从Mainstring C＃中获取标记内的子字符串

问题描述

嗨我有这样的字符串

Hi I have a string like this

"[fconsender]Username (11:00 AM):[/fconsender] Hi Good Afternoon!"

或

or

"[fconreceiver]AnotherUser (11:02 AM):[/fconreceiver] Yea! How are you ?"

我想在[fconsender]和[/ fconsender]中提取字符串或

[ fconreceiver]和[/ fconreceiver] ...

如何在不使用太多循环的情况下简单地实现它。

它只是为了改变发送者/接收者名称的颜色...

I want to extract the string inside [fconsender] and [/fconsender] or
[fconreceiver] and [/fconreceiver]...
How can I simply achieve it without using much loops,,.
Its just to change the colour of sender/reciever name...

推荐答案

string GetMiddleString(string input, string firsttoken, string lasttoken)
{
    int pos1 = input.IndexOf(firsttoken) + 1;
    int pos2 = input.IndexOf(lasttoken);
    string result = input.Substring(pos1 , pos2 - pos1);
    return result
}

[]

string input = "[fconsender]Username (11:00 AM):[/fconsender] Hi Good Afternoon!";
           string starttag = "[fconsender]";
           string endtag = "[/fconsender]";
           int sindex = input.IndexOf(starttag) + starttag.Length;
           int length = input.IndexOf(endtag) - starttag.Length;
           string output = input.Substring(sindex, length);

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