C#向Excel报表中插入图片的2种方法【转】
这几天做向Excel插入数据，其中有插入图片的需求，经试验，下面2种方法都可以插入图片，但各有不同的用处。现将这2种方法共享出来， 希望需要的朋友进行参考，代码中已经有详细注释了。
注意：使用之前需要引用COM：Microsoft Office 11.0 Object Library 如果引用列表中没有，需要自行添加 C:\Program Files\Microsoft Office\OFFICE11\EXCEL.EXE
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; } }
