C#照片批量压缩小工具

listView1.Items.Clear();

imageList1.Images.Clear();

DirectoryInfo TheFolder = new
DirectoryInfo(folderBrowserDialog1.SelectedPath);//文件路径

List<string> ImgNames = new
List<string>();

string
allowImg = ".jpg.jpeg.png.bmp";

FileInfo[] Files = TheFolder.GetFiles();

for (int
i = 0; i < Files.Length; i++)//遍历文件夹

{

    if
(Files[i].Length > 0 &&allowImg.IndexOf(Files[i].Extension.ToLower())>-1)//或者jpg,png 文件大小要大于0且是图片文件

    {

        Image image = Image.FromFile(Files[i].DirectoryName + "\\"
+ Files[i].Name);    //获取文件                

        ImgNames.Add(Files[i].Name);//添加文件名

        imageList1.Images.Add(image);//添加图片

    }

}

//初始化设置

this.listView1.View = View.LargeIcon;

this.listView1.LargeImageList = this.imageList1;

//开始绑定

this.listView1.BeginUpdate();

for
(int
i = 0; i < ImgNames.Count; i++)

{

    ListViewItem lvi = new
ListViewItem();

    lvi.ImageIndex = i;

    lvi.Text = ImgNames[i];

    this.listView1.Items.Add(lvi);

}

this.listView1.EndUpdate();

//设置图片展示控件属性

explorerBrowser1.ContentOptions.ViewMode = ExplorerBrowserViewMode.List;

explorerBrowser1.NavigationOptions.PaneVisibility.Navigation = PaneVisibilityState.Hide;

explorerBrowser1.NavigationOptions.PaneVisibility.CommandsView = PaneVisibilityState.Hide;

explorerBrowser1.NavigationOptions.PaneVisibility.CommandsOrganize = PaneVisibilityState.Hide;

explorerBrowser1.NavigationOptions.PaneVisibility.Commands = PaneVisibilityState.Hide;

explorerBrowser1.SelectionChanged += new
EventHandler(explorerBrowser1_SelectionChanged);

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

//打开图片文件夹

 private
void btnOpenDir_Click(object
sender, EventArgs e)

 {

     // 创建打开文件夹对话框

     CommonOpenFileDialog cfd = new
CommonOpenFileDialog();

     // 设置对话框属性

     cfd.IsFolderPicker = true;

     cfd.AllowNonFileSystemItems = true;

     // 弹出对话框并返回用户的选择

     CommonFileDialogResult result = cfd.ShowDialog();

     //如果用户确定

     if
(result == CommonFileDialogResult.Ok)

     {

         // 获取选择对象的ShellObject形式

         ShellObject resultItem = cfd.FileAsShellObject;

         //用explorerBrowser控件显示图片列表

         explorerBrowser1.Navigate(resultItem);

     }

 }

ParallelOptions po = new
ParallelOptions();

po.MaxDegreeOfParallelism = 15; //最多并发15个任务

//并行进行图片压缩

Parallel.ForEach(imgtoComp, po, (o) =>

{

    System.Drawing.Image sourceImg = System.Drawing.Image.FromFile(o.ParsingName);

    int
iWidth = 0;

    int
iHeight = 0;

    if
(rbtper.Checked)

    {

        int
per = int.Parse(txtper.Text);

        iWidth = sourceImg.Width * per / 100;

        iHeight = sourceImg.Height * per / 100;

    }

    if
(rbtheight.Checked)//最大高度

    {

        iHeight = int.Parse(txtheight.Text);

        iWidth = iHeight * sourceImg.Width / sourceImg.Height;

    }

    if
(rbtwidth.Checked)//最大宽度

    {

        iWidth = int.Parse(txtwidth.Text);

        iHeight = iWidth * sourceImg.Height / sourceImg.Width;

    }

    System.Drawing.Image ThumbImg = ImgCompress.GetImageThumb(sourceImg, iWidth, iHeight);

    if
(rbtpng.Checked) ThumbImg.Save(FileSavePath+o.Name,System.Drawing.Imaging.ImageFormat.Png);

    if
(rbtgif.Checked) ThumbImg.Save(FileSavePath + o.Name, System.Drawing.Imaging.ImageFormat.Gif);

    if
(rbtjpg.Checked) ThumbImg.Save(FileSavePath + o.Name, System.Drawing.Imaging.ImageFormat.Jpeg);

    sourceImg.Dispose();

    ThumbImg.Dispose();

    ifinish++;

    this.Invoke(this.mysetFinish, new
Object[] { ifinish }); //刷新进度条等

});