c# - 如何从C#中的字符串中提取十进制数

Question

string sentence = "X10 cats, Y20 dogs, 40 fish and 1 programmer.";
string[] digits = Regex.Split (sentence, @"\D+");

对于这段代码，我在数字数组中获取了这些值

10,20,40,1

string sentence = "X10.4 cats, Y20.5 dogs, 40 fish and 1 programmer.";
string[] digits = Regex.Split (sentence, @"\D+");

对于这段代码，我在数字数组中获取了这些值

10,4,20,5,40,1

但我想得到喜欢

10.4,20.5,40,1as decimal numbers. How can I achieve this?

Answer 1

对@Michael 解决方案的小改进:

// NOTES: about the LINQ:
// .Where() == filters the IEnumerable (which the array is)
//     (c=>...) is the lambda for dealing with each element of the array
//     where c is an array element.
// .Trim()  == trims all blank spaces at the start and end of the string
var doubleArray = Regex.Split(sentence, @"[^0-9\.]+")
    .Where(c => c != "." && c.Trim() != "");

返回:

10.4
20.5
40
1

原来的解决方案正在返回

[empty line here]
10.4
20.5
40
1
.