从指定的loaction替换string的文本 [英] replace text of string from specified loaction

问题描述

我有一个字符串aaaabbbbccccddddaaaabbbbccccdddaabbbbbccccdddd。

i想要覆盖aaaa到dddd，但只根据情况从一个地方覆盖。

所以我想设置偏移直到长度。并覆盖数据。





谢谢

i have an string aaaabbbbccccddddaaaabbbbccccddddaaaabbbbccccdddd.
i want to overwrite aaaa to dddd but from only one wherever want according to situation.
so i want to set offset till the length. and overwrite the data.


thanks

推荐答案

正则表达式和@Snehasish_Nandy的提议可行：

A combination of regular expressions and @Snehasish_Nandy 's proposal would work:

string pattern = "aaaabbbbccccdddd";
string replacement = "eeffgghh";
int whichOne = 3;
System.Text.RegularExpressions.MatchCollection matches = System.Text.RegularExpressions.Regex.Matches(input, pattern);
if (matches.Count >= whichOne)
{
    StringBuilder sb = new StringBuilder(input);
    sb.Remove(matches[whichOne].Index, matches[whichOne].Length);
    sb.Insert(matches[whichOne].Index, replacement);
    string output = sb.ToString();
}

使用IndexOf，SubString，替换函数来执行你的任务..



评论您的实际要求。获得确切的解决方案。

use IndexOf , SubString , Replace functions to perform ur task..

comment ur actual requirement. to get the exact solution.

为此使用String.Substring函数

use "String.Substring" function for this

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