如何在Folderbrowserdialog中过滤文件？

本文介绍了如何在Folderbrowserdialog中过滤文件？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我尝试用folderBrowserDialog用imagefiles填充listview。谁知道快速的方法呢？ 谢谢：）

I try to fill a listview with imagefiles by an folderBrowserDialog. Who know a fast way to do this? Thank you :)

推荐答案

首先我是猜猜你要填写System.Windows.Forms.ListView，对吗？ 其次我猜你要用文件夹中的图像文件来填充它，这个文件夹是用FolderBrowserDialog选中的，对吗？ 将来你真的应该更好地指出你的问题... 不过你需要做的就是填写ListView的LargeImageList或者SmallImageList（取决于您要使用的ListView视图）与从图像文件创建的Image对象。 如下所示： First I'm guessing you want to fill out the System.Windows.Forms.ListView, right? Second I'm guessing you want to fill it with image files located inside a folder which is selected with FolderBrowserDialog, right? In the future you really should specify your issues better... Nevertheless what you need to do is fill the ListView's LargeImageList or a SmallImageList (depending on what ListView's View you are going to use) with the Image objects created from image files. So something like the following: if (this.folderBrowserDialog1.ShowDialog() == DialogResult.OK) { this.listView1.View = View.LargeIcon; this.listView1.LargeImageList = new ImageList() { ImageSize = new Size(64, 64) }; var imageFiles = from file in Directory.EnumerateFiles(this.folderBrowserDialog1.SelectedPath) let extension = Path.GetExtension(file) // Add more image extensions if needed ... where extension.Equals(".jpg") || extension.Equals(".png") select file; int imageIndex = 0; foreach (string imageFile in imageFiles) { this.listView1.LargeImageList.Images.Add(Image.FromFile(imageFile)); this.listView1.Items.Add(null, imageIndex++); } }

我现在看到了，所以你想拖拽&将图像放到ListView控件上，这很有意义。 为此你需要启用Drag& amp;在您的应用程序中删除功能，这里是拖动和 - 的简短概述在Windows窗体中删除功能。 以下是一个如何执行此操作的示例： I see now, so you want to Drag & Drop the images onto the ListView control, well that makes sense. For this you need to enable Drag & Drop feature in your application, here is a short overview of Drag-and-Drop Functionality in Windows Forms. And here is an example how you can do this: // I moved this outside. private int imageIndex = 0; public Form1() { InitializeComponent(); this.listView1.AllowDrop = true; this.listView1.DragEnter += (sender, e) => { if (e.Data.GetDataPresent(DataFormats.FileDrop)) e.Effect = DragDropEffects.Copy; }; this.listView1.DragDrop += (sender, e) => { string[] files = (string[])e.Data.GetData(DataFormats.FileDrop); // You can notice that the following lines are repetition which I also used in above sample code. // So you can tweak a bit your code so that you don't repeat yourself. var imageFiles = from file in files let extension = Path.GetExtension(file) where extension.Equals(".jpg") || extension.Equals(".png") select file; foreach (string imageFile in imageFiles) { this.listView1.LargeImageList.Images.Add(Image.FromFile(imageFile)); this.listView1.Items.Add(null, this.imageIndex++); } }; }