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[NET][C#]操作Excel，套用模板并对数据进行分页
using System;
using System.IO;
using System.Data;
using System.Reflection;
using System.Diagnostics;
using cfg = System.Configuration;
using Excel;
namespace ExcelHelperTest
{
/**/ /// <summary>
/// 功能说明：套用模板输出Excel，并对数据进行分页
/// 作 者：Lingyun_k
/// 创建日期：2005-7-12
/// </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"> 行索引 </param>
/// <param name="left"> 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(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
Excel.Workbook workBook = app.Workbooks.Open(templetFile,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[i]);
}
将源DataTable数据写入Excel #region 将源DataTable数据写入Excel
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
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 " ;
}
#endregion
// 输出Excel文件并退出
try
{
workBook.SaveAs(outputFile,missing,missing,missing,missing,missing,Excel.XlSaveAsAccessMode.xlExclusive,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;
else
return Convert.ToInt32(rowCount / rows) + 1 ;
}
/**/ /// <summary>
/// 将二维数组数据写入Excel文件（套用模板并分页）
/// </summary>
/// <param name="arr"> 二维数组 </param>
/// <param name="rows"> 每个WorkSheet写入多少行数据 </param>
/// <param name="top"> 行索引 </param>
/// <param name="left"> 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 ArrayToExcel( string [,] arr, int rows, int top, int left, string sheetPrefixName)
{
int rowCount = arr.GetLength( 0 ); // 二维数组行数（一维长度）
int colCount = arr.GetLength( 1 ); // 二维数据列数（二维长度）
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
Excel.Workbook workBook = app.Workbooks.Open(templetFile,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[i]);
}
将二维数组数据写入Excel #region 将二维数组数据写入Excel
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();
// 将二维数组中的数据写入WorkSheet
for ( int j = 0 ;j < endRow - startRow;j ++ )
{
for ( int k = 0 ;k < colCount;k ++ )
{
sheet.Cells[top + j,left + k] = arr[startRow + j,k];
}
}
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 " ;
}
#endregion
// 输出Excel文件并退出
try
{
workBook.SaveAs(outputFile,missing,missing,missing,missing,missing,Excel.XlSaveAsAccessMode.xlExclusive,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();
}
}
}
}
}
}
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