streamwriter写到TXT时怎么写到头部,而不是末尾追加呢

streamwriter写到TXT时如何写到头部,而不是末尾追加呢?
streamwriter写到TXT时如何写到头部,而不是末尾追加呢? 用什么方法呢,谢谢~~

[解决办法]
你可以

C# code

String xx  = "要写的内容" ;String filePath = @"D:\xx.txt";if (System.IO.File.Exists(filePath))  System.IO.File.WriteAllText(filePath, xx + Environment.NewLine + System.IO.File.ReadAllText(filePath, Encoding.GetEncoding("GB2312")), Encoding.GetEncoding("GB2312"));else  System.IO.File.WriteAllText(filePath, xx, Encoding.GetEncoding("GB2312"));