第一种、首先本form上游datagridview的控件及数据，再建一个button控件作为导出按钮，在按钮click事件中写入以下代码
//保存文件对话框 SaveFileDialog sfd = new SaveFileDialog(); sfd.Filter = "Excel文件|*.xlsx|Word文件|*.docx"; sfd.FilterIndex = 0; if (sfd.ShowDialog() == DialogResult.OK) { string search = "select * from 旧备件表 where(0=0)"; if (this.textBox1.Text.Length > 0) { search = search + " and 物料编码=" + "‘" + textBox1.Text + "‘"; } if (this.textBox2.Text.Length > 0) { search = search + " and 设备号=" + "‘" + textBox2.Text + "‘"; } if (this.textBox3.Text.Length > 0) { search = search + " and 物料描述 like" + "‘%" + textBox3.Text + "%‘";//实现物料描述的模糊查询 } if (this.textBox4.Text.Length > 0) { search = search + " and 备件序列号 like" + "‘%" + textBox4.Text + "%‘";//实现备件序列号的模糊查询 } //调用导出Excel的方法，传入DataTable数据表和路径 SqlDataAdapter sda = new SqlDataAdapter(search, DataBase.GetSqlConnection()); System.Data.DataTable dt = new System.Data.DataTable(); //将数据库中查到的数据填充到DataTable数据表 sda.Fill(dt); ExportExcel(dt, sfd.FileName); } } void ExportExcel(System.Data.DataTable dt, string filepath) { //创建Excel应用程序类的一个实例，相当于从电脑开始菜单打开Excel ApplicationClass xlsxapp = new ApplicationClass(); //新建一张Excel工作簿 Workbook wbook = xlsxapp.Workbooks.Add(true); //第一个sheet页 Worksheet wsheet = (Worksheet)wbook.Worksheets.get_Item(1); //将DataTable的列名显示在Excel表第一行 for (int i = 0; i < dt.Columns.Count; i++) { //注意Excel表的行和列的索引都是从1开始的 wsheet.Cells[1, i + 1] = dt.Columns[i].ColumnName; } //遍历DataTable，给Excel赋值 for (int i = 0; i < dt.Rows.Count; i++) { for (int j = 0; j < dt.Columns.Count; j++) { //从第二行第一列开始写入数据 wsheet.Cells[i + 2, j + 1] = dt.Rows[i][j]; } } //保存文件 wbook.SaveAs(filepath); //释放资源 xlsxapp.Quit(); }
第二种、大同小异
private void button3_Click(object sender, EventArgs e) { string fileName = ""; string saveFileName = ""; SaveFileDialog saveDialog = new SaveFileDialog(); saveDialog.DefaultExt = "xlsx"; saveDialog.Filter = "Excel文件|*.xlsx"; saveDialog.FileName = fileName; saveDialog.ShowDialog(); saveFileName = saveDialog.FileName; if (saveFileName.IndexOf(":") < 0) return; //被点了取消 Microsoft.Office.Interop.Excel.Application xlApp = new Microsoft.Office.Interop.Excel.Application(); if (xlApp == null) { MessageBox.Show("无法创建Excel对象，您的电脑可能未安装Excel"); return; } Microsoft.Office.Interop.Excel.Workbooks workbooks = xlApp.Workbooks; Microsoft.Office.Interop.Excel.Workbook workbook = workbooks.Add(Microsoft.Office.Interop.Excel.XlWBATemplate.xlWBATWorksheet); Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets[1];//取得sheet1 //写入标题 for (int i = 0; i < dataGridView1.ColumnCount; i++) { worksheet.Cells[1, i + 1] = dataGridView1.Columns[i].HeaderText; } //写入数值 for (int r = 0; r < dataGridView1.Rows.Count; r++) { for (int i = 0; i < dataGridView1.ColumnCount; i++) { worksheet.Cells[r + 2, i + 1] = dataGridView1.Rows[r].Cells[i].Value; } System.Windows.Forms.Application.DoEvents(); } worksheet.Columns.EntireColumn.AutoFit();//列宽自适应 MessageBox.Show(fileName + "资料保存成功", "提示", MessageBoxButtons.OK); if (saveFileName != "") { try { workbook.Saved = true; workbook.SaveCopyAs(saveFileName); //fileSaved = true; } catch (Exception ex) {//fileSaved = false; MessageBox.Show("导出文件时出错,文件可能正被打开！\n" + ex.Message); } } xlApp.Quit(); GC.Collect();//强行销毁 } }
3、正在研究前导零问题。。。待续