重定向。NET StreamWriter输出到String变量

您可以使用StringWriter将值直接写入字符串生成器对象来实现此操作

StringBuilder sb = new StringBuilder();
StringWriter sw = new StringWriter(sb);
// now, the StringWriter instance 'sw' will write to 'sb'

StreamWriter 和 StringWriter 两者都扩展了TextWriter,也许你可以重构使用StreamWriter的方法,转而使用TextWriter,这样它就可以写入流或字符串?

你应该能够使用内存流做你需要做的事情。

MemoryStream mem = new MemoryStream(); 
StreamWriter sw = new StreamWriter(mem);
sw.WriteLine("Foo"); 
// then later you should be able to get your string.
// this is in c# but I am certain you can do something of the sort in C++
String result = System.Text.Encoding.UTF8.GetString(mem.ToArray(), 0, (int) mem.Length);

试试这个代码=]

StringBuilder sb = new StringBuilder();
StringWriter sw = new StringWriter(sb);
string s = sb.ToString(); <-- Now it will be a string.

如您所述,重构方法以返回字符串。以你尝试的方式进行黑客攻击,虽然在学术上很有趣,但会使代码变得混乱,并使跟随你的人很难维护。