如何检查字符串变量是否包含 dot/period(.) 字符？

Question

我想检查一个字符串是否包含点字符，像这样

Dim input As String
input = "Hello."

if (input contains a dot character) then
  do something
else
  do something
End if

Answer 1

最简单的就是

input.Contains('.')

How to check if a String variable contains a dot/period(.) character?