c# - 如何仅搜索和替换完全匹配的字符串

Question

我需要在一个字符串中搜索并替换某个字符串

Ex: Search String "Add Additional String to text box". Replace "Add" with "Insert"

Output expected = "Insert Additional String to text box"

如果你使用string s="Add Additional String to text box".replace("Add","Insert");

Output result = "Insert Insertitional String to text box"

有没有人有想法让这个工作产生预期的输出？

谢谢!

Answer 1

您可以使用 Regex 来执行此操作:

扩展方法示例:

public static class StringExtensions
{
    public static string SafeReplace(this string input, string find, string replace, bool matchWholeWord)
    {
        string textToFind = matchWholeWord ? string.Format(@"\b{0}\b", find) : find;
        return Regex.Replace(input, textToFind, replace);
    }
}

用法:

  string text = "Add Additional String to text box";
  string result = text.SafeReplace("Add", "Insert", true);

结果:“将附加字符串插入文本框”