从C#中的列表框中删除图像

问题描述

谁能举个例子，说明如何清除列表框中显示的图像.

我在表单上有列表框和两个按钮.
当我单击第一个按钮(以选择图像文件夹的路径)时.第二个按钮在列表框中显示图像.为此，我给了一个ImagesList.tal，所有图像都显示在列表框中.

现在，当我选择其他图像文件夹，然后单击第二个按钮时，列表框中的所有图像应清除并显示下一个选定的文件夹图像.

错误:该进程无法访问该文件(在文件夹中显示第一个图像名称)，因为该文件正在被另一个进程使用.

我想要当我第二次单击显示图像"按钮时，它应该包含列表框中显示的所有图像，并在列表框中显示选定的文件夹图像.

Hi,

can any one give example how to clear images displayed in a listbox.

I have listbox and two buttons on the form.
when i click on first button(to select path of the images folder). and second button to display images in the listbox. for this i have talen a ImagesList.And all the images are displaying in Listbox.

Now when i select the other images folder, and click on second button all the images from the listbox should clear and display the next selected folder images.

error: The process cannot access the file(showing first image name in the folder) because it is being used by another process.

I want when i click on show images button second time it should claer all he images from the listbox displaying and display the selected folder images in the listbox.

Showimages button Code:

listbox1.itemssource=null;
listbox1.items.Clear();
List<bitmapimages> imageslist=new List<bitmapimages>

System .IO .DirectoryInfo myimagesdir=new System.IO.DirectoryInfo("selected directory name");
foreach(System.IO.FileInfo myimagesfile in myimagesdir.GetFiles("*.jpg"))
{
 ...
 ...
}
listbox1 .ItemsSource =imageslist;
</bitmapimages></bitmapimages>

谢谢，

Thanks,

推荐答案

if (isFirst)
{
    listBox1.DataSource = null;
    listBox1.Items.Clear();
    var imageslist = new List<string>();

    var myImagesDir = new System.IO.DirectoryInfo(@"dir path");
    foreach (System.IO.FileInfo myimagesfile
             in myImagesDir .GetFiles("*.jpg"))
    {
        imageslist.Add(myimagesfile.Name);
    }
    listBox1.DataSource = imageslist;

    isFirst = false;
}
else
{
    listBox1.DataSource = null;

    isFirst = true;
}</string>

foreach(FileInfo file in files){
 FileStream fs = file.OpenRead();
 MemoryStream ms = new MemoryStream();
 fs.CopyTo(ms);
 fs.Close(); // this frees the file

 Image image = Image.FromStream(ms); // note: NOT ''fs'' or Image.FromFile

}

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