1 下载Epplus最新版:http://epplus.codeplex.com/
2 在项目中添加引用 EEPULS.dll(测试环境Win7+V2010旗舰)
3 添加using引用
using OfficeOpenXml;
using OfficeOpenXml.Drawing;
using OfficeOpenXml.Drawing.Chart;
using OfficeOpenXml.Style;
4 read Excel文件
readExcel文件到Datatable
private void button2_Click(object sender, EventArgs e) { string pfilePath = ""; OpenFileDialog ofd = new OpenFileDialog(); ofd.Filter = "*.xls|*.xlsx"; if (ofd.ShowDialog() == System.Windows.Forms.DialogResult.OK) { pfilePath = ofd.FileName; } if (string.IsNullOrEmpty(pfilePath)) { MessageBox.Show("没有选中文件"); return; } FileInfo existingFile = new FileInfo(pfilePath); try { ExcelPackage package = new ExcelPackage(existingFile); int vSheetCount = package.Workbook.Worksheets.Count; //获取总Sheet页 ExcelWorksheet worksheet = package.Workbook.Worksheets[1];//选定 指定页 int maxColumnNum = worksheet.Dimension.End.Column;//最大列 int minColumnNum = worksheet.Dimension.Start.Column;//最小列 int maxRowNum = worksheet.Dimension.End.Row;//最小行 int minRowNum = worksheet.Dimension.Start.Row;//最大行 DataTable vTable = new DataTable(); DataColumn vC; for (int j = 1; j <= maxColumnNum; j++) { vC = new DataColumn("A_" + j, typeof(string)); vTable.Columns.Add(vC); } if (maxRowNum > 200) { maxRowNum = 200; } for (int n = 1; n <= maxRowNum; n++) { DataRow vRow = vTable.NewRow(); for (int m = 1; m <= maxColumnNum; m++) { vRow[m - 1] = worksheet.Cells[n, m].Value; } vTable.Rows.Add(vRow); } this.dataGridView1.DataSource = vTable; } catch (Exception vErr) { MessageBox.Show(vErr.Message); } }
5 write Excel文件
5.1 直接生成EXcel示例
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private void button1_Click( object sender, EventArgs e) { OfficeOpenXml.ExcelPackage ep = new OfficeOpenXml.ExcelPackage(); OfficeOpenXml.ExcelWorkbook wb = ep.Workbook; OfficeOpenXml.ExcelWorksheet ws = wb.Worksheets.Add( "我的工作表" ); //配置文件属性 wb.Properties.Category = "类别" ; wb.Properties.Author = "作者" ; wb.Properties.Comments = "备注" ; wb.Properties.Company = "公司" ; wb.Properties.Keywords = "关键字" ; wb.Properties.Manager = "管理者" ; wb.Properties.Status = "内容状态" ; wb.Properties.Subject = "主题" ; wb.Properties.Title = "标题" ; wb.Properties.LastModifiedBy = "最后一次保存者" ; //写数据 ws.Cells[1, 1].Value = "Hello" ; ws.Column(1).Width=40; //修改列宽 ws.Cells[ "B1" ].Value = "World" ; ws.Cells[3, 3, 3, 5].Merge = true ; ws.Cells[3, 3].Value = "Cells[3, 3, 3, 5]合并" ; ws.Cells[ "A4:D5" ].Merge = true ; ws.Cells[ "A4" ].Value = "Cells["A4:D5"]合并" ; SaveFileDialog sfd = new SaveFileDialog(); sfd.Filter = "*.xls|*.xlsx" ; if (sfd.ShowDialog() == System.Windows.Forms.DialogResult.OK) { FileInfo file = new FileInfo(sfd.FileName); ep.File = file; ep.Save(); MessageBox.Show( "保存成功" ); } else { MessageBox.Show( "取消保存" ); } } |
5.2 从DataGridView导出至Excel
将DataGridView显示内容导出至Excel(DataTable只需小改动即可)
OfficeOpenXml.ExcelPackage ep = new OfficeOpenXml.ExcelPackage(); OfficeOpenXml.ExcelWorkbook wb = ep.Workbook; OfficeOpenXml.ExcelWorksheet ws = wb.Worksheets.Add("我的工作表"); //配置文件属性,可以不注释掉 //wb.Properties.Category = "类别"; //wb.Properties.Author = "作者"; //wb.Properties.Comments = "备注"; //wb.Properties.Company = "公司"; //wb.Properties.Keywords = "关键字"; //wb.Properties.Manager = "管理者"; //wb.Properties.Status = "内容状态"; //wb.Properties.Subject = "主题"; //wb.Properties.Title = "标题"; //wb.Properties.LastModifiedBy = "最后一次保存者"; for (int i = 0; i < dataGridView1.Rows.Count; i++) { for (int j = 1; j < dataGridView1.Columns.Count; j++) { if (dataGridView1.Columns[j-1].Visible == true) { if (dataGridView1.Rows[i].Cells[j-1].Value == null) { ws.Cells[i+1, j].Value = " "; } else { string rowstr = dataGridView1.Rows[i].Cells[j-1].Value.ToString(); if (rowstr.IndexOf(" ") > 0) rowstr = rowstr.Replace(" ", " "); if (rowstr.IndexOf(" ") > 0) rowstr = rowstr.Replace(" ", " "); ws.Cells[i+1, j].Value = rowstr; } } } } SaveFileDialog sfd = new SaveFileDialog(); sfd.Filter = "*.xls|*.xlsx"; if (sfd.ShowDialog() == System.Windows.Forms.DialogResult.OK) { FileInfo file = new FileInfo(sfd.FileName); ep.File = file; ep.Save(); MessageBox.Show("保存成功"); } else { MessageBox.Show("取消保存"); }
/// <summary> /// 读取sheet 内的数据进入实体 /// </summary> /// <param name="worksheet"></param> /// <returns></returns> public List<Person> GetSheetValues(string filepath) { FileInfo file = new FileInfo(filepath); if (file != null) { using (ExcelPackage package = new ExcelPackage(file)) { ExcelWorksheet worksheet = package.Workbook.Worksheets[0]; //获取表格的列数和行数 int rowCount = worksheet.Dimension.Rows; int ColCount = worksheet.Dimension.Columns; var persons = new List<Person>(); for (int row = 1; row <= rowCount; row++) { Person person = new Person(); person.Name = worksheet.Cells[row, 1].Value.ToString(); person.Sex = worksheet.Cells[row, 2].Value.ToString(); persons.Add(person); } return persons; } } return null; }
上述代码大部分来源网络,只进行过小改动,下面是原文和资料地址:
http://blog.csdn.net/jimmy2248/article/details/8363697
http://blog.csdn.net/zhoufoxcn/article/details/14112473
http://www.cnblogs.com/liudeyun/p/3535740.html
http://blog.163.com/china__xuhua/blog/static/19972316920136335721285/
http://www.cnblogs.com/xiaotan68/archive/2008/03/20/1114796.html