将FileSystemInfo数组保存为文件
本文关键字:文件 保存 数组 FileSystemInfo | 更新日期: 2023-09-27 17:54:45
我试图保存FileInfo和DirectoryInfo对象的数组作为日志文件使用。目标是在某个时间点捕获目录(及其子目录)的映像,以便以后进行比较。我目前使用这个类来存储信息:
public class myFSInfo
{
public FileSystemInfo Dir;
public string RelativePath;
public string BaseDirectory;
public myFSInfo(FileSystemInfo dir, string basedir)
{
Dir = dir;
BaseDirectory = basedir;
RelativePath = Dir.FullName.Substring(basedir.Length + (basedir.Last() == '''' ? 1 : 2));
}
private myFSInfo() { }
/// <summary>
/// Copies a FileInfo or DirectoryInfo object to the specified path, creating folders and overwriting if necessary.
/// </summary>
/// <param name="path"></param>
public void CopyTo(string path)
{
if (Dir is FileInfo)
{
var f = (FileInfo)Dir;
Directory.CreateDirectory(path.Substring(0,path.LastIndexOf("''")));
f.CopyTo(path,true);
}
else if (Dir is DirectoryInfo) Directory.CreateDirectory(path);
}
}
我已经尝试过XML和二进制序列化我的类没有运气。我还尝试创建一个新类,不包含实际的FileInfo,但只有选定的属性:
public class myFSModInfo
{
public Type Type;
public string BaseDirectory;
public string RelativePath;
public string FullName;
public DateTime DateModified;
public DateTime DateCreated;
public myFSModInfo(FileSystemInfo dir, string basedir)
{
Type = dir.GetType();
BaseDirectory = basedir;
RelativePath = dir.FullName.Substring(basedir.Length + (basedir.Last() == '''' ? 1 : 2));
FullName = dir.FullName;
DateModified = dir.LastWriteTime;
DateCreated = dir.CreationTime;
}
private myFSModInfo() { }
/// <summary>
/// Copies a FileInfo or DirectoryInfo object to the specified path, creating folders and overwriting if necessary.
/// </summary>
/// <param name="path"></param>
public void CopyTo(string path)
{
if (Type == typeof(FileInfo))
{
Directory.CreateDirectory(path.Substring(0, path.LastIndexOf("''")));
File.Copy(FullName,path, true);
}
else if (Type == typeof(DirectoryInfo)) Directory.CreateDirectory(path);
}
public void Delete()
{
if (Type == typeof(FileInfo)) File.Delete(FullName);
else if (Type == typeof(DirectoryInfo)) Directory.Delete(FullName);
}
}
我也没能序列化这个。我可以列出我在各种尝试中遇到的错误,但首先选择最佳方法可能会更容易。下面是我的序列化代码:
public void SaveLog(string savepath, string dirpath)
{
var dirf = new myFSModInfo[1][];
string[] patharr = {dirpath};
GetFSInfo(patharr, dirf);
var mySerializer = new System.Xml.Serialization.XmlSerializer(typeof(myFSModInfo[]));
var myWriter = new StreamWriter(savepath);
mySerializer.Serialize(myWriter, dirf[0]);
myWriter.Close();
/*var bf = new System.Runtime.Serialization.Formatters.Binary.BinaryFormatter();
FileStream fs = new FileStream(savepath, FileMode.Create, FileAccess.Write);
bf.Serialize(fs, dirf[0]); */
}
FileSystemInfo不是可序列化的,因为它不是一个简单类型。FileInfo是不可序列化的,因为它没有空的默认构造函数。
所以如果你想保存这些信息,你必须用简单的类型构建你自己的类,包装来自FileInfo或FileSystemInfo的信息。
[Serializable]
public class MyFileInfo
{
public string Name { get; set; }
public long Length { get; set;}
/// <summary>
/// An empty ctor is needed for serialization.
/// </summary>
public MyFileInfo(){
}
/// <summary>
/// Initializes a new instance of the <see cref="test.MyFileInfo"/> class.
/// </summary>
/// <param name="fileInfo">File info.</param>
public MyFileInfo(string path)
{
FileInfo fileInfo = new FileInfo (path);
this.Length = fileInfo.Length;
this.Name = fileInfo.Name;
// TODO: add and initilize other members
}
}
使用例子:
List<MyFileInfo> list = new List<MyFileInfo> ();
foreach (string entry in Directory.GetFiles(@"c:'temp"))
{
list.Add (new MyFileInfo (entry));
}
XmlSerializer xsSubmit = new XmlSerializer(typeof(List<MyFileInfo>));
StringWriter sww = new StringWriter();
XmlWriter writer = XmlWriter.Create(sww);
xsSubmit.Serialize(writer, list);
Console.WriteLine (sww.ToString());