Question

如何使用以下方法将此数据表导出为Excel：“ Microsoft.Office.Interop.Excel ”我有这个代码，它会从Master表中获取所有数据，并希望将其导出为excel for更好的视图，不想使用datagrid。我认为有很多关于这个主题的帖子，但通常只是建议使用像“closedxml”这样的广告

        OleDbConnection mycon;           
        DataTable Table = new DataTable("AllData");

        mycon = new OleDbConnection(@"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\Users\jm11321\Documents\DB.mdb;Persist Security Info=False");

        string command = "Select *From Master";
        OleDbCommand oleDbCmd = new OleDbCommand(command,mycon);

        OleDbDataAdapter adapt = new OleDbDataAdapter(oleDbCmd);
        mycon.Open();
        adapt.Fill(Table);
        mycon.Close();

感谢任何帮助。

Answer 1

您必须从here导入Microsoft.Office.Interop.Excel.dll库。在项目中添加新的类文件说ExcelUtility。只需在其中写下以下代码即可。

using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using Excel = Microsoft.Office.Interop.Excel;

namespace ExcelDemo
{
    public class ExcelUtility
    {
        public static void CreateExcel(DataSet ds, string excelPath)
        {
            Excel.Application xlApp;
            Excel.Workbook xlWorkBook;
            Excel.Worksheet xlWorkSheet;
            object misValue = System.Reflection.Missing.Value;

            try
            {
                //Previous code was referring to the wrong class, throwing an exception
                xlApp = new Excel.Application();
                xlWorkBook = xlApp.Workbooks.Add(misValue);
                xlWorkSheet = (Excel.Worksheet)xlWorkBook.Worksheets.get_Item(1);

                for (int i = 0; i <= ds.Tables[0].Rows.Count - 1; i++)
                {
                    for (int j = 0; j <= ds.Tables[0].Columns.Count - 1; j++)
                    {
                        xlWorkSheet.Cells[i + 1, j + 1] = ds.Tables[0].Rows[i].ItemArray[j].ToString();
                    }
                }

                xlWorkBook.SaveAs(excelPath, Excel.XlFileFormat.xlWorkbookNormal, misValue, misValue, misValue, misValue, Excel.XlSaveAsAccessMode.xlExclusive, misValue, misValue, misValue, misValue, misValue);
                xlWorkBook.Close(true, misValue, misValue);
                xlApp.Quit();

                releaseObject(xlApp);
                releaseObject(xlWorkBook);
                releaseObject(xlWorkSheet);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        private static void releaseObject(object obj)
        {
            try
            {
                System.Runtime.InteropServices.Marshal.ReleaseComObject(obj);
                obj = null;
            }
            catch
            {
                obj = null;
            }
            finally
            {
                GC.Collect();
            }
        } 
    }
}

现在在主代码中，只需传递数据集对象和excel路径，如下所示。

ExcelUtility.CreateExcel(ds, "D:\\Demo.xls");

我已经在我的项目中测试并使用过它。

Answer 2

我知道已经有了答案，尽管这是另一种方法

 var workbook = new XLWorkbook();
        var worksheet = workbook.Worksheets.Add("Sample Sheet");
        worksheet.Cell("A1").Value = "Hello World!";
        workbook.SaveAs("HelloWorld.xlsx");

这种方法真的很神奇，你可以将数据集表或表放入像这样的工作簿中

 var wb = new XLWorkbook();

        var dataTable = GetTable("Information");

        // Add a DataTable as a worksheet
        wb.Worksheets.Add(dataTable);

        wb.SaveAs("AddingDataTableAsWorksheet.xlsx");

dll是here

C＃将表导出到Excel

2 个答案: