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分享string tempStr = File.ReadAllText(@"C:\Documents and Settings\Administrator\桌面\Test.txt", Encoding.GetEncoding("GB2312"));//读取tx
string search_str = "0x10010";
string replace_str = "N";
string pattern = @"(?i)[^,,]+(?=\s*?[,,]\s*?" + search_str + ")";
tempStr = Regex.Replace(tempStr, pattern, replace_str);//替换
File.WriteAllText(@"C:\Documents and Settings\Administrator\桌面\Test.txt",tempStr, Encoding.GetEncoding("GB2312"));//写回