So what is the overall goal of the control? Have you tried creating a
UserControl, instead of inheriting from Control, and using the designer to
create your control? This can be done by creating a "Windows Control
Library" project. Below, I have created a UserControl that contains a
ComboBox that is fixed to the bottom-left corner. I have tested this control
in a Windows Forms application as well as embedded in a web page and it
works as expected. I am using Windows 2000 Pro, VS.Net 2003 w/ .Net Fx 1.1
SP1, IE 6.

using System;
using System.Collections;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Windows.Forms;
namespace WindowsControlLibrary1
{
public class UserControl1 : System.Windows.Forms.UserControl
{
private System.Windows.Forms.ComboBox comboBox1;
public UserControl1()
{
InitializeComponent();
this.comboBox1.Location = new Point(0, (this.Height -
this.comboBox1.Size.Height));
this.comboBox1.Anchor = AnchorStyles.Bottom | AnchorStyles.Left;
}
protected override void Dispose( bool disposing )
{
if( disposing )
{
}
base.Dispose( disposing );
}
#region Component Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.comboBox1 = new System.Windows.Forms.ComboBox();
this.SuspendLayout();
//
// comboBox1
//
this.comboBox1.Font = new System.Drawing.Font("Arial", 27.75F,
System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point,
((System.Byte)(0)));
this.comboBox1.Location = new System.Drawing.Point(8, 8);
this.comboBox1.Name = "comboBox1";
this.comboBox1.Size = new System.Drawing.Size(72, 50);
this.comboBox1.TabIndex = 0;
//
// UserControl1
//
this.Controls.Add(this.comboBox1);
this.Name = "UserControl1";
this.Size = new System.Drawing.Size(100, 100);
this.ResumeLayout(false);
}
#endregion
}
}