Check for flowLayoutPanel in C #

Question

I want to make an error label when my flowLayoutPanel is empty, but I do not know how to verify that flowLayoutPanel is empty. This is my current code:

private void flowLayoutPanel1_ControlRemoved(object sender, ControlEventArgs e)
        {
            if (flowLayoutPanel1.Controls == null)
            {
                customtoolwarning.Visible = true;
            }
            else
            {
                customtoolwarning.Visible = false;
            }
        }

Please, help,

thank

Answer 1

private void flowLayoutPanel1_ControlRemoved(object sender, ControlEventArgs e)
        {
            if (flowLayoutPanel1.Controls.Count > 0)
            {
                customtoolwarning.Visible = true;
            }
            else
            {
                customtoolwarning.Visible = false;
            }
        }

Answer 2

The problem you are facing is checking Controlson nullto determine if it is empty. The property Controlswill never be null, but instead will be nonempty and has a length of 0 when empty. for instance

if (flowLayoutPanel1.Controls.Count == 0) {
  // It empty
}

Answer 3

lblNoContacts.Visible = (flowLayoutPanel.Controls.Count == 0) ? true : false;