C# 删除文件夹及其内容
我只是想删除一个文件夹及其内容C# 删除文件夹及其内容,c#,asp.net-mvc,asp.net-mvc-5,delete-file,C#,Asp.net Mvc,Asp.net Mvc 5,Delete File,我只是想删除一个文件夹及其内容 public ActionResult Product_Delete() { string idnumber = "07"; string path1 = @"~/Content/Essential_Folder/attachments_AR/" + idnumber; DirectoryInfo attachments_AR = new DirectoryInfo(Server.MapPath(
public ActionResult Product_Delete()
{
string idnumber = "07";
string path1 = @"~/Content/Essential_Folder/attachments_AR/" + idnumber;
DirectoryInfo attachments_AR = new DirectoryInfo(Server.MapPath(path1));
EmptyFolder(attachments_AR);
Directory.Delete(path1);
....
}
private void EmptyFolder(DirectoryInfo directory)
{
foreach (FileInfo file in directory.GetFiles())
{
file.Delete();
}
foreach (DirectoryInfo subdirectory in directory.GetDirectories())
{
EmptyFolder(subdirectory);
subdirectory.Delete();
}
}
但使用此选项可以删除07
文件夹中的所有内容,但不会最终删除07
文件夹
我在这行目录中出错。删除(路径1)代码>
调试后,我可以看到运行时错误和下面的消息
找不到路径“C:\Program Files(x86)\IIS”的一部分
Express\~\Content\Essential\u文件夹\attachments\u AR\07'
但是path1的值是~/Content/Essential\u Folder/attachments\u AR/07
您不能通过给出目录的物理路径来删除目录。使用Directory.Delete()
从web应用程序中删除,因此必须使用Server.MapPath()
使用:Directory.Delete(Server.MapPath(path1))代码>
或者,您可以像下面这样使用,而无需使用EmptyFolder()
方法:
DirectoryInfo dir = new DirectoryInfo(Server.MapPath(path1));
dir.GetFiles("*", SearchOption.AllDirectories).ToList().ForEach(file=>file.Delete());
// will delete all files in the folder and its sub folder
//so you don't need to iterate each sub folder and files in it
Directory.Delete(Server.MapPath(path1));
原因是目录.Delete
无法识别路径中的~
您需要使用Server.MapPath()
将其转换为绝对路径,就像您在这里所做的那样:
DirectoryInfo attachments_AR = new DirectoryInfo(Server.MapPath(path1));
您可能还希望转换它一次,并在两种方法中使用:
public ActionResult Product_Delete()
{
string idnumber = "07";
string mappedPath1 = Server.MapPath(@"~/Content/Essential_Folder/attachments_AR/" + idnumber);
DirectoryInfo attachments_AR = new DirectoryInfo(mappedPath1));
EmptyFolder(attachments_AR);
Directory.Delete(mappedPath1);
....
}
顺便说一句,完全不需要手动删除文件。你可以用
public ActionResult Product_Delete()
{
string idnumber = "07";
string mappedPath = Server.MapPath(@"~/Content/Essential_Folder/attachments_AR/" + idnumber);
Directory.Delete(mappedPath, true);
}
它将递归删除所有文件夹、子文件夹和文件,然后删除目录本身。您应该使用完整路径而不是相对路径直接删除。试一试
Directory.Delete(attachments_AR.FullName);
只需在变量中获取文件夹的单独路径,并在目录中传递此变量。删除(.)如下所示:
为什么不使用目录类()中的方法:
您的代码将更干净、更简单,但更重要的是,当手动构建路径时,您可以达到路径长度限制。我遇到这样的问题,解决方法是使用这种方法。以下是我所做的解决方法,它也在删除根文件夹:
public ActionResult Product_Delete()
{
string idnumber = "07";
string path1 = @"~/Content/Essential_Folder/attachments_AR/" + idnumber;
DirectoryInfo attachments_AR = new DirectoryInfo(Server.MapPath(path1));
EmptyFolder(attachments_AR);
if (attachments_AR.Exists && IsDirectoryEmpty(attachments_AR.FullName))
attachments_AR.Delete();
}
private static void EmptyFolder(DirectoryInfo directory)
{
foreach (FileInfo file in directory.GetFiles())
{
file.Delete();
}
foreach (DirectoryInfo subdirectory in directory.GetDirectories())
{
EmptyFolder(subdirectory);
subdirectory.Delete();
}
}
public static bool IsDirectoryEmpty(string path)
{
return !Directory.EnumerateFileSystemEntries(path).Any();
}
除了答案-目录。删除(附件\u AR.全名)代码>谢谢这个答案也是正确的,但是@Yeldar首先回答说没关系,不;我已经更新了我的答案。请看一看是的,它可以优化我的代码,我只是在寻找类似的东西,谢谢
public static void Delete(
string path,
bool recursive
)
public ActionResult Product_Delete()
{
string idnumber = "07";
string path1 = @"~/Content/Essential_Folder/attachments_AR/" + idnumber;
DirectoryInfo attachments_AR = new DirectoryInfo(Server.MapPath(path1));
EmptyFolder(attachments_AR);
if (attachments_AR.Exists && IsDirectoryEmpty(attachments_AR.FullName))
attachments_AR.Delete();
}
private static void EmptyFolder(DirectoryInfo directory)
{
foreach (FileInfo file in directory.GetFiles())
{
file.Delete();
}
foreach (DirectoryInfo subdirectory in directory.GetDirectories())
{
EmptyFolder(subdirectory);
subdirectory.Delete();
}
}
public static bool IsDirectoryEmpty(string path)
{
return !Directory.EnumerateFileSystemEntries(path).Any();
}