how loop through multiple checkbox in C#

Question

I have 100 checkbox in a winfrom. Their name is sequential like checkbox1,checkbox2 etc. I have a submit button in my winform. After clicking the submitting button, it check

Answer 1

foreach (var ctrl in panel.Controls) {
    if (ctrl is CheckBox && ((CheckBox)ctrl).IsChecked) {
        //Do Something
    }
}