Question

在双引号和空字符串之间替换\ n或\ r或\ r \ n的最佳方法是什么

使用c＃？

示例：＆＃34; abc \ ndef＆＃34;应该是＆＃34; abcdef＆＃34;

Answer 1

不确定＆＃34;最佳＆＃34;，但这可行：

  string a = "abc\nefg";

  a = string.Concat(a.Split(new char[] { '\n', '\r' }));

你能用Best来定义你的意思吗？最快的？少代码？可读吗？

Answer 2

这样的事情：

public static String RemoveQuots(String source) {
  if (String.IsNullOrEmpty(source))
    return source;

  StringBuilder sb = new StringBuilder(source.Length);

  Boolean inQuot = false;

  foreach (var ch in source) {
    if (ch == '"')
      inQuot = !inQuot;

    if (!inQuot || ((ch != '\n') && (ch != '\r')))
      sb.Append(ch);
  }

  return sb.ToString();
}

...

String source = "\"abc\ndef\"";
String result = RemoveQuots(source);

详细测试

   String source = "preserved: \n \"deleted: \n\" \"\" preserved: \n tail";
   // preserved: 
   // "deleted: " "" preserved: 
   // tail
   String result = RemoveQuots(source);

说明：

   1st \n is out double quots
   2nd \n is within double quotes: \"deleted: \n\" (note \")
   3d  \"\" is just empty "" *string* so \n is once again doomed to be deleted

Answer 3

使用string.Replace

string b = "abc\ndef";

b = string.Replace("\n", "");

<强>输出：

b = "abcdef"

如何替换字符串中的某些字符

3 个答案: