c# - 识别字符串是否为数字(Identify if a string is a number)

Question

If I have these strings:

(如果我有这些字符串：)

1. "abc" = false

   ("abc" = false)

2. "123" = true

   ("123" = true)

3. "ab2" = false

   ("ab2" = false)

Is there a command, like IsNumeric() or something else, that can identify if a string is a valid number?

(是否存在诸如IsNumeric()类的命令，可以识别字符串是否为有效数字？)

  ask by Gold translate from so

Answer 1

int n;
bool isNumeric = int.TryParse("123", out n);

Update As of C# 7:

(从C＃7开始更新 ：)

var isNumeric = int.TryParse("123", out int n);

The var s can be replaced by their respective types!

(var可以用它们各自的类型替换！)