C#简单图片浏览器

实验内容

（1）参考现有图片浏览软件功能，实现一个自己的图片浏览软件

（2）该图片浏览器，至少完成以下功能：

文件操作：目录打开，指定文件打开；

图片显示方式：normal，stretch；

图片旋转操作；

图片浏览功能：幻灯片演示；

....

（3）界面美观，操作方便

部分代码单个文件打开  private void button1_Click_1(object sender, EventArgs e)        {             OpenFileDialog openFileDialog1 = new OpenFileDialog();            openFileDialog1.Filter = "图?片?文?件t(*.bmp,jpg,gif,jpeg)|*.bmp;*.jpg;gif;jpeg";            openFileDialog1.Multiselect = true;            if (openFileDialog1.ShowDialog() == DialogResult.OK)            {                List<string> keylist = new List<string>();                string filename = openFileDialog1.FileName;                path2 = filename;                Show a = new Show(path2);                a.Show();            }        }路径打开 private void button2_Click(object sender, EventArgs e)        {            listView1.Clear();            imageList1.Images.Clear();            imageList2.Images.Clear();            list.Clear();             folderBrowserDialog1.Description = "选?择?文?件t夹D";                        if (folderBrowserDialog1.ShowDialog() == DialogResult.OK)            {                path = folderBrowserDialog1.SelectedPath;            }                        if (!string.IsNullOrEmpty(path))            {                DirectoryInfo dir = new DirectoryInfo(@path);                foreach (FileInfo dChild in dir.GetFiles("*.jpg"))                {                    Image img = Image.FromFile(dChild.FullName, true);                    list.Add(dChild.FullName);                    imageList1.Images.Add(img);                    imageList2.Images.Add(img);                }                foreach (FileInfo dChild in dir.GetFiles("*.bmp"))                {                                        Image img = Image.FromFile(dChild.FullName, true);                    list.Add(dChild.FullName);                    imageList1.Images.Add(img);                    imageList2.Images.Add(img);                }                foreach (FileInfo dChild in dir.GetFiles("*.png"))                {                                        Image img = Image.FromFile(dChild.FullName, true);                    list.Add(dChild.FullName);                    imageList1.Images.Add(img);                    imageList2.Images.Add(img);                }                foreach (FileInfo dChild in dir.GetFiles("*.jpeg"))                {                                       Image img = Image.FromFile(dChild.FullName, true);                    list.Add(dChild.FullName);                    imageList1.Images.Add(img);                    imageList2.Images.Add(img);                }                foreach (FileInfo dChild in dir.GetFiles("*.gif"))                {                                        Image img = Image.FromFile(dChild.FullName, true);                    list.Add(dChild.FullName);                    imageList1.Images.Add(img);                    imageList2.Images.Add(img);                }                listView1.LargeImageList = imageList1;                for (int i = 0; i < imageList1.Images.Count; i++)                {                    ListViewItem lvi = new ListViewItem();                    lvi.Name = list[i];                    lvi.ImageIndex = i;                                    listView1.Items.Add(lvi);                }                button3.Enabled = true;            }            else            {                 MessageBox.Show("请?先è选?择?路·径?");            }        }图片操作①显示方式改变  private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)        {            string a = comboBox1.SelectedItem.ToString();            if (a.Equals("normal"))            {                pictureBox1.SizeMode = PictureBoxSizeMode.AutoSize;            }            if (a.Equals("stretch"))            {                pictureBox1.Size = new Size(713,405);                pictureBox1.SizeMode = PictureBoxSizeMode.Zoom;            }        }②旋转  private void button1_Click_1(object sender, EventArgs e)        {            if (pictureBox1.Image != null)            {                int p = pictureBox1.Width;                pwidth = pictureBox1.Height;                pheight = p;                pictureBox1.Size = new Size(pwidth,pheight);                pictureBox1.Image.RotateFlip(RotateFlipType.Rotate90FlipNone);                pictureBox1.Refresh();            }        }        private void button2_Click_1(object sender, EventArgs e)        {            if (pictureBox1.Image != null)            {                int p = pictureBox1.Width;                pwidth = pictureBox1.Height;                pheight = p;                pictureBox1.Size = new Size(pwidth, pheight);                pictureBox1.Image.RotateFlip(RotateFlipType.Rotate270FlipNone);                pictureBox1.Refresh();            }        }③缩放  private void button3_Click(object sender, EventArgs e)        {                        width1 =  Convert.ToInt32( width1/1.2);            height1 = Convert.ToInt32( height1/1.2);            pictureBox1.SizeMode = PictureBoxSizeMode.Zoom;            pictureBox1.Size = new Size(width1,height1);        }        private void button4_Click(object sender, EventArgs e)        {            width1 =Convert.ToInt32( width1 * 1.2);            height1 = Convert.ToInt32( height1 * 1.2);            pictureBox1.SizeMode = PictureBoxSizeMode.Zoom;            pictureBox1.Size = new Size(width1, height1);        }④幻灯放映private void timer1_Tick(object sender, EventArgs e)        {            try            {                if (i < allpath.Count())                {                    Image img;                            img = Image.FromFile(allpath[i], true);                    int width = img.Width;                    int height = img.Height;                    if (width > pictureBox1.Width || height > pictureBox1.Height)                    {                        pictureBox1.SizeMode = PictureBoxSizeMode.Zoom;                    }                    else                    {                        pictureBox1.SizeMode = PictureBoxSizeMode.CenterImage;                    }                    pictureBox1.Image = img;                    GC.Collect();                    i++;                    if (i == allpath.Count())                    {                        i = 0;                    }                }            }            catch { }        }

本次实验设计出了一个简单的图片浏览器。实验中遇到的难题有两个：缩略图的显示以及图片操作部分。缩略图部分我请教了几个同学，到网上查了不少资料后找到了解决方法。在图片操作方面，

刚开始做时就出现了图片显示不全的问题，之后又在进行图片操作（缩放、旋转）时出现了一点小Bug,但最终还是解决了。

本次实验让我更深刻地了解到C#的编程方法，以及在可视化编程时不同控件的相互组合使用的方法。很多时候一个控件解决不了的问题，只要配合另一个控件就可以迎刃而解。本次实验做出的图片浏览器在显示方面还是有不少地方不尽人意，美观度也比不上一般的图片浏览器，相信经过修改后定能变得更好。