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C# 将字符串分为两部分：大写和其他任何内容

c# regex

C# 将字符串分为两部分：大写和其他任何内容,c#,regex,C#,Regex,我需要把一根绳子分成两部分。第一部分总是大写和数字。第二部分可以是任何东西 string pattern = "[A-Z]?[a-z]+"; string toSplit = "LOREM IPSUM DOLOR 0,5 SIT Amet consectetur adipiscing elit Atest sss"; Match match = Regex.Match(toSplit, pattern); if (match.Success) { int ind

我需要把一根绳子分成两部分。第一部分总是大写和数字。第二部分可以是任何东西

string pattern = "[A-Z]?[a-z]+";            
string toSplit = "LOREM IPSUM DOLOR 0,5 SIT Amet consectetur adipiscing elit Atest sss";
Match match = Regex.Match(toSplit, pattern);
if (match.Success) {
     int index = match.Index;
     string splittedVal = toSplit.Substring(0, index);
     string secondPart = toSplit.Substring(index, toSplit.Length - index);
}
例如：

LOREM IPSUM DOLOR 0,5 SIT Amet consectetur adipiscing elit

string pattern = "[A-Z]?[a-z]+";            
string toSplit = "LOREM IPSUM DOLOR 0,5 SIT Amet consectetur adipiscing elit Atest sss";
Match match = Regex.Match(toSplit, pattern);
if (match.Success) {
     int index = match.Index;
     string splittedVal = toSplit.Substring(0, index);
     string secondPart = toSplit.Substring(index, toSplit.Length - index);
}
应分为

LOREM IPSUM DOLOR 0,5 SIT

LOREM IPSUM DOLOR 0,5 SIT

string pattern = "[A-Z]?[a-z]+";            
string toSplit = "LOREM IPSUM DOLOR 0,5 SIT Amet consectetur adipiscing elit Atest sss";
Match match = Regex.Match(toSplit, pattern);
if (match.Success) {
     int index = match.Index;
     string splittedVal = toSplit.Substring(0, index);
     string secondPart = toSplit.Substring(index, toSplit.Length - index);
}
及

string pattern = "[A-Z]?[a-z]+";            
string toSplit = "LOREM IPSUM DOLOR 0,5 SIT Amet consectetur adipiscing elit Atest sss";
Match match = Regex.Match(toSplit, pattern);
if (match.Success) {
     int index = match.Index;
     string splittedVal = toSplit.Substring(0, index);
     string secondPart = toSplit.Substring(index, toSplit.Length - index);
}
此外：

string pattern = "[A-Z]?[a-z]+";            
string toSplit = "LOREM IPSUM DOLOR 0,5 SIT Amet consectetur adipiscing elit Atest sss";
Match match = Regex.Match(toSplit, pattern);
if (match.Success) {
     int index = match.Index;
     string splittedVal = toSplit.Substring(0, index);
     string secondPart = toSplit.Substring(index, toSplit.Length - index);
}
应分为

LOREM IPSUM DOLOR 0,5 SIT

LOREM IPSUM DOLOR 0,5 SIT

string pattern = "[A-Z]?[a-z]+";            
string toSplit = "LOREM IPSUM DOLOR 0,5 SIT Amet consectetur adipiscing elit Atest sss";
Match match = Regex.Match(toSplit, pattern);
if (match.Success) {
     int index = match.Index;
     string splittedVal = toSplit.Substring(0, index);
     string secondPart = toSplit.Substring(index, toSplit.Length - index);
}
及

string pattern = "[A-Z]?[a-z]+";            
string toSplit = "LOREM IPSUM DOLOR 0,5 SIT Amet consectetur adipiscing elit Atest sss";
Match match = Regex.Match(toSplit, pattern);
if (match.Success) {
     int index = match.Index;
     string splittedVal = toSplit.Substring(0, index);
     string secondPart = toSplit.Substring(index, toSplit.Length - index);
}
您可以尝试以下方法：

Regex regex = new Regex(@"\b(?=[A-Z][a-z])");
string[] result = regex.Split(yourstr, 2);

string pattern = "[A-Z]?[a-z]+";            
string toSplit = "LOREM IPSUM DOLOR 0,5 SIT Amet consectetur adipiscing elit Atest sss";
Match match = Regex.Match(toSplit, pattern);
if (match.Success) {
     int index = match.Index;
     string splittedVal = toSplit.Substring(0, index);
     string secondPart = toSplit.Substring(index, toSplit.Length - index);
}
图案详情：

\b               # \b is a word boundary (limit between a member
                 # of the \w class and an other character
(?=              # open a lookahead assertion that means "followed by"
    [A-Z][a-z]   # an Uppercase and a lowercase letter
)

string pattern = "[A-Z]?[a-z]+";            
string toSplit = "LOREM IPSUM DOLOR 0,5 SIT Amet consectetur adipiscing elit Atest sss";
Match match = Regex.Match(toSplit, pattern);
if (match.Success) {
     int index = match.Index;
     string splittedVal = toSplit.Substring(0, index);
     string secondPart = toSplit.Substring(index, toSplit.Length - index);
}
split方法的第二个参数限制项目的数量

string pattern = "[A-Z]?[a-z]+";            
string toSplit = "LOREM IPSUM DOLOR 0,5 SIT Amet consectetur adipiscing elit Atest sss";
Match match = Regex.Match(toSplit, pattern);
if (match.Success) {
     int index = match.Index;
     string splittedVal = toSplit.Substring(0, index);
     string secondPart = toSplit.Substring(index, toSplit.Length - index);
}
由于您已经编辑了问题，并且现在还希望在第一个小写字母处拆分，因此您可以将模式更改为：

Regex regex = new Regex(@"\b(?=[A-Z]?[a-z])");

Regex regex = new Regex(@"\s*\b(?=[A-Z]?[a-z])");

string pattern = "[A-Z]?[a-z]+";            
string toSplit = "LOREM IPSUM DOLOR 0,5 SIT Amet consectetur adipiscing elit Atest sss";
Match match = Regex.Match(toSplit, pattern);
if (match.Success) {
     int index = match.Index;
     string splittedVal = toSplit.Substring(0, index);
     string secondPart = toSplit.Substring(index, toSplit.Length - index);
}
这使得大写字母是可选的

string pattern = "[A-Z]?[a-z]+";            
string toSplit = "LOREM IPSUM DOLOR 0,5 SIT Amet consectetur adipiscing elit Atest sss";
Match match = Regex.Match(toSplit, pattern);
if (match.Success) {
     int index = match.Index;
     string splittedVal = toSplit.Substring(0, index);
     string secondPart = toSplit.Substring(index, toSplit.Length - index);
}
注意：如果要修剪第一个子字符串末尾的潜在尾随空格，可以将模式更改为：

Regex regex = new Regex(@"\b(?=[A-Z]?[a-z])");

Regex regex = new Regex(@"\s*\b(?=[A-Z]?[a-z])");

string pattern = "[A-Z]?[a-z]+";            
string toSplit = "LOREM IPSUM DOLOR 0,5 SIT Amet consectetur adipiscing elit Atest sss";
Match match = Regex.Match(toSplit, pattern);
if (match.Success) {
     int index = match.Index;
     string splittedVal = toSplit.Substring(0, index);
     string secondPart = toSplit.Substring(index, toSplit.Length - index);
}
我将对此进行拆分：
（？），因为您已经提到它总是由两部分组成，这个简单的方法可以工作：


string text = "   LOREM IPSUM DOLOR 0,5 SIT amet 0.3 consectetur adipiscing elit";
string[] words = text.Split(new[]{' '}, StringSplitOptions.RemoveEmptyEntries);
bool startUpper = words.First().All(Char.IsUpper);
var firstSwitchingCaseWord = words
    .Select((word, index) => new { word, index })
    .FirstOrDefault(x => startUpper ? x.word.Any(Char.IsLower) : x.word.Any(Char.IsUpper));
if (firstSwitchingCaseWord != null)
{
    string firstPart = string.Join(" ", words.Take(firstSwitchingCaseWord.index));
    string lastPart  = string.Join(" ", words.Skip(firstSwitchingCaseWord.index));
}



string pattern = "[A-Z]?[a-z]+";            
string toSplit = "LOREM IPSUM DOLOR 0,5 SIT Amet consectetur adipiscing elit Atest sss";
Match match = Regex.Match(toSplit, pattern);
if (match.Success) {
     int index = match.Index;
     string splittedVal = toSplit.Substring(0, index);
     string secondPart = toSplit.Substring(index, toSplit.Length - index);
}



在以下正则表达式上拆分


(?<=^[A-Z0-9,\s]+)\s(?![A-Z0-9,]+\b)



string pattern = "[A-Z]?[a-z]+";            
string toSplit = "LOREM IPSUM DOLOR 0,5 SIT Amet consectetur adipiscing elit Atest sss";
Match match = Regex.Match(toSplit, pattern);
if (match.Success) {
     int index = match.Index;
     string splittedVal = toSplit.Substring(0, index);
     string secondPart = toSplit.Substring(index, toSplit.Length - index);
}


另一种情况：


string input = "LOREM IPSUM DOLOR 0,5 SIT amet 0.3 consectetur adipiscing elit";
string[] parts = Regex.Split(input, @"(?<=^[A-Z0-9,\s]+)\s(?![A-Z0-9,]+\b)");
foreach (string part in parts)
    Console.WriteLine(part);



string pattern = "[A-Z]?[a-z]+";            
string toSplit = "LOREM IPSUM DOLOR 0,5 SIT Amet consectetur adipiscing elit Atest sss";
Match match = Regex.Match(toSplit, pattern);
if (match.Success) {
     int index = match.Index;
     string splittedVal = toSplit.Substring(0, index);
     string secondPart = toSplit.Substring(index, toSplit.Length - index);
}



你说第一个字符应该是大写、数字或符号。实际上，如果你要使用下面的字符，你必须指定ascii码。如果你把它和正则表达式混淆了，这是简单易懂的


string pattern = "[A-Z]?[a-z]+";            
string toSplit = "LOREM IPSUM DOLOR 0,5 SIT Amet consectetur adipiscing elit Atest sss";
Match match = Regex.Match(toSplit, pattern);
if (match.Success) {
     int index = match.Index;
     string splittedVal = toSplit.Substring(0, index);
     string secondPart = toSplit.Substring(index, toSplit.Length - index);
}


目前，如果第一个字符是大写字符或数字，如果你想添加一个字符，你需要在
中指定ascii值，如果
方法中找到了
条件，我就这样做了


string pattern = "[A-Z]?[a-z]+";            
string toSplit = "LOREM IPSUM DOLOR 0,5 SIT Amet consectetur adipiscing elit Atest sss";
Match match = Regex.Match(toSplit, pattern);
if (match.Success) {
     int index = match.Index;
     string splittedVal = toSplit.Substring(0, index);
     string secondPart = toSplit.Substring(index, toSplit.Length - index);
}


试试下面的一个--


string pattern = "[A-Z]?[a-z]+";            
string toSplit = "LOREM IPSUM DOLOR 0,5 SIT Amet consectetur adipiscing elit Atest sss";
Match match = Regex.Match(toSplit, pattern);
if (match.Success) {
     int index = match.Index;
     string splittedVal = toSplit.Substring(0, index);
     string secondPart = toSplit.Substring(index, toSplit.Length - index);
}



static void Main（字符串[]args）
{
字符串输入=“LOREM IPSUM DOLOR 0,5 SIT Amet concertetur adipsicing elit”；
字符串[]arr=input.Split（“”）；
List splitList=新列表（）；
int loc=-1；
对于（int i=0；i64&&str[0]<91）| |（str[0]>47&&str[0]<58））
{
如果（str.Count（x=>（x>96&&x<123））>0）
{
结果=真；
}
}            
返回结果；
}

以防您的字符串仅在第一次出现时被拆分


string pattern = "[A-Z]?[a-z]+";            
string toSplit = "LOREM IPSUM DOLOR 0,5 SIT Amet consectetur adipiscing elit Atest sss";
Match match = Regex.Match(toSplit, pattern);
if (match.Success) {
     int index = match.Index;
     string splittedVal = toSplit.Substring(0, index);
     string secondPart = toSplit.Substring(index, toSplit.Length - index);
}



是否总是两部分？如果不是，第三部分什么时候开始，在前两个大写字母？你做了什么努力？第一部分可以包含哪些字符？我已经编辑了问题，可以回顾一下答案吗？