DataGridView数据到Excel方式总结.doc

#region DataGridView数据显示到Excel / / 打开Excel并将DataGridView控件中数据导出到Excel / / DataGridView对象 / 是否显示Excel界面 / / add com Microsoft Excel 11.0 Object Library / using Excel=Microsoft.Office.Interop.Excel; / / public bool DataGridviewShowToExcel(DataGridView dgv, bool isShowExcle) if (dgv.Rows.Count = 0) return false; /建立Excel对象 Excel.Application excel = new Excel.Application(); excel.Application.Workbooks.Add(true); excel.Visible = isShowExcle; /生成字段名称 for (int i = 0; i dgv.ColumnCount; i+) excel.Cells1, i + 1 = dgv.Columnsi.HeaderText; /填充数据 for (int i = 0; i dgv.RowCount - 1; i+) for (int j = 0; j dgv.ColumnCount; j+) if (dgvj, i.ValueType = typeof(string) excel.Cellsi + 2, j + 1 = + dgvj, i.Value.ToString(); else excel.Cellsi + 2, j + 1 = dgvj, i.Value.ToString(); return true; #endregion #region DateGridView导出到csv格式的Excel / / 常用方法，列之间加/t，一行一行输出，此文件其实是csv文件，不过默认可以当成Excel打开。 / / / using System.IO; / / private void DataGridViewToExcel(DataGridView dgv) SaveFileDialog dlg = new SaveFileDialog(); dlg.Filter = Execl files (*.xls)|*.xls; dlg.FilterIndex = 0; dlg.RestoreDirectory = true; dlg.CreatePrompt = true; dlg.Title = 保存为Excel文件; if (dlg.ShowDialog() = DialogResult.OK) Stream myStream; myStream = dlg.OpenFile(); StreamWriter sw = new StreamWriter(myStream, System.Text.Encoding.GetEncoding(-0); string columnTitle = ; try /写入列标题 for (int i = 0; i 0) columnTitle += /t; columnTitle += dgv.Columnsi.HeaderText; sw.WriteLine(columnTitle); /写入列内容 for (int j = 0; j dgv.Rows.Count; j+) string columnValue = ; for (int k = 0; k 0) columnValue += /t; if (dgv.Rowsj.Cellsk.Value = null) columnValue += ; else columnValue += dgv.Rowsj.Cellsk.Value.ToString().Trim(); sw.WriteLine(columnValue); sw.Close(); myStream.Close(); catch (Exception e) MessageBox.Show(e.ToString(); finally sw.Close(); myStream.Close(); #endregion #region DataGridView导出到Excel，有一定的判断性 / /方法，导出DataGridView中的数据到Excel文件 / / / add com Microsoft Excel 11.0 Object Library / using Excel=Microsoft.Office.Interop.Excel; / using System.Reflection; / / DataGridView public static void DataGridViewToExcel(DataGridView dgv) #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 = xls ; /文件后缀列表 dlg.Filter = EXCEL文件(*.XLS)|*.xls ; /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 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 Excel.Application objExcel = null; Excel.Workbook objWorkbook = null; Excel.Worksheet objsheet = null; try /申明对象 objExcel = new Microsoft.Office.Interop.Excel.Application(); objWorkbook = objExcel.Workbooks.Add(Missing.Value); objsheet = (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.Columnsi.Visible = true) objExcel.Cells1, displayColumnsCount = dgv.Columnsi.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.Columnscol.Visible = true) try objExcel.Cellsrow + 2, displayColumnsCount = dgv.Rowsrow.Cellscol.Value.ToString().Trim(); 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, 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 + /n/n导出完毕! , 提示 , MessageBoxButtons.OK, MessageBoxIcon.Information); #endregion #region DataGridView数据显示到Excel / / 打开Excel并将DataGridView控件中数据导出到Excel / / DataGridView对象 / 是否显示Excel界面 / / add com Microsoft Excel 11.0 Object Library / using Excel=Microsoft.Office.Interop.Excel; / / public bool DataGridviewShowToExcel(DataGridView dgv, bool isShowExcle) if (dgv.Rows.Count = 0) return false; /建立Excel对象 Excel.Application excel = new Excel.Application(); excel.Application.Workbooks.Add(true); excel.Visible = isShowExcle; /生成字段名称 for (int i = 0; i dgv.ColumnCount; i+) excel.Cells1, i + 1 = dgv.Columnsi.HeaderText; /填充数据 for (int i = 0; i dgv.RowCount - 1; i+) for (int j = 0; j dgv.ColumnCount; j+) if (dgvj, i.ValueType = typeof(string) excel.Cellsi + 2, j + 1 = + dgvj, i.Value.ToString(); else excel.Cellsi + 2, j + 1 = dgvj, i.Value.ToString(); return true; #endregion #region DateGridView导出到csv格式的Excel / / 常用方法，列之间加/t，一行一行输出，此文件其实是csv文件，不过默认可以当成Excel打开。 / / / using System.IO; / / private void DataGridViewToExcel(DataGridView dgv) SaveFileDialog dlg = new SaveFileDialog(); dlg.Filter = Execl files (*.xls)|*.xls; dlg.FilterIndex = 0; dlg.RestoreDirectory = true; dlg.CreatePrompt = true; dlg.Title = 保存为Excel文件; if (dlg.ShowDialog() = DialogResult.OK) Stream myStream; myStream = dlg.OpenFile(); StreamWriter sw = new StreamWriter(myStream, System.Text.Encoding.GetEncoding(-0); string columnTitle = ; try /写入列标题 for (int i = 0; i 0) columnTitle += /t; columnTitle += dgv.Columnsi.HeaderText; sw.WriteLine(columnTitle); /写入列内容 for (int j = 0; j dgv.Rows.Count; j+) string columnValue = ; for (int k = 0; k 0) columnValue += /t; if (dgv.Rowsj.Cellsk.Value = null) columnValue += ; else columnValue += dgv.Rowsj.Cellsk.Value.ToString().Trim(); sw.WriteLine(columnValue); sw.Close(); myStream.Close(); catch (Exception e) MessageBox.Show(e.ToString(); finally sw.Close(); myStream.Close(); #endregion #region DataGridView导出到Excel，有一定的判断性 / /方法，导出DataGridView中的数据到Excel文件 / / / add com Microsoft Excel 11.0 Object Library / using Excel=Microsoft.Office.Interop.Excel; / using System.Reflection; / / DataGridView public static void DataGridViewToExcel(DataGridView dgv) #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 = xls ; /文件后缀列表 dlg.Filter = EXCEL文件(*.XLS)|*.xls ; /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 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 Excel.Application objExcel = null; Excel.Workbook objWorkbook = null; Excel.Worksheet objsheet = null; try /申明对象 objExcel = new Microsoft.Office.Interop.Excel.Application(); objWorkbook = objExcel.Workbooks.Add(Missing.Value); objsheet = (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.Columnsi.Visible = true) objExcel.Cells1, displayColumnsCount = dgv.Columnsi.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.Columnscol.Visible = true) try objExcel.Cellsrow + 2, displayColumnsCount = dgv.Rowsrow.Cellscol.Value.ToString().Trim(); 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, 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 + /n/n导出完毕! , 提示 , MessageBoxButtons.OK, MessageBoxIcon.Information); #endregion