Winform 中 dataGridView 导出到Excel中的方法总结
最近,在做CS端数据导出到Excel中时网上找了很多代码感觉都不是自己想要的,通过自己的整理归纳得到一个比较通用的方法,就给大家分享一下;
该方法需要用到两个参数(即对象),一个 DataGridView对象 另外一个是我自己添加的一个进度条的对象,这样导出数据的时候会出现一个进度条,废话就不多说了,直接上源码,大家有什么想法可以留言一起讨论。
第一种方式:
public static bool OutToExcelFromDataGridView(string title, DataGridView dgv, bool isShowExcel) { int titleColumnSpan = 0;//标题的跨列数 string fileName = "";//保存的excel文件名 int columnIndex = 1;//列索引 if (dgv.Rows.Count == 0) return false; /*保存对话框*/ SaveFileDialog sfd = new SaveFileDialog(); sfd.Filter = "导出Excel(*.xls)|*.xlsx"; sfd.FileName = title + DateTime.Now.ToString("yyyyMMddhhmmss"); if (sfd.ShowDialog() == DialogResult.OK) { fileName = sfd.FileName; /*建立Excel对象*/ Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application(); if (excel == null) { MessageBox.Show("无法创建Excel对象,可能您的计算机未安装Excel!"); return false; } try { excel.Application.Workbooks.Add(true); excel.Visible = isShowExcel; /*分析标题的跨列数*/ foreach (DataGridViewColumn column in dgv.Columns) { if (column.Visible == true) titleColumnSpan++; } /*合并标题单元格*/ Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)excel.ActiveSheet; //worksheet.get_Range("A1", "C10").Merge(); worksheet.get_Range(worksheet.Cells[1, 1] as Range, worksheet.Cells[1, titleColumnSpan] as Range).Merge(); /*生成标题*/ excel.Cells[1, 1] = title; (excel.Cells[1, 1] as Range).HorizontalAlignment = XlHAlign.xlHAlignCenter;//标题居中 //生成字段名称 columnIndex = 1; for (int i = 0; i < dgv.ColumnCount; i++) { if (dgv.Columns[i].Visible == true && dgv.Columns[i].HeaderText != "删除") { excel.Cells[2, columnIndex] = dgv.Columns[i].HeaderText; (excel.Cells[2, columnIndex] as Range).HorizontalAlignment = XlHAlign.xlHAlignCenter;//字段居中 columnIndex++; } } //填充数据 for (int i = 0; i < dgv.RowCount; i++) { columnIndex = 1; for (int j = 0; j < dgv.ColumnCount; j++) { if (dgv.Columns[j].Visible == true && dgv.Columns[j].HeaderText != "删除") { if (dgv[j, i].ValueType == typeof(string)) { excel.Cells[i + 3, columnIndex] = "'" + dgv[j, i].Value.ToString(); } else { excel.Cells[i + 3, columnIndex] = dgv[j, i].Value.ToString(); } (excel.Cells[i + 3, columnIndex] as Range).HorizontalAlignment = XlHAlign.xlHAlignLeft;//字段居中 columnIndex++; } } } worksheet.SaveAs(fileName, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing); } catch { } finally { excel.Quit(); excel = null; GC.Collect(); } KillProcess("Excel"); return true; } else { return false; } } private static void KillProcess(string processName)//杀死与Excel相关的进程 { System.Diagnostics.Process myproc = new System.Diagnostics.Process();//得到所有打开的进程 try { foreach (System.Diagnostics.Process thisproc in System.Diagnostics.Process.GetProcessesByName(processName)) { if (!thisproc.CloseMainWindow()) { thisproc.Kill(); } } } catch (Exception Exc) { throw new Exception("", Exc); } }
第二种方式
public static void DataGridViewToExcel(DataGridView dgv,ProgressBar tempProgressBar) { #region 验证可操作性 //申明保存对话框 SaveFileDialog dlg = new SaveFileDialog(); //默然文件后缀 dlg.DefaultExt = "xlsx"; //文件后缀列表 dlg.Filter = "EXCEL文件(*.XLS)|*.xlsx"; //默然路径是系统当前路径 dlg.InitialDirectory = Directory.GetCurrentDirectory(); //打开保存对话框 if (dlg.ShowDialog() == DialogResult.Cancel) return; //返回文件路径 string fileNameString = dlg.FileName; //验证strFileName是否为空或值无效 if (fileNameString.Trim() == " ") { return; } //定义表格内数据的行数和列数 int rowscount = dgv.Rows.Count; int colscount = dgv.Columns.Count; //行数必须大于0 if (rowscount <= 0) { MessageBox.Show("没有数据可供保存 ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information); return; } //列数必须大于0 if (colscount <= 0) { MessageBox.Show("没有数据可供保存 ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information); return; } //行数不可以大于65536 if (rowscount > 65536) { MessageBox.Show("数据记录数太多(最多不能超过65536条),不能保存 ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information); return; } //列数不可以大于255 if (colscount > 255) { MessageBox.Show("数据记录行数太多,不能保存 ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information); return; } //验证以fileNameString命名的文件是否存在,如果存在删除它 FileInfo file = new FileInfo(fileNameString); if (file.Exists) { try { file.Delete(); } catch (Exception error) { MessageBox.Show(error.Message, "删除失败 ", MessageBoxButtons.OK, MessageBoxIcon.Warning); return; } } #endregion Microsoft.Office.Interop.Excel.Application objExcel = null; Microsoft.Office.Interop.Excel.Workbook objWorkbook = null; Microsoft.Office.Interop.Excel.Worksheet objsheet = null; try { //申明对象 objExcel = new Microsoft.Office.Interop.Excel.Application(); objWorkbook = objExcel.Workbooks.Add(Missing.Value); objsheet = (Microsoft.Office.Interop.Excel.Worksheet)objWorkbook.ActiveSheet; //设置EXCEL不可见 objExcel.Visible = false; //向Excel中写入表格的表头 int displayColumnsCount = 1; for (int i = 0; i <= dgv.ColumnCount - 1; i++) { if (dgv.Columns[i].Visible == true&& dgv.Columns[i].HeaderText.Trim()!="删除" && dgv.Columns[i].HeaderText.Trim() !="") { objExcel.Cells[1, displayColumnsCount] = dgv.Columns[i].HeaderText.Trim(); displayColumnsCount++; } } //设置进度条 tempProgressBar.Refresh(); tempProgressBar.Visible = true; tempProgressBar.Minimum =1; tempProgressBar.Maximum =dgv.RowCount; tempProgressBar.Step = 1; //向Excel中逐行逐列写入表格中的数据 for (int row = 0; row <= dgv.RowCount - 1; row++) { tempProgressBar.PerformStep(); displayColumnsCount = 1; for (int col = 0; col < colscount; col++) { if (dgv.Columns[col].Visible == true&& dgv.Columns[col].HeaderText!="删除" && dgv.Columns[col].HeaderText.Trim() != "") { try { string Val = dgv.Rows[row].Cells[col].Value.ToString().Trim(); if (Val.Length >8) { Val = "'" + Val;//加单引号 } objExcel.Cells[row + 2, displayColumnsCount] = Val; displayColumnsCount++; } catch (Exception) { } } } } //隐藏进度条 tempProgressBar.Visible = false; //保存文件 objWorkbook.SaveAs(fileNameString, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlShared, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value); } catch (Exception error) { MessageBox.Show(error.Message, "警告 ", MessageBoxButtons.OK, MessageBoxIcon.Warning); return; } finally { //关闭Excel应用 if (objWorkbook != null) objWorkbook.Close(Missing.Value, Missing.Value, Missing.Value); if (objExcel.Workbooks != null) objExcel.Workbooks.Close(); if (objExcel != null) objExcel.Quit(); objsheet = null; objWorkbook = null; objExcel = null; } MessageBox.Show(fileNameString + "导出完毕! ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information); }
个人推荐第一种,经过测试第一种也可以,但是比较麻烦一些,第二种通俗简单,推荐使用;
根据个人喜好的选择吧,欢迎大神前来提意见;
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