好的，稍后再进行两次编辑…
这应该工作。第一次尝试时，我想我忘记在oStream上设置FileMode.Append了。
string test = "foo.txt";var oStream = new FileStream(test, FileMode.Append, FileAccess.Write, FileShare.Read); var iStream = new FileStream(test, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);var sw = new System.IO.StreamWriter(oStream);var sr = new System.IO.StreamReader(iStream); var res = sr.ReadLine(); res = sr.ReadLine();sw.WriteLine("g"); sw.Flush(); res = sr.ReadLine();res = sr.ReadLine();sw.WriteLine("h"); sw.Flush();sw.WriteLine("i"); sw.Flush(); sw.WriteLine("j"); sw.Flush(); sw.WriteLine("k"); sw.Flush(); res = sr.ReadLine(); res = sr.ReadLine(); res = sr.ReadLine();res = sr.ReadLine();res = sr.ReadLine();res = sr.ReadLine();
