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利用C#向Excel报表中插入图片的2种方法实例代码

时间:2011-06-01 16:58来源:知行网www.zhixing123.cn 编辑:麦田守望者

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;
}
}
运行结果:
 

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标签(Tag):C# C#实例教程 c#基础教程 C#源代码
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