using System; using System.Collections; using System.Collections.Generic; using System.Data; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using Microsoft.Office.Interop.Excel; using System.Windows.Forms; public partial class OutExce : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { DataTabletoExcel(createTable(),"asdsadsadasw"); } public Microsoft.Office.Interop.Excel.Application m_xlApp = null; /// <summary> /// 将DataTable数据导出到Excel表 /// </summary> /// <param name="tmpDataTable">要导出的DataTable</param> /// <param name="strFileName">Excel的保存路径及名称</param> public void DataTabletoExcel(System.Data.DataTable tmpDataTable, string strFileName) { if (tmpDataTable == null) { return; } long rowNum = tmpDataTable.Rows.Count;//行数 int columnNum = tmpDataTable.Columns.Count;//列数 Microsoft.Office.Interop.Excel.Application m_xlApp = new Microsoft.Office.Interop.Excel.Application(); m_xlApp.DisplayAlerts = false;//不显示更改提示 m_xlApp.Visible = false; Microsoft.Office.Interop.Excel.Workbooks workbooks = m_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 try { if (rowNum > 65536)//单张Excel表格最大行数 { long pageRows = 65535;//定义每页显示的行数,行数必须小于65536 int scount = (int)(rowNum / pageRows);//导出数据生成的表单数 if (scount * pageRows < rowNum)//当总行数不被pageRows整除时，经过四舍五入可能页数不准 { scount = scount + 1; } for (int sc = 1; sc <= scount; sc++) { if (sc > 1) { object missing = System.Reflection.Missing.Value; worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets.Add( missing, missing, missing, missing);//添加一个sheet } else { worksheet = (Microsoft.Office.Interop.Excel.Worksheet)workbook.Worksheets[sc];//取得sheet1 } string[,] datas = new string[pageRows + 1, columnNum]; for (int i = 0; i < columnNum; i++) //写入字段 { datas[0, i] = tmpDataTable.Columns[i].Caption;//表头信息 } Microsoft.Office.Interop.Excel.Range range = worksheet.get_Range(worksheet.Cells[1, 1], worksheet.Cells[1, columnNum]); range.Interior.ColorIndex = 15;//15代表灰色 range.Font.Bold = true; range.Font.Size = 9; int init = int.Parse(((sc - 1) * pageRows).ToString()); int r = 0; int index = 0; int result; if (pageRows * sc >= rowNum) { result = (int)rowNum; } else { result = int.Parse((pageRows * sc).ToString()); } for (r = init; r < result; r++) { index = index + 1; for (int i = 0; i < columnNum; i++) { object obj = tmpDataTable.Rows[r][tmpDataTable.Columns[i].ToString()]; datas[index, i] = obj == null ? "" : "'" + obj.ToString().Trim();//在obj.ToString()前加单引号是为了防止自动转化格式 } System.Windows.Forms.Application.DoEvents(); //添加进度条 } Microsoft.Office.Interop.Excel.Range fchR = worksheet.get_Range(worksheet.Cells[1, 1], worksheet.Cells[index + 1, columnNum]); fchR.Value2 = datas; worksheet.Columns.EntireColumn.AutoFit();//列宽自适应。 m_xlApp.WindowState = Microsoft.Office.Interop.Excel.XlWindowState.xlMaximized;//Sheet表最大化 range = worksheet.get_Range(worksheet.Cells[1, 1], worksheet.Cells[index + 1, columnNum]); //range.Interior.ColorIndex = 15;//15代表灰色 range.Font.Size = 9; range.RowHeight = 14.25; range.Borders.LineStyle = 1; range.HorizontalAlignment = 1; } } else { string[,] datas = new string[rowNum + 1, columnNum]; for (int i = 0; i < columnNum; i++) //写入字段 { datas[0, i] = tmpDataTable.Columns[i].Caption; } Microsoft.Office.Interop.Excel.Range range = worksheet.get_Range(worksheet.Cells[1, 1], worksheet.Cells[1, columnNum]); range.Interior.ColorIndex = 15;//15代表灰色 range.Font.Bold = true; range.Font.Size = 9; int r = 0; for (r = 0; r < rowNum; r++) { for (int i = 0; i < columnNum; i++) { object obj = tmpDataTable.Rows[r][tmpDataTable.Columns[i].ToString()]; datas[r + 1, i] = obj == null ? "" : "'" + obj.ToString().Trim();//在obj.ToString()前加单引号是为了防止自动转化格式 } System.Windows.Forms.Application.DoEvents(); //添加进度条 } Microsoft.Office.Interop.Excel.Range fchR = worksheet.get_Range(worksheet.Cells[1, 1], worksheet.Cells[rowNum + 1, columnNum]); fchR.Value2 = datas; worksheet.Columns.EntireColumn.AutoFit();//列宽自适应。 m_xlApp.WindowState = Microsoft.Office.Interop.Excel.XlWindowState.xlMaximized; range = worksheet.get_Range(worksheet.Cells[1, 1], worksheet.Cells[rowNum + 1, columnNum]); //range.Interior.ColorIndex = 15;//15代表灰色 range.Font.Size = 9; range.RowHeight = 14.25; range.Borders.LineStyle = 1; range.HorizontalAlignment = 1; } workbook.Saved = true; workbook.SaveCopyAs(strFileName); } catch (Exception ex) { MessageBox.Show("导出异常：" + ex.Message, "导出异常", MessageBoxButtons.OK, MessageBoxIcon.Warning); } finally { EndReport(); } } /// <summary> /// 退出报表时关闭Excel和清理垃圾Excel进程 /// </summary> private void EndReport() { object missing = System.Reflection.Missing.Value; try { m_xlApp.Workbooks.Close(); m_xlApp.Workbooks.Application.Quit(); m_xlApp.Application.Quit(); m_xlApp.Quit(); } catch { } finally { try { System.Runtime.InteropServices.Marshal.ReleaseComObject(m_xlApp.Workbooks); System.Runtime.InteropServices.Marshal.ReleaseComObject(m_xlApp.Application); System.Runtime.InteropServices.Marshal.ReleaseComObject(m_xlApp); m_xlApp = null; } catch { } try { //清理垃圾进程 this.killProcessThread(); } catch { } GC.Collect(); } } /// <summary> /// 杀掉不死进程 /// </summary> private void killProcessThread() { ArrayList myProcess = new ArrayList(); for (int i = 0; i < myProcess.Count; i++) { try { System.Diagnostics.Process.GetProcessById(int.Parse((string)myProcess[i])).Kill(); } catch { } } } public System.Data.DataTable createTable() { DataSet ds = new DataSet(); using (System.Data.DataTable dt = new System.Data.DataTable("students")) { //创建列 DataColumn dtc = new DataColumn("姓名", typeof(string)); dt.Columns.Add(dtc); dtc = new DataColumn("性别", typeof(string)); dt.Columns.Add(dtc); dtc = new DataColumn("电话", typeof(Int32)); dt.Columns.Add(dtc); //添加数据到DataTable DataRow dr = dt.NewRow(); dr["姓名"] = "张三"; dr["性别"] = "男"; dr["电话"] = 54531; dt.Rows.Add(dr); dr = dt.NewRow(); dr["姓名"] = "李四"; dr["性别"] = "男"; dr["电话"] = 5731; dt.Rows.Add(dr); dr = dt.NewRow(); dr["姓名"] = "王五"; dr["电话"] = 5868451; dr["性别"] = "女"; dt.Rows.Add(dr); ds.Tables.Add(dt); } return ds.Tables[0]; } }