清除ac＃表单时如何设置例外？

Question

I need to clear a form of my application. But there are 2 controls that I don't want it to clear.

When I click on another option in my ComboBox . It first wipes all controls and then loads the new controls in. (Or atleast that's what I'm trying to achieve.)

This code loops through all controls within the form and checks whether the control names do not equal to cmbType or lblType . (Because this way it will leave those 2 controls untouched when clearing all controls.)

foreach (Control c in this.Controls)
{
    if (c.Name != "cmbType" && c.Name != "lblType")
    {
        this.Controls.Remove(c);
        c.Dispose();
    }
}

But this way it will sometimes when I click different options in my ComboBox it will not remove all controls completely. It will leave some controls which is not suppose to happen.

Answer 1

列出

 foreach (Control item in Controls.OfType<Control>().ToList())