Question

Im using GroupBox Control on my Form Page(WinForms).

The GroupBox contain five controls(RadioButtons).

Any idea how can I get the names and the states of controls
inside GroupBox Control?

Answer 1

You can use Enumerable.OfType to find and cast your RadioButtons in the GroupBox:

var radioButtons = groupBox1.Controls.OfType<RadioButton>();
foreach (RadioButton rb in radioButtons)
{
    bool state = rb.Checked;
    string name = rb.Name;
}