C#-将大(150MB)文本文件读入RTF文本框 [英] C# - Read in a large (150MB) text file into a Rich Text Box

问题描述

我正在尝试将150mb的文本文件读入RTF文本框中.

I'm trying to read in a 150mb text file into a Rich Text box.

当前，我正在使用StreamReader遍历文件中的每一行，并将每一行追加到StringBuilder实例.

Currently, I am using a StreamReader to iterate through each line in the file, appending every line to a StringBuilder instance.

这适用于较小的文件，但尝试读取大文件时出现System.OutOfMemory异常.

This works for smaller files, but I get a System.OutOfMemory exception when trying to read large files.

读取150mb文件没有任何问题-有足够的物理内存，并且完全在Windows 32位应用程序地址空间之内.

I don't see any problems with reading a 150mb file - there is plenty of physical memory and that's well within the Windows 32-bit application address space.

如果这里有人知道如何执行此操作，将不胜感激.

If anyone here has any idea how to do this, It would be greatly appreciated.

我将在代码末尾附加

谢谢.

StringBuilder sb = new StringBuilder();
using (StreamReader sr = new StreamReader(fileLocation))
{
   string line;
   while ((line = sr.ReadLine()) != null)
   {
      sb.AppendLine(line);
   }
    }

return sb;

推荐答案

使用RichTextBox.LoadFile

http://msdn.microsoft.com/zh-CN/library/system.windows.forms.richtextbox.loadfile.aspx

我不确定为什么要将整个文本加载到StringBuilder.或者，您可以将FileStream传递给LoadFile，这将为您呈现大文件.

I'm not sure why you would want to load the entire text to a StringBuilder. Alternatively you could pass a FileStream to LoadFile which would render the large file for you.

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