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 box in this.Controls.OfType())
{
    if (box.Checked)
    {
        //...
    }
    else
    {
        //...
    }
}