如何将多个图像添加到列表框并在选中时将其显示在图片框中 [英] how to add multiple images to listbox and display them in picturebox when selected

问题描述

我一直在尝试使用fileDialog选择多个图像，然后将图像添加到列表框中。当在列表框中选择一个项目时，我想要将图像显示在图片框中。这是我的代码

I have been trying to select multiple images using the fileDialog and then add the images to a listbox. When an item is selected in the listbox, I want to image to be displayed in a picturebox. Here is my code

private void cmdInputDirectory_Click(object sender, EventArgs e)
       {

           //open a directory/file dialog to copy the image file
           //OpenFileDialog open = new OpenFileDialog();

           //image filters
           inputDialog.Filter = "Picture Files(*.BMP;*.JPG;*.GIF)|*.BMP;*.JPG;*.GIF|ALL FILES(*.*)|*.*";

           //allow the user to select multiple image files
           this.inputDialog.Multiselect = true;
           this.inputDialog.Title = "Select Image File(s)";

           //add the selected images to the listbox "lstImages" on the right panel
           DialogResult dr = this.inputDialog.ShowDialog();
               if(dr == System.Windows.Forms.DialogResult.OK)
               {

                   //Read the files and add them to the listbox "lstImages"
                         foreach(string file in inputDialog.FileNames)
                         {
                             lstImages.Items.Add(Path.GetFileName(file));
                         }



                       //image file path
                       txtInputDirectory.Text = inputDialog.FileName;


               }

以下是从中选择项目的代码列表框

And here is the code to select item from the listbox

// string selectedItem = lstImages.Items[lstImages.SelectedIndex].ToString() ;
         img = new Bitmap(selectedItem);

         picImageDisplay.Image = img;

推荐答案

试试这个：

Try this:

public partial class Form1 : Form
{
    string parentDir = "";
    public Form1()
    {
        InitializeComponent();
    }

    private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
    {
        string filename = System.IO.Path.Combine(parentDir, listBox1.SelectedItem.ToString());
        pictureBox1.Image = Image.FromFile(filename);
    }

    private void selectFilesButton_Click(object sender, EventArgs e)
    {
        using (OpenFileDialog dlg = new OpenFileDialog())
        {
            dlg.Filter = "";
            dlg.Title = "";
            dlg.Multiselect = true;

            DialogResult dr = dlg.ShowDialog(this);
            if (dr == DialogResult.OK)
            {
                foreach (string file in dlg.FileNames)
                {
                    if (string.IsNullOrEmpty(parentDir))
                        parentDir = System.IO.Path.GetDirectoryName(file);

                    listBox1.Items.Add(file);
                }
            }
        }
    }
}

hth Stoffy

hth Stoffy

非常感谢 stoffy 我尝试了你的代码片段，它解决了我一直在与之斗争的问题

Thank you very much stoffy I tried your code snippet and it solved the problem i have been battling with for days

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