[导入]C#向Excel报表中插入图片的2种方法

如果使用Excel2003，需要添加.NET库的Microsoft.Office.Interop.Excel 版本11.0，引用栏会出现Microsoft.Office.Interop.Excel
然后添加COM库，Microsoft Office 11.0 Object Library，引用栏中会出现Microsoft.Office.Core
另外如果添加 C:\Program Files\Microsoft Office\OFFICE11\EXCEL.EXE，则引用栏中会出现Excel和Microsoft.Office.Core

调用方法

MengXianhui.Utility.ExcelReport.InsertPictureToExcel ipt = new MengXianhui.Utility.ExcelReport.InsertPictureToExcel();

ipt.Open();

ipt.InsertPicture("B2", @"C:\Excellogo.gif");

ipt.InsertPicture("B8", @"C:\Excellogo.gif",120,80);

ipt.SaveFile(@"C:\ExcelTest.xls");

ipt.Dispose();

简单包装的类
using System;using System.Windows.Forms;using Excel = Microsoft.Office.Interop.Excel;namespace MengXianhui.Utility.ExcelReport{  class InsertPictureToExcel  {    /// <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;  }}
运行结果