Panel won't show up in UserControl

[gib99]

Hello,

I want to add a Panel to a UserControl but it's not showing up.

Here's my code:

Adding the UserControl (to another UserControl -- i.e. QuickStartControl):

    public partial class QuickStartControl : UserControl
    {
        public QuickStartControl()
        {
            InitializeComponent();
            this.Load += new EventHandler(QuickStartControl_Load);
        }

        private void QuickStartControl_Load(object sender, EventArgs e)
        {
            MasterFlowLayoutPanel masterFlow = new MasterFlowLayoutPanel();
            masterFlow.Dock = DockStyle.Top;
            masterFlow.BackColor = Color.Black;
            this.Controls.Add(masterFlow);
        }
    }

Adding the panel to the MasterFlowLayoutPanel UserControl:

    public partial class MasterFlowLayoutPanel : UserControl
    {
        public MasterFlowLayoutPanel()
        {
            InitializeComponent();
            this.Load += new EventHandler(MasterFlowLayoutPanel_Load);
        }

        private void MasterFlowLayoutPanel_Load(object sender, EventArgs e)
        {
            AddInitialSafeguardFlowLayoutPanel();
        }

        public void AddInitialSafeguardFlowLayoutPanel()
        {
            Panel p = new Panel();
            p.Location = new Point(0, 0);
            p.Size = new Size(100, 100);
            p.Dock = DockStyle.Fill;
            p.Anchor = AnchorStyles.Left | AnchorStyles.Right;
            p.BackColor = Color.Red;
            this.Controls.Add(p);
	}
    }

The panel won't show up. Any idea why?

 

[Borvik]

gibb99, could explain what you mean by the panel "not showing up"?

I used your classes exactly as specified, and then added QuickStartControl to a form and got this:

Your code seems to work fine, other than the fact that by setting the Anchor of the Panel in the MasterFlowLayoutPanel AFTER the Dock - it clears the Dock property.

 

[phinoppix]

When you add a control programatically, you need to set every property to make sure you create the desired behavior. That includes the Visible property.

So try to set the Visible property on each of the 2 places where you called Control.Add()