检查字符串是否包含Unicode字符

Question

I have a button whose text contains a black circle

Button.Text = "This is the button text ●"

Later when I click on the button I need to check if the Text contains the circle character, however Button.Text.Contains("&x25CF;") returns False

How can I search a string for the Unicode characters?

Answer 1

In C#, unicode character escape sequences are written as \● , while ● is XML or HTML.

So you should write

Text.Contains("\u25CF")