文件夾
創建文件夾
//如果文件夾路徑不存在則創建文件夾
if (!Directory.Exists(path))
Directory.CreateDirectory(path);
遞歸創建文件夾
public void createdir(string fullpath)
{
if (!File.Exists(fullpath))
{
string dirpath = fullpath.Substring(0, fullpath.LastIndexOf('\\'));
//string[] pathes = dirpath.Split('\\');
string[] pathes = fullpath.Split('\\');
if (pathes.Length > 1)
{
string path = pathes[0];
for (int i = 1; i < pathes.Length; i++)
{
path += "\\" + pathes[i];
//如果文件夾路徑不存在則創建文件夾
if (!Directory.Exists(path))
Directory.CreateDirectory(path);
}
}
}
}
View Code
刪除整個文件夾
Directory.Delete(path, true)
獲取目錄下的文件(夾)
var list = new string []{ };
string path = @"D:\公司SVN";
//獲取路徑下所有文件
list = Directory.GetFiles(path);
//獲取路徑下所有文件夾
list = Directory.GetDirectories(path);
//獲取路徑下所有文件+文件夾
list = Directory.GetFileSystemEntries(path);
//獲取路徑下所有文件（包含子集文件）
list = Directory.GetFiles(path, "*.*", SearchOption.AllDirectories);
//獲取路徑下所有文件夾（包含子集文件夾）
list = Directory.GetDirectories(path, "*.*", SearchOption.AllDirectories);
//獲取路徑下所有文件+文件夾（包含子集文件+子集文件夾）
list = Directory.GetFileSystemEntries(path, "*.*", SearchOption.AllDirectories);
文件
獲取文件全路徑、目錄、擴展名、文件名稱
class Program
{
static void Main(string[] args)
{
//獲取當前運行程序的目錄
string fileDir = Environment.CurrentDirectory;
Console.WriteLine("當前程序目錄："+fileDir);
//一個文件目錄
string filePath = "C:\\JiYF\\BenXH\\BenXHCMS.xml";
Console.WriteLine("該文件的目錄："+filePath);
string str = "獲取文件的全路徑：" + Path.GetFullPath(filePath); //-->C:\JiYF\BenXH\BenXHCMS.xml
Console.WriteLine(str);
str = "獲取文件所在的目錄：" + Path.GetDirectoryName(filePath); //-->C:\JiYF\BenXH
Console.WriteLine(str);
str = "獲取文件的名稱含有后綴：" + Path.GetFileName(filePath); //-->BenXHCMS.xml
Console.WriteLine(str);
str = "獲取文件的名稱沒有后綴：" + Path.GetFileNameWithoutExtension(filePath); //-->BenXHCMS
Console.WriteLine(str);
str = "獲取路徑的后綴擴展名稱：" + Path.GetExtension(filePath); //-->.xml
Console.WriteLine(str);
str = "獲取路徑的根目錄：" + Path.GetPathRoot(filePath); //-->C:\
Console.WriteLine(str);
Console.ReadKey();
}
}
創建文件
//path是完整路徑，要包含文件的后綴名
string path = @"C:\1.txt";
//判斷文件是否存在，不存在就創建
if (!File.Exists(path))
{
//創建一個 UTF-8 編碼text文件
File.CreateText(path);
//創建一個文件
//File.Create(path);
}
寫入文件
using System.IO;
namespace ConsoleApp2
{
class Program
{
static void Main(string[] args)
{
//寫入文本，不是追加，是清空在寫入
string path = @"C:\1.txt";
string[] lines = { "First line", "Second line", "Third line" };
File.WriteAllLines(path, lines);
File.WriteAllText(path, "AAAAAAAAAAAAAAAA");
//追加寫入文本
using (StreamWriter sw = new StreamWriter(path, true))
{
sw.WriteLine("Fourth line");
}
using (StreamWriter sw = File.AppendText(path))
{
sw.Write(12345);
}
}
}
}
文件流讀寫
public Stream FileToStream(string fileFullName)
{
using (FileStream fs = new FileStream(fileFullName, FileMode.OpenOrCreate))
{
byte[] bytes = new byte[fs.Length];
fs.Read(bytes, 0, bytes.Length);
fs.Close();
return new MemoryStream(bytes);
}
}
public void WriteFile(string fileFullName, byte[] bytes)
{
if (bytes == null)
return;
using (FileStream fs = new FileStream(fileFullName, FileMode.OpenOrCreate))
{
fs.Write(bytes, 0, bytes.Length);
fs.Close();
}
#region 第二種
/*
using (MemoryStream m = new MemoryStream(bytes))
using (FileStream fs = new FileStream(fileFullName, FileMode.OpenOrCreate))
{
m.WriteTo(fs);
}
*/
#endregion
}
Stream 和 byte[] 互轉
/// <summary>
/// 將 Stream 轉成 byte[]
/// </summary>
/// <param name="bytes"></param>
/// <returns></returns>
public byte[] StreamToBytes(Stream stream)
{
byte[] bytes = new byte[stream.Length];
stream.Read(bytes, 0, bytes.Length);
stream.Seek(0, SeekOrigin.Begin);
stream.Flush();
stream.Close();
return bytes;
}
/// <summary>
/// 將 byte[] 轉成 Stream
/// </summary>
/// <param name="bytes"></param>
/// <returns></returns>
public Stream BytesToStream(byte[] bytes)
{
return new MemoryStream(bytes);
}
