写入大型文本文件时抛出OutOfMemory异常 [英] OutOfMemory exception thrown while writing large text file
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问题描述
我想生成一个字符串,然后将其写入.txt文件.问题是我尝试这样做时会得到OutOfMemory异常.
I want to generate a string and then write it in to a .txt file. The problem is I get OutOfMemory exceptions when I attempt to do so.
文件很大(大约10000行).
The file is large (about 10000 lines).
我使用String.Format
并循环创建字符串.如何将其写入.txt文件?
I use String.Format
and loops to create the string. How can I write this to a .txt file?
string Text= @"...";
const string channelScalar = @"...";
Text= string.Format(...);
foreach (Channel channel in ...)
{
switch (channel.Type)
{
case "...":
Text= string.Format(Text,
ChannelFrames(channel, string.Format(...);
break;
}
}
File.WriteAllText(textBox9.Text,Text);
推荐答案
使用StreamWriter
直接将生成的每一行写入文本文件.这样可以避免先将整个长文件存储在内存中.
Use a StreamWriter
to directly write each line you generate into the textfile. This avoids storing the whole long file in memory first.
using (System.IO.StreamWriter sw = new System.IO.StreamWriter("C:\\Somewhere\\whatever.txt"))
{
//Generate all the single lines and write them directly into the file
for (int i = 0; i<=10000;i++)
{
sw.WriteLine("This is such a nice line of text. *snort*");
}
}
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