C＃ - 如何分割字符串

Question

可能重复：
How to split string preserving whole words?

我有以下字符串：

string s = "The Electors shall meet in their respective states to vote by ballot for President and Vice-President."; 

我要采取的第一个60个字符，将它们分成两个单独的字符串，每个字符串不超过30个字符每个字符串必须以整个单词开头（不包含部分单词，也不包含空格）。所以这是期望的结果：

string s1 = "The Electors shall meet in"; // 26 characters 
string s2 = "their respective states to vot"; // 30 characters 

谢谢。

Answer 1

string s = "The Electors shall meet in their respective states to vote by ballot for President and Vice-President."; 

string sSub = s.Substring(0,60); //first 60 letters 

string sSubSub = sSub.Substring(0,30); //at most 30 per string 

int index = sSubSub.LastIndexOf(' '); //finds the last space 

string firstString = sSub.Substring(0,index); //first string is up until that space of t he 60-letter string 

string secondSTring = sSub.Substring(index + 1, 30); //second string is the first 30 letters of the rest of the 60-letter string 

Answer 2

也许尝试计算中点，然后在两个方向上工作，直到找到空间。那就是你的分裂点。