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C#实现给图片添加日期信息的示例详解

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效果

C#实现给图片添加日期信息的示例详解

代码

 public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        public string flag = null;
        PropertyItem[] pi;
        string TakePicDateTime;
        int SpaceLocation;
        string pdt;
        string ptm;
        Bitmap Pic;
        Graphics g;
        Thread td;

        private void button5_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            string[] IMG;
            listBox1.Items.Clear();
            if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {
                IMG = openFileDialog1.FileNames;
                if (IMG.Length > 0)
                {
                    for (int i = 0; i < IMG.Length; i++)
                    {
                        listBox1.Items.Add(IMG[i]);
                    }
                }

                androidflag = IMG.Length.ToString();
            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            listBox1.Items.Clear();
            flag = null;
        }

        private void button3_Click(object sender, EventArgs e)
        {
            if (foldandroiderBrowserDialog1.ShowDialog() == DialogResult.OK)
       编程客栈     {
                txtSavePath.Text = folderBrowserDialog1.SelectedPath;
            }
        }

        private void button4_Click(object sender, EventArgs e)
        {
            if (flag == null || txtSavePath.Text == "")
            {
                return;
            }
            else
            {
                toolStripProgressBar1.Visible = true;
                td = new Thread(new ThreadStart(AddDate));
                td.Start();
            }
        }

        private void AddDate()
        {
            Font normalContentFont = new Font("宋体", 36, FontStyle.Bold);
            Color normalContentColor = Color.Red;
            int kk = 1;
            toolStripProgressBar1.Maximum = listBox1.Items.Count;
            toolStripProgressBar1.Minimum = 1;
            toolStripStatusLabel1.Text = "开始添加数码相片拍摄日期";
            for (int i = 0; i < listBox1.Items.Count; i++)
            {
                pi = GetExif(listBox1.Items[i].ToString());
                //获取元数据中的拍照日期时间,以字符串形式保存
                TakePicDateTime = GetDateTime(pi);
                //分析字符串分别保存拍照日期和时间的标准格式
                SpaceLocation = TakePicDateTime.IndexOf(" ");
                pdt = TakePicDateTime.Substring(0, SpaceLocation);
                pdt = pdt.Replace(":", "-");
                ptm = TakePicDateTime.Substring(SpaceLocation + 1, TakePicDateTime.Length - SpaceLocation - 2);
                TakePicDateTime = pdt + " " + ptm;
                //由列表中的文件创建内存位图对象
                Pic = new Bitmap(listBox1.Items[i].ToString());
                //由位图对象创建Graphics对象的实例
                g = Graphics.FromImage(Pic);
                //绘制数码照片的日期/时间
                g.DrawString(TakePicDateTime, normalContentFont, new SolidBrush(normalContentColor),
                    Pic.Width - 700, Pic.Height - 200);
                //将添加日期/时间戳后的图像进行保存
                if (txtSavePath.Text.Length == 3)
                {
编程客栈                    Pic.Save(txtSavePath.Text + Path.GetFileName(listBox1.Items[i].ToString()));
                }
                else
                {
                    Pic.Save(txtSavePath.Text + "\\" + Path.GetFileName(listBox1.Items[i].ToString()));
                }

                //释放内存位图对象
                Pic.Dispose();
                toolStripProgressBar1.Value = kk;
                if (kk == listBox1.Items.Count)
                {
                    toolStripStatusLabel1.Text = "全部数码相片拍摄日期添加成功";
                    toolStripProgressBar1.Visible = false;
                    flag = null;
                    listBox1.Items.Clear();
                }

                kk++;
            }
        }

        #region 获取数码相片的拍摄日期

        //获取图像文件的所有元数据属性,保存倒PropertyItem数组
        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
     开发者_JAVA学习       Image image = Image.FromStream(Mystream, true, false);
            return image.PropertyItems;
        }

        //遍历所有元数据,获取拍照日期/时间
        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
                if (pp.Id == 0x0132)
                {
                    return ascii.GetString(pp.Value);
                }
            }

            //若没有相关的EXIF信息则返回N/A
            return "N/A";
        }

        #endregion

        private void Form1_Load(object sender, EventArgs e)
        {
            CheckForIllegalCrossThreadCalls = false;
        }

        private void Form1_FormClosed(object sender, FormClosedEventArgs e)
        {
            if (td != null)
            {
                td.Abort();
            }
        }js
    }

到此这篇关于C#实现给图片添加日期信息的示例详解的文章就介绍到这了,更多相关C#图片添加日期信息内容请搜索我们以前的文章或继续浏览下面的相关文章希望大家以后多多支持我们!

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