然后先拆加入一个字符串的一个子集 [英] First split then join a subset of a string

问题描述

我有字符串如下：

thumb_634735515600845357tchayat_november_200612.jpg

我想要做的是第一个拆分按_。然后取部分从1到n和加入他们。在这之后

what i want to do is first split by _ . Then take the part from 1 to n and join them.

换句话说，我希望有以下内容：

in other words after this i want to have the following:

634735515600845357tchayat_november_200612.jpg

我知道该怎么做分裂。但后来我如何加入他们吗？

I know how to do split. but then how do i join them ?

我可以循环做。只是好奇，是有这更好的办法

I can do a for loop. just curious is there is a better way to this?

编辑：

我不能有一个子，因为我有拇指_ *

I cant have a substring, because I have data before thumb_*

推荐答案

由于 _ 后拇指总是第一个实例，然后串应符合的IndexOf一起完全可行的。

Since the _ after the thumb is always the first instance then substring should be perfectly viable in conjunction with IndexOf.

string newString = myString.Substring(myString.IndexOf("_") + 1);

这应该采取的子字符串开始处的字符立即按 _ 字符。

This should take the substring starting at the character immediately following the first instance of the _ character.

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