C#向Excel报表中插入图片的2种方法_[Asp.Net教程]
使用之前需要引用COM：Microsoft Office 11.0 Object Library 和 Microsoft Excel 11.0 Object Library
简单包装的类：加入App_Code 内
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using Excel = Microsoft.Office.Interop.Excel;
/**////
/// InsertPictureToExcel 的摘要说明
///
public class InsertPictureToExcel
{
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;
/**////
/// 打开没有模板的操作。
///
public void Open()
{
this.Open(String.Empty);
}
/**////
/// 功能：实现Excel应用程序的打开
///
/// 模板文件物理路径
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！");
}
/**////
/// 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
///
/// 单元格名称，例如：B4
/// 要插入图片的绝对路径。
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);
}
/**////
/// 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
///
/// 单元格名称，例如：B4
/// 要插入图片的绝对路径。
/// 插入后，图片在Excel中显示的宽度。
/// 插入后，图片在Excel中显示的高度。
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);
}
/**////
/// 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。
///
/// 要保存成的文件的全路径。
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();
}
/**////
/// 关闭应用程序
///
private void Close()
{
m_objBook.Close(false, m_objOpt, m_objOpt);
m_objExcel.Quit();
}
/**////
/// 释放所引用的COM对象。注意：这个过程一定要执行。
///
public void Dispose()
{
ReleaseObj(m_objSheets);
ReleaseObj(m_objBook);
ReleaseObj(m_objBooks);
ReleaseObj(m_objExcel);
System.GC.Collect();
System.GC.WaitForPendingFinalizers();
}
/**////
/// 释放对象，内部调用
///
///
private void ReleaseObj(object o)
{
try
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(o);
}
catch { }
finally { o = null; }
}
}
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default7.aspx.cs" Inherits="Default7" %>
无标题页 using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class Default7 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
string picPath1 = FileUpload1.PostedFile.FileName;
string picPath2 = FileUpload2.PostedFile.FileName;
InsertPictureToExcel ipt = new InsertPictureToExcel();
ipt.Open();
ipt.InsertPicture("B2", picPath1);
ipt.InsertPicture("B8", picPath2, 120, 80);
ipt.SaveFile(@"D:\ExcelTest.xls");
ipt.Dispose();
}
}
来源:cnblogs
