英文:
C# split string with multiple separators
问题
string one = @"first%second";
string two = @"first%second%third";
string three = @"first%second%third%fourth";
string oneresult = @"second";
string tworesult = @"second%third";
string threresult = @"second%third%fourth";
英文:
Strings:
string one = @"first%second";
string two = @"first%second%third";
string three = @"first%second%third%fourth";
I need to be able to separate everything that comes after the first '%' delimiter.
I'd normally use split function:
string partofstring = one.Split('%').Last();
or
string partofstring = one.Split('%').[1];
However I need to be able to get:
string oneresult = @"second";
string tworesult = @"second%third";
string threresult = @"second%third%fourth";
答案1
得分: 4
string.Split有一个重载，允许你指定要返回的拆分数。将2指定为拆分数，你将得到一个数组，其中索引为0的元素可以丢弃，索引为1的元素正是所需的输出。
string three = @"first%second%third%fourth";
var result = three.Split(new char[] { '%' }, 2);
Console.WriteLine(result[1]); // ==> second%third%fourth
英文:
string.Split has an overload that allows you to specify the number of splits that you want to get back. Specifying 2 as the number of splits you will get an array with the element at index 0 that you can discard and the element at index 1 that is exactly the output requested
string three = @"first%second%third%fourth";
var result = three.Split(new char[] {'%'}, 2);
Console.WriteLine(result[1]); // ==> second%third%fourth
答案2
得分: 2
[string.SubString](https://learn.microsoft.com/en-us/dotnet/api/system.string.substring?view=netframework-4.8) 返回从指定位置到字符串末尾的子字符串。
[string.IndexOf](https://learn.microsoft.com/en-us/dotnet/api/system.string.indexof?view=netframework-4.8) 返回字符串中指定字符的第一个索引。
英文:
Try this
string partofstring = one.SubString(one.IndexOf('%'));
String.SubString returns a string starting from the specified position to the end of the string.
String.IndexOf returns the first index of the specified character in the string.
答案3
得分: 0
使用不同的 string.Split 重载，允许您指定最大项目数：
var newString = myString.Split('%', 2)[1];
请注意，如果您使用 .NET Framework，您需要使用不同的重载：
var newString = three.Split(new[] { '%' }, 2)[1];
或者，您可以自行计算，使用 IndexOf 和 Substring：
var newString = myString.Substring(myString.IndexOf('%') + 1);
英文:
Either use a different overload of string.Split that allows you to specify the maximum number of items:
var newString = myString.Split('%', 2)[1];
Note if you're using .NET Framework, you will need to use a different overload:
var newString = three.Split(new[] { '%'}, 2)[1];
Or, calculate it yourself using IndexOf and Substring:
var newString = myString.Substring(myString.IndexOf('%') + 1);
答案4
得分: 0
我改进了@Preciousbetine提供的代码片段：
var partofstring = two.IndexOf('%') < 0 ? string.Empty : two.Substring(two.IndexOf('%') + 1);
这将检查字符串是否不包含关键字%。
英文:
I've improved the code snippet given by @Preciousbetine
var partofstring = two.IndexOf('%') < 0 ? string.Empty : two.Substring(two.IndexOf('%') + 1);
This will check if the string doesn't contain the key %.
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