C#读写Excel

网上找了很多方法，都没有突出重点，着急着用，快速总结一下，把重点部分突出。
读： ws.get_Range( " A1 " , Type.Missing);
写：ws.Cells[ 1,  1] =  " 修改的内容 ";

 
  using System; 
  
 
  using System.Collections.Generic; 
  
 
  using System.ComponentModel; 
  
 
  using System.Data; 
  
 
  using System.Drawing; 
  
 
  using System.Linq; 
  
 
  using System.Text; 
  
 
  using System.Windows.Forms; 
  
 
  
 
  using System.Collections; 
  
 
  using System.IO; 
  
 
  using System.Reflection; 
  
 
  using MSExcel = Microsoft.Office.Interop.Excel; 
  
 
  
 
  namespace ExcelTool 
  
 { 
  
      
  public  
  partial  
  class FrmMain : Form 
  
     { 
  
          
  string str =  
  @" 
  C:\Program Files\Data\SpaceKeyword.xlsx 
  "; 
  
          
  object missing = Missing.Value; 
  
         MSExcel.Application app =  
  null; 
  
         MSExcel.Workbook wb =  
  null; 
  
         MSExcel.Worksheet ws =  
  null; 
  
         MSExcel.Range r =  
  null; 
  
          
  /// 
    
  <summary> 
  
          
  /// 
   加载Excel
          
  /// 
    
  </summary> 
  
          
  private  
  void InitExcel() 
  
         {  
  
              
  // 
  打开excel 
  
             app =  
  new Microsoft.Office.Interop.Excel.Application(); 
  
             wb = app.Workbooks.Open(str,  
  false, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing); 
  
             app.Visible =  
  false; 
  // 
  读Excel不显示出来影响用户体验
 
              
  // 
  得到WorkSheet对象 
  
             ws = (MSExcel.Worksheet)wb.Worksheets.get_Item( 
  1); 
  
         } 
  
          
  /// 
    
  <summary> 
  
          
  /// 
   读取Excel中的内容
          
  /// 
    
  </summary> 
  
          
  private  
  void ReadExcel() 
  
         { 
  
             InitExcel(); 
  
              
  // 
  读取A1单元格内容 
  
             r = ws.get_Range( 
  " 
  A1 
  ", Type.Missing); 
  
              
  string strA1 = r.Value; 
  
             app.Quit(); 
  // 
  退出 
  
             MessageBox.Show(strA1); 
  
         } 
  
          
  /// 
    
  <summary> 
  
          
  /// 
   写入Excel(Win7下要以管理员身份运行才能修改)
          
  /// 
    
  </summary> 
  
          
  private  
  void WriteExcel() 
  
         { 
  
             InitExcel(); 
  
             ws.Cells[ 
  1,  
  1] =  
  " 
  修改的内容 
  "; 
  
              
  // 
  保存Excel 
  
             wb.Save(); 
  
             wb.Close( 
  null,  
  null,  
  null); 
  
             app.Workbooks.Close(); 
  
             app.Application.Quit(); 
  
             app.Quit(); 
  
 
  
             System.Runtime.InteropServices.Marshal.ReleaseComObject(ws); 
  
             System.Runtime.InteropServices.Marshal.ReleaseComObject(wb); 
  
             System.Runtime.InteropServices.Marshal.ReleaseComObject(app); 
  
 
  
             ws =  
  null; 
  
             wb =  
  null; 
  
             app =  
  null; 
  
         } 
  
     } 
  
 } 
 

参考： http://greatverve.cnblogs.com/archive/2010/08/19/csharp-excel.html

以下是一些对excel的一些基本操作
1:工程对excel类库的导入,如：c:\program files\Microsoft office\offiece11\excel.exe
2:命名控件的引入: using Microsoft.office.Interop.Excel;
3:如果是对一个已经存在的excel文件进行操作则：

Application app=new Application();
Workbook wbook=app.Workbooks.Open("c:\\temp.xls",Type.Missing,Type.missing,Type.missing,Type.missing,Type.missing,Type.missing,Type.missing,Type.missing,Type.missing,Type.missing,Type.missing,Type.missing,Type.missing,Type.missing);

Worksheet worksheet=(Worksheet)wbook.Worksheets[1];

4:如果是新建一个excel文件:
Application app=new Application();
Workbook wbook=app.Workbook.Add(Type.missing);
Worksheet worksheet=(Worksheet)wbook.Worksheets[1];

5:设置某个单元格里的内容:
worksheet.Cells[1,2]="列内容"

6读取某个单元格里的内容
string temp=((Range)worksheet.Cells[1,2]).Text;

7设置某个单元格里的格式
Excel.Range rtemp=worksheet.get_Range("A1","A1");
rtemp.Font.Name="宋体";
rtemp.Font.FontStyle="加粗"；
rtemp.Font.Size=5;

8 保存新建的内容:
worksheet.SaveAs("c:\\temp.xls",Type.missing,Type.missing,Type.missing,Type.missing,Type.missing,Type.missing,Type.missing,Type.missing);

url: http://greatverve.cnblogs.com/archive/2012/01/31/csharp-read-write-excel.html