为数码照片添加日期

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Imaging;
using System.IO;

namespace ImageDate
{
    public partial class Form1 : Form
    {
        public Form1（）
        {
            InitializeComponent（）;
        }
        public static PropertyItem[] GetExif（string fileName）
        {
            FileStream Mystream = new FileStream（fileName FileMode.Open FileAccess.Read）;
            //通过指定的数据流来创建Image
            Image image = Image.FromStream（Mystream true false）;
            return image.PropertyItems;
        }
        private string GetDateTime（System.Drawing.Imaging.PropertyItem[] parr）
        {
            Encoding ascii = Encoding.ASCII;
            //遍历图像文件元数据，检索所有属性
            foreach （PropertyItem pp in parr）
            {
                //如果是PropertyTagDateTime，则返回该属性所对应的值
 

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     文件         917  2009-02-06 15:44  sj\01\ImageDate\ImageDate.sln
     文件       14336  2009-02-06 15:49  sj\01\ImageDate\ImageDate.suo
     文件        1686  2009-02-06 15:48  sj\01\ImageDate\ImageDate\Form1.cs
     文件        2889  2009-02-06 15:47  sj\01\ImageDate\ImageDate\Form1.Designer.cs
     文件        6017  2009-02-06 15:47  sj\01\ImageDate\ImageDate\Form1.resx
     文件        3764  2009-02-06 15:45  sj\01\ImageDate\ImageDate\ImageDate.csproj
     文件         490  2009-02-06 15:44  sj\01\ImageDate\ImageDate\Program.cs
     文件        9216  2009-02-06 15:48  sj\01\ImageDate\ImageDate\bin\Debug\ImageDate.exe
     文件       22016  2009-02-06 15:48  sj\01\ImageDate\ImageDate\bin\Debug\ImageDate.pdb
     文件       14328  2009-02-06 15:48  sj\01\ImageDate\ImageDate\bin\Debug\ImageDate.vshost.exe
     文件         490  2007-07-21 01:33  sj\01\ImageDate\ImageDate\bin\Debug\ImageDate.vshost.exe.manifest
     文件         594  2009-02-06 15:48  sj\01\ImageDate\ImageDate\obj\Debug\ImageDate.csproj.FileListAbsolute.txt
     文件         847  2009-02-06 15:48  sj\01\ImageDate\ImageDate\obj\Debug\ImageDate.csproj.GenerateResource.Cache
     文件        9216  2009-02-06 15:48  sj\01\ImageDate\ImageDate\obj\Debug\ImageDate.exe
     文件         180  2009-02-06 15:48  sj\01\ImageDate\ImageDate\obj\Debug\ImageDate.Form1.resources
     文件       22016  2009-02-06 15:48  sj\01\ImageDate\ImageDate\obj\Debug\ImageDate.pdb
     文件         180  2009-02-06 15:45  sj\01\ImageDate\ImageDate\obj\Debug\ImageDate.Properties.Resources.resources
     文件        1350  2009-02-06 15:44  sj\01\ImageDate\ImageDate\Properties\AssemblyInfo.cs
     文件        2868  2009-02-06 15:44  sj\01\ImageDate\ImageDate\Properties\Resources.Designer.cs
     文件        5612  2009-02-06 15:44  sj\01\ImageDate\ImageDate\Properties\Resources.resx
     文件        1094  2009-02-06 15:44  sj\01\ImageDate\ImageDate\Properties\Settings.Designer.cs
     文件         249  2009-02-06 15:44  sj\01\ImageDate\ImageDate\Properties\Settings.settings
     文件         917  2009-02-06 15:49  sj\02\ImageFont\ImageFont.sln
     文件       14336  2009-02-06 15:58  sj\02\ImageFont\ImageFont.suo
     文件        1146  2009-02-06 15:57  sj\02\ImageFont\ImageFont\Form1.cs
     文件        4767  2009-02-06 15:52  sj\02\ImageFont\ImageFont\Form1.Designer.cs
     文件        6017  2009-02-06 15:52  sj\02\ImageFont\ImageFont\Form1.resx
     文件        3764  2009-02-06 15:52  sj\02\ImageFont\ImageFont\ImageFont.csproj
     文件         490  2009-02-06 15:49  sj\02\ImageFont\ImageFont\Program.cs
     文件        9728  2009-02-06 15:57  sj\02\ImageFont\ImageFont\bin\Debug\ImageFont.exe
     文件       24064  2009-02-06 15:57  sj\02\ImageFont\ImageFont\bin\Debug\ImageFont.pdb
............此处省略36个文件信息