如何为Winform类列表分配相同的属性？

Question

I have an arraylist of all a bunch of winform controls (textboxes, checkboxes, radio buttons, etc).

I am trying to enable/disable them all at once.

Code is as below:

Button button = new Button();
Label label = new Label();
Listview listview = new ListView();

ArrayList controlList = new ArrayList();

controlList.add(button);
controlList.add(label);
controlList.add(listview);

foreach(object o in controlList) {
    o.enabled = false;
}

But of course, this wouldn't work, since the class object does not have the property "enabled" in it.

What should I do to make this work?

Answer 1

You should use a List<Control> . This is the base class of all System.Windows.Controls . You can iterate over all properties of the Control type:

Button button = new Button();
Label label = new Label();
Listview listview = new ListView();

var controlList = new List<Control>();
controlList.Add(button);
controlList.Add(label);
controlList.Add(listview);

foreach(var o in controlList) {
    o.Enabled = false;
}

Answer 2

Change:

o.enabled = false;

To

(o as Control.enabled = false;