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;
  }
}

运行结果：

关键字：C#报表 EXCEL 插入图片