如何读取文件流的名称 [英] How do I read the names of a filestream

问题描述

我在Server.MapPath（图片/）中存储了3张jpg图片。我需要一种方法来读取每个jpg图片名称，然后通过下面的文件流删除循环每个filejpg。

I have 3 jpg pictures stored in Server.MapPath("Pictures/"). I need a way to read each jpg picture name then loop each filejpg thru the filestream delete below.

try
            {
                using (FileStream fsSource = new FileStream(Server.MapPath("Pictures/" + filejpg), FileMode.Open, FileAccess.Read))
                {
                    File.Delete(Server.MapPath("Pictures/" + filejpg));
                }
            }
            catch (FileNotFoundException ioEx)
            {
                Label100.Text = "Filestream Delete Old: " + ioEx.ToString();
            }

我的尝试：



我试过删除图片文件夹。这不起作用：使用（FileStream fsSource = new FileStream（Server.MapPath（Pictures /），FileMode.Open，FileAccess.Read））

What I have tried:

I tried just deleting the Pictures folder. This did not work: using (FileStream fsSource = new FileStream(Server.MapPath("Pictures/"), FileMode.Open, FileAccess.Read))

推荐答案

A FileStream 用于读取文件内容，而不是用于列出文件夹中的文件。



你当你打开 FileStream 引用它时，无法删除文件。



如果你是尝试删除特定文件夹中的所有匹配文件，您需要使用 Directory.GetFiles [ ^ ]：

A FileStream is used for reading the contents of a file, not for listing the files in a folder.

You can't delete a file whilst you've got an open FileStream referencing it.

If you're trying to delete all matching files in a specific folder, you need to use Directory.GetFiles[^]:

string folder = Server.MapPath("~/Pictures/");
foreach (string file in Directory.GetFiles(folder, "*.jpg"))
{
    try
    {
        File.Delete(file);
    }
    catch (IOException ex)
    {
        Label100.Text = string.Format("Delete '{0}': {1}", Path.GetFileName(file), ex);
    }
}

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