C＃Stringbuilder在添加大量文本时损坏内容

Question

我遇到了一个我看起来无法解决的stringbuilder问题。为了简化创建以下方法问题：

private static string TestBigStrings() { 
    StringBuilder builder = new StringBuilder(); 

    for (int i = 1; i < 1500; i++) { 
    string line = "This is a line isn't too big but breaks when we add to many of it."; 
    builder.AppendLine(line); 
    } 

    return builder.ToString(); 
} 

它应该只是补充该行1500次，事后其合并为一个字符串并返回它。然而，不仅仅是组合它会破坏内容。在结果中间的某处您可以找到文本：

This is a line isn't too big but breaks when we add to many of it. 
This is a line isn't too big but breaks when we add to many of it. 
This is a line isn't too big but breaks when we add to many of it. 
This is a line isn't too big but breaks when we add to many of ...s a line isn't too big but breaks when we add to many of it. 
This is a line isn't too big but breaks when we add to many of it. 
This is a line isn't too big but breaks when we add to many of it. 
This is a line isn't too big but breaks when we add to many of it. 

该项目是一个简单的控制台。我也尝试了所有其他的解决方案，以检查是否这是可能的一些其他的方式，如：

• 写入文本文件（同腐败和折断早）

• 其写入存储器流和读取（相同腐败）

• 使用列表和加入该（相同腐败）

• 只是使用+ =上一个字符串（相同腐败）

• 使用string.concat（同腐败）

全体同仁，我问正在运行到同样的问题一样，所以它不应该是PC相关。有人知道这里发生了什么吗？

Answer 1

这是你正在经历什么？

嗯，这只是躺在给你调试。它会缩短太长的字符串以避免过多的内存使用。

我写的字符串的文件时，用一个简单的：

File.WriteAllText("BigString.txt", str); 

你猜怎么着：字符串是预期在那里，它不以任何方式损坏。