C#向Excel报表中插入图片的2种方法

红太狼 2022-05-16 07:17 254阅读 0赞

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：**

using System;
    using System.Collections.Generic;
    using System.Text;
    using Excel = Microsoft.Office.Interop.Excel;
    //using Excel;
    //using System.Windows.Forms;
    
    namespace ExcelReport
    {
        public class InsertPicToExcel
        {
            /** <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)
             {
                 try
                 {
                     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);
                 }
                 catch (Exception ex)
                 {
    
                     throw new Exception(ex.Message);
                 }
                 
             
             }
    
             /** <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
    
                    //   注意：使用之前需要引用COM：Microsoft Office 15.0 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
    
                 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)
            {
                try 
                {
                    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();
                }
                catch (Exception ex)
                {
                    throw new Exception(ex.Message);
                }
                
            }
            /** <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;
        
        }
    }

调用:

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();

来源：[https://blog.csdn.net/net\_lover/article/details/1702797][https_blog.csdn.net_net_lover_article_details_1702797]

[https_blog.csdn.net_net_lover_article_details_1702797]: https://blog.csdn.net/net_lover/article/details/1702797