How to add controls(components) to a form at design time?

I add a stringproperty "AllLabels" to a class named "BaseForm",which inherite from System.Windows.Forms.Form,I want implement when I set the property "AllLabels" to "AAA;BBB;CCC" at design time(from the propertyGrid of the form),and there will be three new Labels which named "AAA","BBB","CCC" added to the form.

I had create an UITypeEditor bind to the property,override the EditValue method,in this method:

IDesignerHost host = (IDesignerHost)provider.GetService(typeof(IDesignerHost));



IContainer container = host.Container;



Label lbl = new Label();



lbl.Text = value.ToString();







container.Add(lbl);



return value;

I couldn't see any label in the from and the designer.cs code will be

private void InitializeComponent()



{



    this.label1 = new System.Windows.Forms.Label();



    this.SuspendLayout();



    // 



    // label1



    // 



    this.label1.AutoSize = true;



    this.label1.Location = new System.Drawing.Point(0, 0);



    this.label1.Name = "label1";



    this.label1.Size = new System.Drawing.Size(41, 12);



    this.label1.TabIndex = 0;



    this.label1.Text = "label1";



    // 



    // Form2



    // 



    this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);



    this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;



    this.ClientSize = new System.Drawing.Size(465, 452);



    this.Name = "Form2";



    this.Text = "Form2";



    this.ResumeLayout(false);



    this.PerformLayout();







}







private System.Windows.Forms.Label label1;

but if I drag a Label from toolbox,the designer.cs will be

private void InitializeComponent()



{



    this.label1 = new System.Windows.Forms.Label();



    this.SuspendLayout();



    // 



    // label1



    // 



    this.label1.AutoSize = true;



    this.label1.Location = new System.Drawing.Point(0, 0);



    this.label1.Name = "label1";



    this.label1.Size = new System.Drawing.Size(41, 12);



    this.label1.TabIndex = 0;



    this.label1.Text = "label1";



    // 



    // Form2



    // 



    this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);



    this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;



    this.ClientSize = new System.Drawing.Size(465, 452);


    //this line is the difference
    this.Controls.Add(this.label1);  


    this.Name = "Form2";



    this.Text = "Form2";



    this.ResumeLayout(false);



    this.PerformLayout();







}







private System.Windows.Forms.Label label1;

How can I implement this just by program just like I drag a component from the toolbox?

and when reset the property value to "AAA;BBB",the third label will be removed from form control collection.

please help me,thanks

How to add controls(components) to a form at design time?

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