C#写入/读出文本文件
public
void
Page_Load(Object src,EventArgs e)
{
StreamWriter rw = File.CreateText(Server.MapPath(".")+"//myText.txt");
rw.WriteLine("追逐理想");
rw.WriteLine("kzlll");
rw.WriteLine(".NET笔记");
rw.Flush();
rw.Close();
}
打开文本文件
StreamReader sr = File.OpenText(Server.MapPath(".")+"//myText.txt"
);
StringBuilder output = new
StringBuilder();
string
rl;
while((rl=sr.ReadLine())!=null
)
{
output.Append(rl+"<br>");
}
lblFile.Text =
output.ToString();
sr.Close();
C#追加文件
StreamWriter sw = File.AppendText(Server.MapPath(".")+"//myText.txt"
);
sw.WriteLine("追逐理想"
);
sw.WriteLine("kzlll"
);
sw.WriteLine(".NET笔记"
);
sw.Flush();
sw.Close();
C#拷贝文件
string
OrignFile,NewFile;
OrignFile
=
Server.MapPath(
"
.
"
)
+
"
//myText.txt
"
;
NewFile
=
Server.MapPath(
"
.
"
)
+
"
//myTextCopy.txt
"
;
File.Copy(OrignFile,NewFile,
true
);
C#删除文件
string
delFile
=
Server.MapPath(
"
.
"
)
+
"
//myTextCopy.txt
"
;
File.Delete(delFile);
C#移动文件
string
OrignFile,NewFile;
OrignFile
=
Server.MapPath(
"
.
"
)
+
"
//myText.txt
"
;
NewFile
=
Server.MapPath(
"
.
"
)
+
"
//myTextCopy.txt
"
;
File.Move(OrignFile,NewFile);
C#创建目录
//
创建目录c:/sixAge
DirectoryInfo d
=
Directory.CreateDirectory(
"
c://sixAge
"
);
//
d1指向c:/sixAge/sixAge1
DirectoryInfo d1
=
d.CreateSubdirectory(
"
sixAge1
"
);
//
d2指向c:/sixAge/sixAge1/sixAge1_1
DirectoryInfo d2
=
d1.CreateSubdirectory(
"
sixAge1_1
"
);
//
将当前目录设为c:/sixAge
Directory.SetCurrentDirectory(
"
c://sixAge
"
);
//
创建目录c:/sixAge/sixAge2
Directory.CreateDirectory(
"
sixAge2
"
);
//
创建目录c:/sixAge/sixAge2/sixAge2_1
Directory.CreateDirectory(
"
sixAge2//sixAge2_1
"
);
递归删除文件夹及文件
<%
@ Page Language
=
C#
%>
<%
@ Import
namespace
=
"
System.IO
"
%>
<
Script runat
=
server
>
public
void
DeleteFolder(
string
dir)
{
if (Directory.Exists(dir)) //如果存在这个文件夹删除之
{
foreach(string d in Directory.GetFileSystemEntries(dir))
{
if(File.Exists(d))
File.Delete(d); //直接删除其中的文件
else
DeleteFolder(d); //递归删除子文件夹
}
Directory.Delete(dir); //删除已空文件夹
Response.Write(dir+" 文件夹删除成功");
}
else
Response.Write(dir+" 该文件夹不存在"); //如果文件夹不存在则提示
}
protected
void
Page_Load (Object sender ,EventArgs e)
{
string Dir="D://gbook//11";
DeleteFolder(Dir); //调用函数删除文件夹
}
</
Script
>