c# text box "between" validation

c# text box "between" validation

I would like to have a text box validate if the entry is a number between
1 and 100.
Example: if (textBox.Text is equal to numbers between 1 and 100) { do
this; } else { do this; }
This is form validation for a trackbar used for jpeg compression and can
only have numeric values between 1 and 100.