How to force a specific UserControl design

Question

I am writing a basic UserControl that will be inherited by a bunch of other UserControls. I need to provide a specific design for all these descendant controls (for example, a few buttons should be on top, along with a label or two).

The rest of the descendant UserControl area can freely have everything on it.

Initially, I thought that I could just flip the panel to Base UserControl, set Dock = Fill, and the descendant control developer would be forced to add the entire user interface to that panel. Then I can resize the panel to my content.

But this is not the case - when you drop a control (say, GridView) on a child of UserControl, it adds it to the .Controls collection of the user control of the child, not Panel I.

Is there a way to force a specific layout from a Base user control?

Answer 1

The short answer is “Yes” ... However, in order for this behavior to penetrate the ugly world of writing your own designers, which you need to associate with each control that needs to inherit a special placement in the content panel ..

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http://support.microsoft.com/?id=813808

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Answer 2

AngryHacker -

, , , , WinForm. , VB6:-).

, EnableDesignMode(). WinForm. , ParentControlDesigner, UserControl . ButtonBarDesigner Initialize(), , ButtonBar strong > fillPanel, "FillPanel".

, , . ButtonBar, . , , , , ButtonBar. , , EnableDesignMode() . DesignerSerializationVisibility FillPanel. .

System.Design .

, ButtonBar:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Drawing;
using System.Data;
using System.Text;
using System.Windows.Forms;
using System.Windows.Forms.Design;
using System.Threading;

namespace ForceUserControl
{
    [Designer(typeof(ButtonBarDesigner))]
    public partial class ButtonBar : UserControl
    {
        public ButtonBar()
        {
            InitializeComponent();
        }

        /// <summary>
        /// Returns inner panel.
        /// </summary>
        /// <remarks>Should allow persistence.</remarks>
        [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
        public Panel FillPanel
        {
            get { return fillPanel; }
        }

    }

    private class ButtonBarDesigner : ParentControlDesigner
    {
        public override void Initialize(IComponent component)
        {
        base.Initialize(component);

            Panel fillPanel = ((ButtonBar)component).FillPanel;

            // The name should be the same as the public property used to return the inner panel control.
            base.EnableDesignMode(fillPanel, "FillPanel");
        }
    }
}