处理大量的图片

本文关键字：处理 | 更新日期: 2023-09-27 17:54:24

我正在编写一个程序，打开一个folderBrowserDialog1，然后使用

循环遍历目录中的文件
using string[] files = Directory.GetFiles(folderBrowserDialog1.SelectedPath, "*.*", SearchOption.AllDirectories);

获取文件夹和子文件夹中的所有文件，随后程序将字符串数组拆分为多个列表，将数据过滤为4种类型

public static readonly List<string> ImageExtensions = new List<string> { ".JPG", ".JPE", ".BMP", ".GIF", ".PNG" };
public static readonly List<string> OfficeExtensions = new List<string> { ".DOC", ".DOCX", ".XLS", ".XLSX", ".PPT",".PPTX",".XLM",".PPS",".PPSX",".MDB" };
public static readonly List<string> VideoExtensions = new List<string> { ".FLV", ".AVI", ".MOV", ".MP4", ".MPG", ".WMV", ".3GP", ".ASF", ".RM", ".SWF",".MTS" };
public static readonly List<string> AudioExtensions = new List<string> { ".AAC", ".MP3", ".OGG", ".WMA", ".WAV" };
public static List<string> images = new List<string>();
public static List<string> audio = new List<string>();
public static List<string> videos = new List<string>();

我正在拍摄图片，以另一种形式显示它们的拇指代码如下:

public partial class frm_brsimag : MainForm
{
    public static List<string> selimages = new List<string>();
    int currPos = 0;
    const int pageCount = 100;
    public frm_brsimag()
    {
        InitializeComponent();
    }
    private void frm_brsimag_Load(object sender, EventArgs e)
    {
        menuStrip1.Hide();
    }
    private void LoadImages(int startFrom, int to)
    {
        flowLayoutPanel1.Controls.Clear();
        for (int file = startFrom; file < startFrom + to; file++)
        {
            LinkLabel l = new LinkLabel();
            l.Tag = FileManager.images[file];
            l.Text = Path.GetFileNameWithoutExtension(FileManager.images[file]);
            flowLayoutPanel1.FlowDirection = FlowDirection.TopDown;
            PictureBox picBox = new PictureBox();
            picBox.SizeMode = PictureBoxSizeMode.StretchImage;
            picBox.ContextMenuStrip = contextMenuStrip1;
            picBox.Height = 125;
            picBox.Width = 125;
            picBox.LoadAsync(FileManager.images[file]);
            //Label lbl = new Label();
            // lbl.Text = Path.GetFileNameWithoutExtension(FileManager.images[file]);
            flowLayoutPanel1.Controls.Add(picBox);
            flowLayoutPanel1.Controls.Add(l);
            l.LinkClicked += new LinkLabelLinkClickedEventHandler(LinkedLabelClicked);
            //flowLayoutPanel1.Controls.Add(lbl);
        }
    }
    private void LinkedLabelClicked(object sender, LinkLabelLinkClickedEventArgs e)
    {
        string filepath = ((LinkLabel)sender).Tag.ToString();
        Process.Start("explorer.exe", "/select," + filepath);
    }
    private void btnNext_Click(object sender, EventArgs e)
    {
        if (FileManager.images.Count - currPos > pageCount)
        {
            LoadImages(currPos, pageCount);
            currPos += pageCount;
        }
        else
        {
            LoadImages(currPos, FileManager.images.Count - currPos);
            currPos += FileManager.images.Count - currPos;
        }
    }
    private void btnPrev_Click(object sender, EventArgs e)
    {
        if (currPos >= pageCount)
            currPos -= pageCount;
        else
            currPos = 0;
        LoadImages(currPos, pageCount);
    }

问题是:我有很多文件，有时要处理35K的图片。

我试图使next和previous按钮加载图片100 × 100的形式如图所示，以防止应用程序从内存中消耗大量的空间，但它不工作，当我加载程序与图片任务管理器显示，该程序消耗1.2 GB，当我按下next按钮，它不断增加你可以帮助，并经过许多页面导航程序崩溃，谢谢!论坛的设计，所以我把事情弄清楚:https://i.stack.imgur.com/gdOYO.jpg

处理大量的图片

没关系，我以前的回答没有注意到你做了清除flowLayoutPanel1。也就是说，您可以在不删除处理程序的情况下清除其内容，也不处理一次性对象(控件是)-这至少是您的问题的一部分，因为附加事件处理程序将源实例保留在内存中。

因此，在清除控件之前，像这样分离处理程序(未经测试添加的代码-可能需要调整)。看看这是否有助于解决你的记忆问题。

private void LoadImages(int startFrom, int to)
{
    foreach(var control in flowLayoutPanel1.Controls)
    {
        if(control is LinkLabel)
        {
            // Detach handlers
            (control as LinkLabel).LinkClicked -= new LinkLabelLinkClickedEventHandler(LinkedLabelClicked);
        }
        // Dispose of controls we're about to clear out...
        control.Dispose();
    }
    flowLayoutPanel1.Controls.Clear();
    for (int file = startFrom; file < startFrom + to; file++)
    {
        LinkLabel l = new LinkLabel();
        l.Tag = FileManager.images[file];
        l.Text = Path.GetFileNameWithoutExtension(FileManager.images[file]);
        flowLayoutPanel1.FlowDirection = FlowDirection.TopDown;
        PictureBox picBox = new PictureBox();
        picBox.SizeMode = PictureBoxSizeMode.StretchImage;
        picBox.ContextMenuStrip = contextMenuStrip1;
        picBox.Height = 125;
        picBox.Width = 125;
        picBox.LoadAsync(FileManager.images[file]);
        //Label lbl = new Label();
        // lbl.Text = Path.GetFileNameWithoutExtension(FileManager.images[file]);
        flowLayoutPanel1.Controls.Add(picBox);
        flowLayoutPanel1.Controls.Add(l);
        l.LinkClicked += new LinkLabelLinkClickedEventHandler(LinkedLabelClicked);
        //flowLayoutPanel1.Controls.Add(lbl);
    }
}
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