C#合并多个结构一样的Excel

合并代码如下：

using System;
using System.Collections.Generic;
using System.Text;
using System.Reflection;
using Excel = Microsoft.Office.Interop.Excel;
namespace ConsoleApplication20
{
//添加引用-COM-MicroSoft Excel 11.0 Object Libery
class Program
{
static void Main(string[] args)
{
//M为表格宽度标志（Excel中的第M列为最后一列），3为表头高度
MergeExcel.DoMerge(new string[]
{
@"E:/excel/类型A/公司A.xls",
@"E:/excel/类型A/公司B.xls"
},
@"E:/excel/类型A/合并测试.xls", "M", 3);
MergeExcel.DoMerge(new string[]
{
@"E:/excel/类型B/统计表A.xls",
@"E:/excel/类型B/统计表B.xls"
},
@"E:/excel/类型B/合并测试.xls", "I", 4);
}




}
public class MergeExcel
{

Excel.Application app = new Microsoft.Office.Interop.Excel.ApplicationClass();
//保存目标的对象
Excel.Workbook bookDest = null;
Excel.Worksheet sheetDest = null;
//读取数据的对象
Excel.Workbook bookSource = null;
Excel.Worksheet sheetSource = null;

string[] _sourceFiles = null;
string _destFile = string.Empty;
string _columnEnd = string.Empty;
int _headerRowCount = 1;
int _currentRowCount = 0;

public MergeExcel(string[] sourceFiles,string destFile,string columnEnd,int headerRowCount)
{

bookDest = (Excel.WorkbookClass)app.Workbooks.Add(Missing.Value);
sheetDest = bookDest.Worksheets.Add(Missing.Value, Missing.Value, Missing.Value, Missing.Value) as Excel.Worksheet;
sheetDest.Name = "Data";

_sourceFiles = sourceFiles;
_destFile = destFile;
_columnEnd = columnEnd;
_headerRowCount = headerRowCount;

}
///
/// 打开工作表
///
///
void OpenBook(string fileName)
{
bookSource = app.Workbooks._Open(fileName, Missing.Value, Missing.Value, Missing.Value, Missing.Value
, Missing.Value, Missing.Value, Missing.Value, Missing.Value
, Missing.Value, Missing.Value, Missing.Value, Missing.Value);
sheetSource = bookSource.Worksheets[1] as Excel.Worksheet;
}
///
/// 关闭工作表
///
void CloseBook()
{
bookSource.Close(false, Missing.Value, Missing.Value);
}
///
/// 复制表头
///
void CopyHeader()
{
Excel.Range range = sheetSource.get_Range("A1", _columnEnd + _headerRowCount.ToString());
range.Copy(sheetDest.get_Range("A1",Missing.Value));
_currentRowCount += _headerRowCount;
}
///
/// 复制数据
///
void CopyData()
{
int sheetRowCount = sheetSource.UsedRange.Rows.Count;
Excel.Range range = sheetSource.get_Range(string.Format("A{0}", _headerRowCount + 1), _columnEnd + sheetRowCount.ToString());
range.Copy(sheetDest.get_Range(string.Format("A{0}", _currentRowCount + 1), Missing.Value));
_currentRowCount += range.Rows.Count;
}
///
/// 保存结果
///
void Save()
{
bookDest.Saved = true;
bookDest.SaveCopyAs(_destFile);
}
///
/// 退出进程
///
void Quit()
{
app.Quit();
}
///
/// 合并
///
void DoMerge()
{
bool b = false;
foreach (string strFile in _sourceFiles)
{
OpenBook(strFile);
if (b == false)
{
CopyHeader();
b = true;
}
CopyData();
CloseBook();
}
Save();
Quit();
}
///
/// 合并表格
///
/// 源文件
/// 目标文件
/// 最后一列标志
/// 表头行数
public static void DoMerge(string[] sourceFiles, string destFile, string columnEnd, int headerRowCount)
{
new MergeExcel(sourceFiles, destFile, columnEnd, headerRowCount).DoMerge();
}
}

}