winforms - c# text box "between" validation -

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i trying have text box validate if entry number between 1 , 100.

example: 

if (textbox.text equal numbers between 1 , 100) {     this;  }  else  {      this;  }

this form validation trackbar used jpeg compression , can have numeric values between 1 , 100. how do this?

enter image description here

string text = textbox.text; try{     long value = long.parse(text.trim());     if(value > 0 && value < 101){        //do here     }     else{        //do else     } } catch(exception e){    messagebox.show("please check input , try again"); }

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