ASP.NET - ASp.net with c# checkbox

i want dymanicilly checkbox in my application Ex. x=20

Please describe your query in more details than u will be get proper answer.
As i understand your query u want to add dynamic checkbox on page
so u can put these line of code where u wnat to add checkbox at runtime means put it on page load or button click

CheckBox _checkbox = new CheckBox();
  _checkbox.ID = "chkDynamicCheckBox";
  _checkbox.Text = "This is a dynamically generated checkbox";
       
  Panel1.Controls.Add (_checkbox);

Here is the code to add checkbox dynamically

CheckBox cb1 = new CheckBox();
cb.Text = "Option1";

CheckBox cb2 = new CheckBox();
cb.Text = "Option2";

this.Page.Controls.Add(cb1);
this.Page.Controls.Add(cb2);

 my application is online bus booking system .