本文实例讲述了C#导出数据到Excel文件的方法。分享给大家供大家参考。具体实现方法如下：
/// <summary> /// 导出到Excel类，项目需引用Microsodt.Office.Interop.Excel, /// 类文件需using System.Data与System.Windows.Forms命名空间 /// </summary> public class CToExcel { /// <summary> /// 导出到Excel /// </summary> /// <param name="fileName">默认文件名</param> /// <param name="listView">数据源，一个页面上的ListView控件</param> /// <param name="titleRowCount">标题占据的行数，为0表示无标题</param> public void ExportExcel(string fileName, System.Windows.Forms.ListView listView,int titleRowCount) { string saveFileName = ""; //bool fileSaved = false; SaveFileDialog saveDialog = new SaveFileDialog(); saveDialog.DefaultExt = "xls"; saveDialog.Filter = "Excel文件|*.xls"; saveDialog.FileName = fileName; saveDialog.ShowDialog(); saveFileName = saveDialog.FileName; if (saveFileName.IndexOf(":") < 0) return; //被点了取消 Microsoft.Office.Interop.Excel.Application xlApp; try { xlApp = new Microsoft.Office.Interop.Excel.Application(); } catch (Exception) { MessageBox.Show("无法创建Excel对象，可能您的机子未安装Excel"); return; } finally { } 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Title if(titleRowCount!=0) MergeCells(worksheet, 1, 1, titleRowCount, listView.Columns.Count, listView.Tag.ToString()); //写入列标题 for (int i = 0; i <= listView.Columns.Count - 1; i++) { worksheet.Cells[titleRowCount+1, i + 1] = listView.Columns[i].Text; } //写入数值 for (int r = 0; r <= listView.Items.Count - 1; r++) { for (int i = 0; i <= listView.Columns.Count - 1; i++) { worksheet.Cells[r + titleRowCount+2, i + 1] = listView.Items[r].SubItems[i].Text; } System.Windows.Forms.Application.DoEvents(); } worksheet.Columns.EntireColumn.AutoFit();//列宽自适应 //if (Microsoft.Office.Interop.cmbxType.Text != "Notification") //{ // Excel.Range rg = worksheet.get_Range(worksheet.Cells[2, 2], worksheet.Cells[ds.Tables[0].Rows.Count + 1, 2]); // rg.NumberFormat = "00000000"; //} 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); } } //else //{ // fileSaved = false; //} xlApp.Quit(); GC.Collect();//强行销毁 // if (fileSaved && System.IO.File.Exists(saveFileName)) System.Diagnostics.Process.Start(saveFileName); //打开EXCEL MessageBox.Show(fileName + "导出到Excel成功", "提示", MessageBoxButtons.OK); } /// <summary> /// DataTable导出到Excel /// </summary> /// <param name="fileName">默认的文件名</param> /// <param name="dataTable">数据源,一个DataTable数据表</param> /// <param name="titleRowCount">标题占据的行数，为0则表示无标题</param> public void ExportExcel(string fileName,System.Data.DataTable dataTable,int titleRowCount) { string saveFileName = ""; //bool fileSaved = false; SaveFileDialog saveDialog = new SaveFileDialog(); saveDialog.DefaultExt = "xls"; saveDialog.Filter = "Excel文件|*.xls"; saveDialog.FileName = fileName; saveDialog.ShowDialog(); saveFileName = saveDialog.FileName; if (saveFileName.IndexOf(":") < 0) return; //被点了取消 Microsoft.Office.Interop.Excel.Application xlApp; try { xlApp = new Microsoft.Office.Interop.Excel.Application(); } catch (Exception) { MessageBox.Show("无法创建Excel对象，可能您的机子未安装Excel"); return; } finally { } 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Title if(titleRowCount!=0) MergeCells(worksheet, 1, 1, titleRowCount, dataTable.Columns.Count, dataTable.TableName); //写入列标题 for (int i = 0; i <= dataTable.Columns.Count - 1; i++) { worksheet.Cells[titleRowCount+1, i + 1] = dataTable.Columns[i].ColumnName; } //写入数值 for (int r = 0; r <= dataTable.Rows.Count - 1; r++) { for (int i = 0; i <= dataTable.Columns.Count - 1; i++) { worksheet.Cells[r +titleRowCount+ 2, i + 1] = dataTable.Rows[r][i].ToString(); } System.Windows.Forms.Application.DoEvents(); } worksheet.Columns.EntireColumn.AutoFit();//列宽自适应 //if (Microsoft.Office.Interop.cmbxType.Text != "Notification") //{ // Excel.Range rg = worksheet.get_Range(worksheet.Cells[2, 2], worksheet.Cells[ds.Tables[0].Rows.Count + 1, 2]); // rg.NumberFormat = "00000000"; //} 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); } } //else //{ // fileSaved = false; //} xlApp.Quit(); GC.Collect();//强行销毁 // if (fileSaved && System.IO.File.Exists(saveFileName)) System.Diagnostics.Process.Start(saveFileName); //打开EXCEL MessageBox.Show(fileName + "导出到Excel成功", "提示", MessageBoxButtons.OK); } /// <summary> /// 合并单元格，并赋值，对指定WorkSheet操作 /// </summary> /// <param name="sheetIndex">WorkSheet索引</param> /// <param name="beginRowIndex">开始行索引</param> /// <param name="beginColumnIndex">开始列索引</param> /// <param name="endRowIndex">结束行索引</param> /// <param name="endColumnIndex">结束列索引</param> /// <param name="text">合并后Range的值</param> public void MergeCells(Microsoft.Office.Interop.Excel.Worksheet workSheet, int beginRowIndex, int beginColumnIndex, int endRowIndex, int endColumnIndex, string text) { Microsoft.Office.Interop.Excel.Range range = workSheet.get_Range(workSheet.Cells[beginRowIndex, beginColumnIndex], workSheet.Cells[endRowIndex, endColumnIndex]); range.ClearContents(); //先把Range内容清除，合并才不会出错 range.MergeCells = true; range.Value2 = text; range.HorizontalAlignment = Microsoft.Office.Interop.Excel.XlHAlign.xlHAlignCenter; range.VerticalAlignment = Microsoft.Office.Interop.Excel.XlVAlign.xlVAlignCenter; } }
希望本文所述对大家的C#程序设计有所帮助。
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