关于C#中的文件权限

时间:2020-03-05 18:42:24  来源:igfitidea点击:

在CI中创建文件同步程序时,试图在LocalFileItem类中使用System.IO.File.Copy(destination.Path,Path,true)方法创建一个copy方法,其中Path是一个字符串。 。 用目的地执行此代码后。Path =" C:\ Test2"和this.Path =" C:\\ Test \\ F1.txt"我得到一个例外,说我没有在C上执行此操作所需的文件权限:\ Test,但C:\ Test由我本人(当前用户)拥有。
有谁知道发生了什么事,或者如何解决这个问题?

这是完整的原始代码。

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;

namespace Diones.Util.IO
{
    /// <summary>
    /// An object representation of a file or directory.
    /// </summary>
    public abstract class FileItem : IComparable

    {
        protected String path;
        public String Path
        {
            set { this.path = value; }
            get { return this.path; }
        }
        protected bool isDirectory;
        public bool IsDirectory
        {
            set { this.isDirectory = value; }
            get { return this.isDirectory; }
        }
        /// <summary>
        ///  Delete this fileItem.
        /// </summary>
        public abstract void delete();
        /// <summary>
        ///  Delete this directory and all of its elements.
        /// </summary>
        protected abstract void deleteRecursive();
        /// <summary>
        ///  Copy this fileItem to the destination directory.
        /// </summary>
        public abstract void copy(FileItem fileD);
        /// <summary>
        ///  Copy this directory and all of its elements
        /// to the destination directory.
        /// </summary>
        protected abstract void copyRecursive(FileItem fileD);
        /// <summary>
        /// Creates a FileItem from a string path.
        /// </summary>
        /// <param name="path"></param>
        public FileItem(String path)
        {
            Path = path;
            if (path.EndsWith("\") || path.EndsWith("/")) IsDirectory = true;
            else IsDirectory = false;
        }
        /// <summary>
        /// Creates a FileItem from a FileSource directory.
        /// </summary>
        /// <param name="directory"></param>
        public FileItem(FileSource directory)
        {
            Path = directory.Path;
        }
        public override String ToString()
        {
            return Path;
        }
        public abstract int CompareTo(object b);
    }
    /// <summary>
    /// A file or directory on the hard disk
    /// </summary>
    public class LocalFileItem : FileItem
    {
        public override void delete()
        {
            if (!IsDirectory) File.Delete(this.Path);
            else deleteRecursive();
        }
        protected override void deleteRecursive()
        {
            Directory.Delete(Path, true);
        }
        public override void copy(FileItem destination)
        {
            if (!IsDirectory) File.Copy(destination.Path, Path, true);
            else copyRecursive(destination);
        }
        protected override void copyRecursive(FileItem destination)
        {
            Microsoft.VisualBasic.FileIO.FileSystem.CopyDirectory(
                Path, destination.Path, true);
        }
        /// <summary>
        /// Create's a LocalFileItem from a string path
        /// </summary>
        /// <param name="path"></param>
        public LocalFileItem(String path)
            : base(path)
        {
        }
        /// <summary>
        /// Creates a LocalFileItem from a FileSource path
        /// </summary>
        /// <param name="path"></param>
        public LocalFileItem(FileSource path)
            : base(path)
        {
        }
        public override int CompareTo(object obj)
        {
            if (obj is FileItem)
            {
                FileItem fi = (FileItem)obj;
                if (File.GetCreationTime(this.Path).CompareTo
                    (File.GetCreationTime(fi.Path)) > 0) return 1;
                else if (File.GetCreationTime(this.Path).CompareTo
                    (File.GetCreationTime(fi.Path)) < 0) return -1;
                else
                {
                    if (File.GetLastWriteTime(this.Path).CompareTo
                        (File.GetLastWriteTime(fi.Path)) < 0) return -1;
                    else if (File.GetLastWriteTime(this.Path).CompareTo
                        (File.GetLastWriteTime(fi.Path)) > 0) return 1;
                    else return 0;
                }
            }
            else
                throw new ArgumentException("obj isn't a FileItem");
        }
    }
}

解决方案

回答

似乎我们将参数放置在File.Copy()中,它应该是File.Copy(字符串源,字符串目标)。

还是" C:\ Test2"目录吗?我们无法将文件复制到目录。
使用类似的东西:

File.Copy( 
    sourceFile,
    Path.Combine(destinationDir,Path.GetFileName(sourceFile))
    )

;

回答

我在这里有点猜测,但这可能是因为:

  • 我们正在尝试在C:根目录下执行文件操作? (如果我们使用的是Vista,可能对此有所保护-不确定吗?)
  • 我们要复制到不存在的目录吗?
  • 该文件已经存在,可能已被锁定? (即我们尚未关闭另一个应用程序实例)?

抱歉,我无法提供更多帮助,我很少遇到File.Copy的问题。

回答

我能够解决问题,Michal向我指出了正确的方向。
问题是我试图使用File.Copy将文件从一个位置复制到另一个位置,而Copy方法仅将所有内容从一个文件复制到另一个位置(如果尚不存在,则创建目标文件)。解决方案是将文件名添加到目标目录。
感谢我们提供的所有帮助!