如何在C#中导出Excel文件

using System; using System.Collections.Generic; using System.Text; using System.Data; using System.Windows.Forms; using System.Reflection; namespace DMS { /// <summary> /// C#操作Excel类 /// </summary> class ExcelOperate { //法一 //public bool DataSetToExcel(DataSet dataSet, bool isShowExcle) //{ // DataTable dataTable = dataSet.Tables[0]; // int rowNumber = dataTable.Rows.Count; // int columnNumber = dataTable.Columns.Count; // if (rowNumber == 0) // { // MessageBox.Show("没有任何数据可以导入到Excel文件！"); // return false; // } // //建立Excel对象 // Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application(); // excel.Application.Workbooks.Add(true); // excel.Visible = isShowExcle;//是否打开该Excel文件 // //填充数据 // for (int c = 0; c < rowNumber; c++) // { // for (int j = 0; j < columnNumber; j++) // { // excel.Cells[c + 1, j + 1] = dataTable.Rows[c].ItemArray[j]; // } // } // return true; //} //法二 //public bool DataSetToExcel(DataSet dataSet, bool isShowExcle) //{ // DataTable dataTable = dataSet.Tables[0]; // int rowNumber = dataTable.Rows.Count; // int rowIndex = 1; // int colIndex = 0; // if (rowNumber == 0) // { // return false; // } // //建立Excel对象 // Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application(); // excel.Application.Workbooks.Add(true); // excel.Visible = isShowExcle; // //生成字段名称 // foreach (DataColumn col in dataTable.Columns) // { // colIndex++; // excel.Cells[1, colIndex] = col.ColumnName; // } // //填充数据 // foreach (DataRow row in dataTable.Rows) // { // rowIndex++; // colIndex = 0; // foreach (DataColumn col in dataTable.Columns) // { // colIndex++; // excel.Cells[rowIndex, colIndex] = row[col.ColumnName]; // } // } // return true; //} //法三（速度最快） /// <summary> /// 将数据集中的数据导出到EXCEL文件 /// </summary> /// <param name="dataSet">输入数据集</param> /// <param name="isShowExcle">是否显示该EXCEL文件</param> /// <returns></returns> public bool DataSetToExcel(DataSet dataSet, bool isShowExcle) { DataTable dataTable = dataSet.Tables[0]; int rowNumber = dataTable.Rows.Count;//不包括字段名 int columnNumber = dataTable.Columns.Count; int colIndex = 0; if (rowNumber == 0) { return false; } //建立Excel对象 Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application(); //excel.Application.Workbooks.Add(true); Microsoft.Office.Interop.Excel.Workbook workbook = excel.Workbooks.Add(Microsoft.Office.Interop.Excel.XlWBATemplate.xlWBATWorksheet); Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets[1]; excel.Visible = isShowExcle; //Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)excel.Worksheets[1]; Microsoft.Office.Interop.Excel.Range range; //生成字段名称 foreach (DataColumn col in dataTable.Columns) { colIndex++; excel.Cells[1, colIndex] = col.ColumnName; } object[,] objData = new object[rowNumber, columnNumber]; for (int r = 0; r < rowNumber; r++) { for (int c = 0; c < columnNumber; c++) { objData[r, c] = dataTable.Rows[r][c]; } //Application.DoEvents(); } // 写入Excel range = worksheet.get_Range(excel.Cells[2, 1], excel.Cells[rowNumber + 1, columnNumber]); //range.NumberFormat = "@";//设置单元格为文本格式 range.Value2 = objData; worksheet.get_Range(excel.Cells[2, 1], excel.Cells[rowNumber + 1, 1]).NumberFormat = "yyyy-m-d h:mm"; return true; } //法四 //public bool DataSetToExcel(DataSet dataSet, bool isShowExcle) //{ // DataTable dataTable = dataSet.Tables[0]; // int rowNumber = dataTable.Rows.Count; // int columnNumber = dataTable.Columns.Count; // String stringBuffer = ""; // if (rowNumber == 0) // { // MessageBox.Show("没有任何数据可以导入到Excel文件！"); // return false; // } // //建立Excel对象 // Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application(); // excel.Application.Workbooks.Add(true); // excel.Visible = isShowExcle;//是否打开该Excel文件 // //填充数据 // for (int i = 0; i < rowNumber; i++) // { // for (int j = 0; j < columnNumber; j++) // { // stringBuffer += dataTable.Rows[i].ItemArray[j].ToString(); // if (j < columnNumber - 1) // { // stringBuffer += "\t"; // } // } // stringBuffer += "\n"; // } // Clipboard.Clear(); // Clipboard.SetDataObject(stringBuffer); // ((Microsoft.Office.Interop.Excel.Range)excel.Cells[1, 1]).Select(); // ((Microsoft.Office.Interop.Excel.Worksheet)excel.ActiveWorkbook.ActiveSheet).Paste(Missing.Value, Missing.Value); // Clipboard.Clear(); // return true; //} //public bool DataSetToExcel(DataSet dataSet, string fileName, bool isShowExcle) //{ // DataTable dataTable = dataSet.Tables[0]; // int rowNumber = dataTable.Rows.Count; // int columnNumber = dataTable.Columns.Count; // if (rowNumber == 0) // { // MessageBox.Show("没有任何数据可以导入到Excel文件！"); // return false; // } // //建立Excel对象 // Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application(); // Microsoft.Office.Interop.Excel.Workbook workBook = excel.Application.Workbooks.Add(true); // excel.Visible = false;//是否打开该Excel文件 // //填充数据 // for (int i = 0; i < rowNumber; i++) // { // for (int j = 0; j < columnNumber; j++) // { // excel.Cells[i + 1, j + 1] = dataTable.Rows[i].ItemArray[j]; // } // } // //string fileName = path + "\\" + DateTime.Now.ToString().Replace(':', '_') + ".xls"; // workBook.SaveAs(fileName, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlNoChange, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value); // try // { // workBook.Saved = true; // excel.UserControl = false; // //excelapp.Quit(); // } // catch (Exception exception) // { // MessageBox.Show(exception.Message); // } // finally // { // workBook.Close(Microsoft.Office.Interop.Excel.XlSaveAction.xlSaveChanges, Missing.Value, Missing.Value); // excel.Quit(); // } // if (isShowExcle) // { // System.Diagnostics.Process.Start(fileName); // } // return true; //} //public bool DataSetToExcel(DataSet dataSet, string fileName, bool isShowExcle) //{ // DataTable dataTable = dataSet.Tables[0]; // int rowNumber = dataTable.Rows.Count;//不包括字段名 // int columnNumber = dataTable.Columns.Count; // int colIndex = 0; // if (rowNumber == 0) // { // MessageBox.Show("没有任何数据可以导入到Excel文件！"); // return false; // } // //建立Excel对象 // Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application(); // //excel.Application.Workbooks.Add(true); // Microsoft.Office.Interop.Excel.Workbook workbook = excel.Workbooks.Add(Microsoft.Office.Interop.Excel.XlWBATemplate.xlWBATWorksheet); // Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets[1]; // excel.Visible = isShowExcle; // //Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)excel.Worksheets[1]; // worksheet.Name = "挠度数据"; // Microsoft.Office.Interop.Excel.Range range; // //生成字段名称 // foreach (DataColumn col in dataTable.Columns) // { // colIndex++; // excel.Cells[1, colIndex] = col.ColumnName; // } // object[,] objData = new object[rowNumber, columnNumber]; // for (int r = 0; r < rowNumber; r++) // { // for (int c = 0; c < columnNumber; c++) // { // objData[r, c] = dataTable.Rows[r][c]; // } // //Application.DoEvents(); // } // // 写入Excel // range = worksheet.get_Range(excel.Cells[2, 1], excel.Cells[rowNumber + 1, columnNumber]); // //range.NumberFormat = "@";//设置单元格为文本格式 // range.Value2 = objData; // worksheet.get_Range(excel.Cells[2, 1], excel.Cells[rowNumber + 1, 1]).NumberFormat = "yyyy-m-d h:mm"; // //string fileName = path + "\\" + DateTime.Now.ToString().Replace(':', '_') + ".xls"; // workbook.SaveAs(fileName, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlNoChange, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value); // try // { // workbook.Saved = true; // excel.UserControl = false; // //excelapp.Quit(); // } // catch (Exception exception) // { // MessageBox.Show(exception.Message); // } // finally // { // workbook.Close(Microsoft.Office.Interop.Excel.XlSaveAction.xlSaveChanges, Missing.Value, Missing.Value); // excel.Quit(); // } // //if (isShowExcle) // //{ // // System.Diagnostics.Process.Start(fileName); // //} // return true; //} /// <summary> /// 将数据集中的数据保存到EXCEL文件 /// </summary> /// <param name="dataSet">输入数据集</param> /// <param name="fileName">保存EXCEL文件的绝对路径名</param> /// <param name="isShowExcle">是否打开EXCEL文件</param> /// <returns></returns> public bool DataSetToExcel(DataSet dataSet, string fileName, bool isShowExcle) { DataTable dataTable = dataSet.Tables[0]; int rowNumber = dataTable.Rows.Count;//不包括字段名 int columnNumber = dataTable.Columns.Count; int colIndex = 0; if (rowNumber == 0) { MessageBox.Show("没有任何数据可以导入到Excel文件！"); return false; } //建立Excel对象 Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application(); //excel.Application.Workbooks.Add(true); Microsoft.Office.Interop.Excel.Workbook workbook = excel.Workbooks.Add(Microsoft.Office.Interop.Excel.XlWBATemplate.xlWBATWorksheet); Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets[1]; excel.Visible = false; //Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)excel.Worksheets[1]; Microsoft.Office.Interop.Excel.Range range; //生成字段名称 foreach (DataColumn col in dataTable.Columns) { colIndex++; excel.Cells[1, colIndex] = col.ColumnName; } object[,] objData = new object[rowNumber, columnNumber]; for (int r = 0; r < rowNumber; r++) { for (int c = 0; c < columnNumber; c++) { objData[r, c] = dataTable.Rows[r][c]; } //Application.DoEvents(); } // 写入Excel range = worksheet.get_Range(excel.Cells[2, 1], excel.Cells[rowNumber + 1, columnNumber]); //range.NumberFormat = "@";//设置单元格为文本格式 range.Value2 = objData; worksheet.get_Range(excel.Cells[2, 1], excel.Cells[rowNumber + 1, 1]).NumberFormat = "yyyy-m-d h:mm"; //string fileName = path + "\\" + DateTime.Now.ToString().Replace(':', '_') + ".xls"; workbook.SaveAs(fileName, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlNoChange, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value); try { workbook.Saved = true; excel.UserControl = false; //excelapp.Quit(); } catch (Exception exception) { MessageBox.Show(exception.Message); } finally { workbook.Close(Microsoft.Office.Interop.Excel.XlSaveAction.xlSaveChanges, Missing.Value, Missing.Value); excel.Quit(); } if (isShowExcle) { System.Diagnostics.Process.Start(fileName); } return true; } } }

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