在ASP.NET中操作文件的例子（VB）-.NET教程,Asp.Net开发

在asp.net中操作文件的例子

1、写文件
writefile.aspx

<%@ import namespace="system.io" %>        引入所需的namespace
<%
response.write("writing the content into text file in asp.net <br>")
dim strwriterobj as streamwriter         声明一个streamwriter对象
strwriterobj= file.createtext("c:\aspnet.txt")  新建一个文本文件，赋值给streamwriter对象
strwriterobj.writeline( "welcome to wonderfull world of asp.net programming" )
    向文件中写内容
strwriterobj.close             关闭对象
response.write("done with the creation of text file and writing content into it")
%>

2、读文件
readfile.aspx

<%@ import namespace="system.io" %>
<%
response.write("reading the content from the text file aspnet.txt <br>")
dim streamreaderobj as streamreader         声明一个streamreader对象
dim filecont as string                 声明一个变量保存读出的内容
streamreaderobj = file.opentext( "c:\aspnet.txt" ) 打开文件赋值到streamreader对象
do                        按行循环读取文件内容
    filecont = streamreaderobj.readline()
    response.write( filecont & "<br>" )
loop until filecont = ""
streamreaderobj.close                关闭streamreader对象
response.write("<br> done with reading the content from the file aspnet.txt")
%>

3、删除文件
filedelete.aspx

<%@ import namespace="system.io" %>
<%
file.delete("c:\aspnet.txt" )         删除文件
response.write("the file aspnet is deleted successfully !!!" )
%>