Question

我正在编写一个打开folderBrowserDialog1的程序，然后使用

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，稍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>();

我正在拍照以拇指形式显示它们的另一种形式代码如下：

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：我有很多文件会像35K的图片一样处理。

我尝试制作一个next和previous按钮，在图片中显示100到100的图片，以防止应用从内存中消耗大量空间，但是不工作，当我用图片任务管理器加载程序时显示该程序消耗 1.2 GB ，当我按下next按钮时，它会继续增加你可以帮忙吗？经过多次页面导航，程序崩溃了，谢谢！论坛的设计让我说清楚：http://i.stack.imgur.com/gdOYO.jpg

Answer 1

没关系，我之前的回答没有注意到你确实清除了flowLayoutPanel1。也就是说，你清除它的内容而不删除处理程序，也不处理一次性对象（控件是） - 这至少是你的问题的一部分，因为附加了事件处理程序会将源实例保存在内存中。

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);
    }
}

处理大量图片

1 个答案: