重绕TextReader文件流。 [英] Rewinding a TextReader file stream.

问题描述

大家好，

如何回放以下静音流：


TextReader tr = new StreamReader（File.Open（fileName，FileMode.Open） ））;


是否有专门的方法或者我应该关闭并重新打开文件...

非常感谢，


Alberto

解决方案

使用FileStream，它支持通过Seek方法进行随机访问：

http：// msdn2。 microsoft.com/en-us/lib...ilestream.aspx


-

HTH，

Kevin Spencer

Microsoft MVP

Chicken Salad Shooter
http://unclechutney.blogspot.com

男人，计划，运河，回文都有...哦，没关系。


< in ** @ devdept.comwrote in message

新闻： 11*********************@b28g2000cwb.googlegro ups.com ...

大家好，


如何回放以下静默流：


TextReader tr = new StreamReader（File.Open（fileName，FileMode.Open） ）;


是否有专门的方法或者我应该关闭并重新打开文件...


非常感谢，


Alberto

Kevin Spencer< sp ** @ uce.govwrote：

使用FileStream，它支持通过Seek方法进行随机访问：

http://msdn2.microsoft.com/en-us/lib...ilestream.aspx

但要注意，如果你在FileStream中寻找，你需要在StreamReader上调用

DiscardBufferedData（），否则它会继续给予

缓冲再次从流中读取数据。


-

Jon Skeet - < sk *** @ pobox.com>
http://www.pobox.com/~skeet 博客： http://www.msmvps.com/jon.skeet

如果回复小组，请不要给我发邮件

谢谢大家，

你能不能给我一个小的speudocode例子打开一个文件

文件/从中读取/快退/再次阅读？

谢谢，


Alberto

Hi All,
How can i rewind the following sile stream:

TextReader tr = new StreamReader(File.Open(fileName, FileMode.Open));

Is there a dedicated method or shall I close and re-open the file...
Thanks a lot,

Alberto

解决方案

Use a FileStream, which supports random access via the Seek method:

http://msdn2.microsoft.com/en-us/lib...ilestream.aspx

--
HTH,

Kevin Spencer
Microsoft MVP
Chicken Salad Shooter
http://unclechutney.blogspot.com

A man, a plan, a canal, a palindrome that has.. oh, never mind.

<in**@devdept.comwrote in message
news:11*********************@b28g2000cwb.googlegro ups.com...

Hi All,
How can i rewind the following sile stream:

TextReader tr = new StreamReader(File.Open(fileName, FileMode.Open));

Is there a dedicated method or shall I close and re-open the file...
Thanks a lot,

Alberto

Kevin Spencer <sp**@uce.govwrote:

Use a FileStream, which supports random access via the Seek method:

http://msdn2.microsoft.com/en-us/lib...ilestream.aspx

But beware that if you seek within the FileStream, you''ll need to call
DiscardBufferedData() on the StreamReader, otherwise it''ll keep giving
buffered data before reading from the stream again.

--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet Blog: http://www.msmvps.com/jon.skeet
If replying to the group, please do not mail me too

Thanks guys,
Can you please provide me a small speudocode example of opening a text
file/reading from it/rewind it/read again?
Thanks,

Alberto

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