套用模板输出Excel，并对数据进行分页
2009-08-26 17:01
引用：通过Com 引用 Microsoft Excel 5.0 对象程序库，引用后 bin 文件夹中会出现 Interop.Excel.dll ，Microsoft.Vbe.Interop.dll ， Office.dll 三个文件。//=====================ExcelHelper（套用模板输出Excel，并对数据进行分页）==============
using System;using System.IO;using System.Data;using System.Reflection;using System.Diagnostics;using cfg = System.Configuration;using Excel;
namespace ExcelHelper{/// <summary> /// 功能说明：套用模板输出Excel，并对数据进行分页/// </summary> public class ExcelHelper{protected string templetFile = null;protected string outputFile = null;protected object missing = Missing.Value;
/// <summary> /// 构造函数，需指定模板文件和输出文件完整路径/// </summary> /// <param name="templetFilePath"> Excel模板文件路径 </param> /// <param name="outputFilePath"> 输出Excel文件路径 </param> public ExcelHelper(string templetFilePath, string outputFilePath){if (templetFilePath == null)throw new Exception(" Excel模板文件路径不能为空！ ");
if (outputFilePath == null)throw new Exception(" 输出Excel文件路径不能为空！ ");
if (!File.Exists(templetFilePath))throw new Exception(" 指定路径的Excel模板文件不存在！ ");
this.templetFile = templetFilePath;this.outputFile = outputFilePath;
}
/**//// <summary> /// 将DataTable数据写入Excel文件（套用模板并分页）/// </summary> /// <param name="dt"> DataTable </param> /// <param name="rows"> 每个WorkSheet写入多少行数据 </param> /// <param name="top"> Excel中行索引 </param> /// <param name="left"> Excel中列索引 </param> /// <param name="sheetPrefixName"> WorkSheet前缀名，比如：前缀名为“Sheet”，那么WorkSheet名称依次为“Sheet-1，Sheet-2” </param> public void DataTableToExcel(System.Data.DataTable dt, int rows, int top, int left, string sheetPrefixName){int rowCount = dt.Rows.Count; // 源DataTable行数 int colCount = dt.Columns.Count; // 源DataTable列数 int sheetCount = this.GetSheetCount(rowCount, rows); // WorkSheet个数 DateTime beforeTime;DateTime afterTime;
if (sheetPrefixName == null || sheetPrefixName.Trim() == "")sheetPrefixName = " Sheet ";
// 创建一个Application对象并使其可见 beforeTime = DateTime.Now;Excel.Application app = new Excel.ApplicationClass();app.Visible = true;afterTime = DateTime.Now;
// 打开模板文件，得到WorkBook对象 （网上都是13个参数，现在变成14个参数了）Excel.Workbook workBook = app.Workbooks.Open(templetFile, missing, missing, missing, missing, missing,missing, missing, missing, missing, missing, missing, missing, missing, missing);
// 得到WorkSheet对象 Excel.Worksheet workSheet = (Excel.Worksheet)workBook.Sheets.get_Item(1);
// 复制sheetCount-1个WorkSheet对象 for (int i = 1; i < sheetCount; i++){((Excel.Worksheet)workBook.Worksheets.get_Item(i)).Copy(missing, workBook.Worksheets);}
for (int i = 1; i <= sheetCount; i++){int startRow = (i - 1) * rows; // 记录起始行索引 int endRow = i * rows; // 记录结束行索引
// 若是最后一个WorkSheet，那么记录结束行索引为源DataTable行数 if (i == sheetCount)endRow = rowCount;
// 获取要写入数据的WorkSheet对象，并重命名 Excel.Worksheet sheet = (Excel.Worksheet)workBook.Worksheets.get_Item(i);sheet.Name = sheetPrefixName + " - " + i.ToString();
// 将dt中的数据写入WorkSheet for (int j = 0; j < endRow - startRow; j++){for (int k = 0; k < colCount; k++){sheet.Cells[top + j, left + k] = dt.Rows[startRow + j][k].ToString();}}
====================写文本框数据（有错误注释掉了）============= //Excel.TextBox txtAuthor = (Excel.TextBox)sheet.TextBoxes(" txtAuthor ");//Excel.TextBox txtDate = (Excel.TextBox)sheet.TextBoxes(" txtDate ");//Excel.TextBox txtVersion = (Excel.TextBox)sheet.TextBoxes(" txtVersion ");
//txtAuthor.Text = " KLY.NET的Blog ";//txtDate.Text = DateTime.Now.ToShortDateString();//txtVersion.Text = " 1.0.0.0 ";
sheet.Cells[rows + 1, left + 1] = "总计：10000";sheet.Cells[rows + 1, left + 5] = "编码：10000";
}
// 输出Excel文件并退出 try{
//（网上是11个参数，现在是12个参数）workBook.SaveAs(outputFile, missing, missing, missing, missing, missing, Excel.XlSaveAsAccessMode.xlExclusive, missing, missing, missing, missing, missing);workBook.Close(null, null, null);app.Workbooks.Close();app.Application.Quit();app.Quit();
System.Runtime.InteropServices.Marshal.ReleaseComObject(workSheet);System.Runtime.InteropServices.Marshal.ReleaseComObject(workBook);System.Runtime.InteropServices.Marshal.ReleaseComObject(app);
workSheet = null;workBook = null;app = null;
GC.Collect();}catch (Exception e){throw e;}finally{Process[] myProcesses;DateTime startTime;myProcesses = Process.GetProcessesByName(" Excel ");
// 得不到Excel进程ID，暂时只能判断进程启动时间 foreach (Process myProcess in myProcesses){startTime = myProcess.StartTime;
if (startTime > beforeTime && startTime < afterTime){myProcess.Kill();}}}
}
/**//// <summary> /// 获取WorkSheet数量/// </summary> /// <param name="rowCount"> 记录总行数 </param> /// <param name="rows"> 每WorkSheet行数 </param> private int GetSheetCount(int rowCount, int rows){int n = rowCount % rows; // 余数
if (n == 0)return rowCount / rows;elsereturn Convert.ToInt32(rowCount / rows) + 1;}}}
使用示例：
public partial class _Default : System.Web.UI.Page {
ExcelHelper.ExcelHelper excel =null;
protected void Page_Load(object sender, EventArgs e){excel = new ExcelHelper.ExcelHelper(Server.MapPath("tempt/BJStock.xls"), Server.MapPath("ExcelFile/test.xls"));}
protected void Button1_Click(object sender, EventArgs e){excel.DataTableToExcel(DbHelperSQL.DbHelperSQL.GetDataTable("select * from excel"), 2, 1, 1, "Sheet");Response.Redirect("ExcelFile/test.xls");}}
