如何使用C#创建Excel电子表格而不需要在运行代码的计算机上安装Excel?


当前回答

我找到了另一个没有太多依赖性的库:MiniExcel。

您可以使用DataTables作为电子表格创建数据集(表格的名称是电子表格的名称),并通过以下方式将其保存到.xlsx文件

using var stream = File.Create(filePath);
stream.SaveAs(dataSet);

or

MiniExcel.SaveAs(filePath, dataSet);

它还提供Excel文件的读取,并支持CSV文件的读取和写入。

其他回答

public class GridViewExportUtil
{
    public static void Export(string fileName, GridView gv)
    {
        HttpContext.Current.Response.Clear();
        HttpContext.Current.Response.AddHeader(
            "content-disposition", string.Format("attachment; filename={0}", fileName));
        HttpContext.Current.Response.ContentType = "application/ms-excel";

        using (StringWriter sw = new StringWriter())
        {
            using (HtmlTextWriter htw = new HtmlTextWriter(sw))
            {
                //  Create a form to contain the grid
                Table table = new Table();

                //  add the header row to the table
                if (gv.HeaderRow != null)
                {
                    GridViewExportUtil.PrepareControlForExport(gv.HeaderRow);
                    table.Rows.Add(gv.HeaderRow);
                }

                //  add each of the data rows to the table
                foreach (GridViewRow row in gv.Rows)
                {
                    GridViewExportUtil.PrepareControlForExport(row);
                    table.Rows.Add(row);
                }

                //  add the footer row to the table
                if (gv.FooterRow != null)
                {
                    GridViewExportUtil.PrepareControlForExport(gv.FooterRow);
                    table.Rows.Add(gv.FooterRow);
                }

                //  render the table into the htmlwriter
                table.RenderControl(htw);

                //  render the htmlwriter into the response
                HttpContext.Current.Response.Write(sw.ToString());
                HttpContext.Current.Response.End();
            }
        }
    }

    /// <summary>
    /// Replace any of the contained controls with literals
    /// </summary>
    /// <param name="control"></param>
    private static void PrepareControlForExport(Control control)
    {
        for (int i = 0; i < control.Controls.Count; i++)
        {
            Control current = control.Controls[i];
            if (current is LinkButton)
            {
                control.Controls.Remove(current);
                control.Controls.AddAt(i, new LiteralControl((current as LinkButton).Text));
            }
            else if (current is ImageButton)
            {
                control.Controls.Remove(current);
                control.Controls.AddAt(i, new LiteralControl((current as ImageButton).AlternateText));
            }
            else if (current is HyperLink)
            {
                control.Controls.Remove(current);
                control.Controls.AddAt(i, new LiteralControl((current as HyperLink).Text));
            }
            else if (current is DropDownList)
            {
                control.Controls.Remove(current);
                control.Controls.AddAt(i, new LiteralControl((current as DropDownList).SelectedItem.Text));
            }
            else if (current is CheckBox)
            {
                control.Controls.Remove(current);
                control.Controls.AddAt(i, new LiteralControl((current as CheckBox).Checked ? "True" : "False"));
            }

            if (current.HasControls())
            {
                GridViewExportUtil.PrepareControlForExport(current);
            }
        }
    }
}

嗨,这个解决方案是将网格视图导出到excel文件中,这可能会帮助您

您可以使用此库创建格式良好的Excel文件:http://officehelper.codeplex.com/documentation参见以下示例:

using (ExcelHelper helper = new ExcelHelper(TEMPLATE_FILE_NAME, GENERATED_FILE_NAME))
{
    helper.Direction = ExcelHelper.DirectionType.TOP_TO_DOWN;
    helper.CurrentSheetName = "Sheet1";
    helper.CurrentPosition = new CellRef("C3");

    //the template xlsx should contains the named range "header"; use the command "insert"/"name".
    helper.InsertRange("header");

    //the template xlsx should contains the named range "sample1";
    //inside this range you should have cells with these values:
    //<name> , <value> and <comment>, which will be replaced by the values from the getSample()
    CellRangeTemplate sample1 = helper.CreateCellRangeTemplate("sample1", new List<string> {"name", "value", "comment"}); 
    helper.InsertRange(sample1, getSample());

    //you could use here other named ranges to insert new cells and call InsertRange as many times you want, 
    //it will be copied one after another;
    //even you can change direction or the current cell/sheet before you insert

    //typically you put all your "template ranges" (the names) on the same sheet and then you just delete it
    helper.DeleteSheet("Sheet3");
}        

示例如下:

private IEnumerable<List<object>> getSample()
{
    var random = new Random();

    for (int loop = 0; loop < 3000; loop++)
    {
        yield return new List<object> {"test", DateTime.Now.AddDays(random.NextDouble()*100 - 50), loop};
    }
}

如果您从代码中创建数据表或数据网格视图,则可以使用此简单方法保存所有数据。不建议使用此方法,但它可以100%工作,即使您没有在计算机中安装MS Excel。

try
 {
  SaveFileDialog saveFileDialog1 = new SaveFileDialog();
  saveFileDialog1.Filter = "Excel Documents (*.xls)|*.xls";
  saveFileDialog1.FileName = "Employee Details.xls";
  if (saveFileDialog1.ShowDialog() == DialogResult.OK)
  {
  string fname = saveFileDialog1.FileName;
  StreamWriter wr = new StreamWriter(fname);
  for (int i = 0; i <DataTable.Columns.Count; i++)
  {
  wr.Write(DataTable.Columns[i].ToString().ToUpper() + "\t");
  }
  wr.WriteLine();

  //write rows to excel file
  for (int i = 0; i < (DataTable.Rows.Count); i++)
  {
  for (int j = 0; j < DataTable.Columns.Count; j++)
  {
  if (DataTable.Rows[i][j] != null)
  {
  wr.Write(Convert.ToString(getallData.Rows[i][j]) + "\t");
  }
   else
   {
   wr.Write("\t");
   }
   }
   //go to next line
   wr.WriteLine();
   }
   //close file
   wr.Close();
   }
   }
   catch (Exception)
   {
    MessageBox.Show("Error Create Excel Sheet!");
   }

前段时间,我在NPOI上创建了一个DLL。使用它非常简单:

IList<DummyPerson> dummyPeople = new List<DummyPerson>();
//Add data to dummyPeople...
IExportEngine engine = new ExcelExportEngine();
engine.AddData(dummyPeople); 
MemoryStream memory = engine.Export();

你可以在这里阅读更多。

顺便说一句,它是100%开源的。随时使用、编辑和共享;)

http://www.codeproject.com/KB/cs/Excel_and_C_.aspx<=为什么不使用内置的windows功能,只需在服务器上安装office,您安装的任何应用程序都可以自动化。

使用本机方法就容易多了。

如果安装了它,你就可以使用它,这是windows中最棒、使用率最低的功能,在过去的好日子里,它被称为COM,它为你节省了大量时间和痛苦。

或者更简单地使用ref lib MS供应品-http://csharp.net-informations.com/excel/csharp-create-excel.htm