引用COM：Microsoft Office 11.0 Object Library

引用类： 
   using System; 
   using System.Windows.Forms; 
   using Excel = Microsoft.Office.Interop.Excel;

调用：

private void button1_Click(objectsender, EventArgse) 
       { 
           PictureToExcel ipt=new PictureToExcel(); 
           ipt.Open(); 
          // ipt.InsertPicture("B2", @"C:\Pic.jpg"); 
          ipt.InsertPicture("B8", @"C:\Pic.jpg", 80, 100);        
           ipt.SaveFile(@"C:\ExcelTest.xls"); 
           ipt.Dispose();      
       }

PictureToExcel.cs

using System;
using System.Collections.Generic;
using System.Text;

using System.Windows.Forms;
using Excel; 

namespace ImgToExcel
{
    class PictureToExcel
    {
       
         /// <summary>       
         ///打开没有模板的操作。  
         /// </summary>    
         public void Open( )   
         {
             this.Open(String.Empty); 
         }  



         /// <summary>   
         /// 功能：实现Excel应用程序的打开   
         /// </summary>   
         /// <param name="TemplateFilePath">模板文件物理路径</param>   
         public void Open( string TemplateFilePath )   
         {
             //打开对象
             m_objExcel = new Excel.Application(); 
             m_objExcel.Visible = false;
             m_objExcel.DisplayAlerts = false;  
             if (m_objExcel.Version != "11.0") 
             {
                 MessageBox.Show("您的Excel 版本不是11.0 （Office 2003），操作可能会出现问题。");
                 m_objExcel.Quit(); 
                 return; 
             } 
             m_objBooks = (Excel.Workbooks)m_objExcel.Workbooks; 
             if (TemplateFilePath.Equals(String.Empty))  
             {  
                 m_objBook = (Excel._Workbook)(m_objBooks.Add(m_objOpt));  
             } 
             else 
             {   
                 m_objBook = m_objBooks.Open(TemplateFilePath, m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt); 
             } 
             m_objSheets = (Excel.Sheets)m_objBook.Worksheets;
             m_objSheet = (Excel._Worksheet)(m_objSheets.get_Item(1)); 
             m_objExcel.WorkbookBeforeClose += new Excel.AppEvents_WorkbookBeforeCloseEventHandler(m_objExcel_WorkbookBeforeClose); 
         } 


        private void m_objExcel_WorkbookBeforeClose( Excel.Workbook m_objBooks, ref bool _Cancel )
        {  
            MessageBox.Show("保存完毕！"); 
        } 



         /// <summary>  
         /// 将图片插入到指定的单元格位置。  
         /// 注意：图片必须是绝对物理路径    /// </summary>  
         /// <param name="RangeName">单元格名称，例如：B4</param>  
         /// <param name="PicturePath">要插入图片的绝对路径。</param> 
         public void InsertPicture( string RangeName, string PicturePath )  
         {
             m_objRange = m_objSheet.get_Range(RangeName, m_objOpt);
             m_objRange.Select();
             Excel.Pictures pics = (Excel.Pictures)m_objSheet.Pictures(m_objOpt);
             pics.Insert(PicturePath, m_objOpt);
         } 



         /// <summary> 
         /// 将图片插入到指定的单元格位置，并设置图片的宽度和高度。
         /// 注意：图片必须是绝对物理路径    
         /// </summary>   
         /// <param name="RangeName">单元格名称，例如：B4</param>  
         /// <param name="PicturePath">要插入图片的绝对路径。</param>  
         /// <param name="PictuteWidth">插入后，图片在Excel中显示的宽度。</param>    
         /// <param name="PictureHeight">插入后，图片在Excel中显示的高度。</param>    
         public void InsertPicture( string RangeName, string PicturePath, float PictuteWidth, float PictureHeight )   
         {
             m_objRange = m_objSheet.get_Range(RangeName, m_objOpt);
             m_objRange.Select(); 
             float PicLeft, PicTop;
             PicLeft = Convert.ToSingle(m_objRange.Left);
             PicTop = Convert.ToSingle(m_objRange.Top);   
             //参数含义： 
             //图片路径  
             //是否链接到文件 
             //图片插入时是否随文档一起保存  
             //图片在文档中的坐标位置（单位：points） 
             //图片显示的宽度和高度（单位：points） 
             //参数详细信息参见：http://msdn2.microsoft.com/zh-cn/library/aa221765(office.11).aspx  
             m_objSheet.Shapes.AddPicture(PicturePath, Microsoft.Office.Core.MsoTriState.msoFalse, Microsoft.Office.Core.MsoTriState.msoTrue, PicLeft, PicTop, PictuteWidth, PictureHeight);  
         } 




         /// <summary>  
         /// 将Excel文件保存到指定的目录，目录必须事先存在，文件名称不一定要存在。
         /// </summary>     /// <param name="OutputFilePath">要保存成的文件的全路径。</param>  
         public void SaveFile( string OutputFilePath ) 
         { 
             m_objBook.SaveAs(OutputFilePath, m_objOpt, m_objOpt,m_objOpt, m_objOpt, m_objOpt, Excel.XlSaveAsAccessMode.xlNoChange, m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt); 
             this.Close(); 
         }  



         /// <summary>   
         /// 关闭应用程序
         /// </summary>   
         private void Close( )   
         { 
              m_objBook.Close(false, m_objOpt, m_objOpt);
              m_objExcel.Quit(); 
         }  



         /// <summary>  
         /// 释放所引用的COM对象。注意：这个过程一定要执行。
         /// </summary>   
         public void Dispose( )   
         { 
              ReleaseObj(m_objSheets);
              ReleaseObj(m_objBook);
              ReleaseObj(m_objBooks);
              ReleaseObj(m_objExcel);
              System.GC.Collect(); 
              System.GC.WaitForPendingFinalizers();  
         } 



        /// <summary> 
        /// /// 释放对象，内部调用
        /// /// </summary> 
        /// /// <param name="o"></param> 
         
            private void ReleaseObj( object o )
            {
                try
                {
                    System.Runtime.InteropServices.Marshal.ReleaseComObject(o);
                    
                }
                catch { }  
                    
                finally
                {
                    o = null;
                }
            }


            private Excel.Application m_objExcel = null;
            private Excel.Workbooks m_objBooks = null;
            private Excel._Workbook m_objBook = null;
            private Excel.Sheets m_objSheets = null;
            private Excel._Worksheet m_objSheet = null;
            private Excel.Range m_objRange = null;
            private object m_objOpt = System.Reflection.Missing.Value; 

     
        }
    
}