValue, misValue, misValue, misValue);


            xlWorkBook.Close(true, misValue, misValue);
            xlApp.Quit();


        }
        catch (Exception ex)
        {


        }


        finally
        {   
    xlWorkSheet = null;
            xlWorkBook = null;
            if (xlApp != null)
            {
                xlApp.Quit();
            }
            xlApp = null;

            GC.Collect();
            GC.WaitForPendingFinalizers();
        }

    }

【讨论】：