c# - How to detect a special symbol in the TextBox? -

I need to display a series of numbers with some special symbols in a text box, which can show some more information

Value: 45 *, 35,21 21,34

For example, I think this looks like a text box:

Value: 45 *, 35,21 21,34

And when the user transfers the mouse over the '*' symbol, a small window will appear with some text.

Is this possible? I'm a bit confused how to do this ... In fact, anything like a hyperlink in the text can be helpful ..

You can use the GetCharFromPosition function to define the character ending on the mouse:

  tooltip tt = new tooltip (); Four past rip = ''; Zero text box 1_MouseMove (object sender, mouse events archives e) {char c = textBox1.GetCharFromPosition (e. Location); If (C. Ecloss ('*')) (if (! C. E.L.L. (Last Chir)) {Final C = C; Tt.Show ("This is something special", this.TtextBox1, new point (e.Location .X + 20, e.Location.Y + 20), 2000);}} Else {lastChar = ''; tt.Hide (this.textBox1);}}  

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