making a control from toolkit control

Question

I m trying to do a control .dll to add it to the toolbox and that means that i dont want to write any code in .aspx page, the problem is that the mask dont understand that it must mask the inheited textbox my teacher said to me that i must put it in container and there is  child control but i dont understand how

we must put it in container and use preRender if there is any help

i attached my code: here

under name

AjaxServerControl5 - Copy.rar

 or here is it:

MyTextBox.cs

 

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web;
using System.Web.UI;
using System.Web.Security;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;




namespace MariamTextBox
{
   public class MyTextBox :TextBox
    {

      
       private Masks masks = Masks.None;
  
       
       private AjaxControlToolkit.MaskedEditExtender mask = new AjaxControlToolkit.MaskedEditExtender();
       TextBox TextBox1 =new TextBox();


       //public AjaxControlToolkit.MaskedEditExtender Mask
       //{
       //    get
       //    {
       //        return this.mask;
       //    }
       //}

       public Masks masktype
       {
           get { return this.masks; }
           set { this.masks = value;
            switch (this.masks)
            {  
                case Masks.Date:
                    this.mask.TargetControlID = "TextBox1";
                    this.mask.Mask = Common.Common.DATE_TYPE;
                    this.mask.MaskType = AjaxControlToolkit.MaskedEditType.Date;
                    this.mask.OnFocusCssClass = Common.Common.ONFOCUSS_TYPE;
                    this.mask.OnInvalidCssClass = Common.Common.ONINVALID_TYPE;
                    this.mask.ErrorTooltipEnabled = true;
                    this.mask.MessageValidatorTip = true;
                    
                    break; 
                case Masks.Numeric:
                    this.mask.TargetControlID = "TextBox1";
                    this.mask.Mask = Common.Common.NUMERIC_TYPE;
                    this.mask.MaskType = AjaxControlToolkit.MaskedEditType.Date;
                    this.mask.OnFocusCssClass = Common.Common.ONFOCUSS_TYPE;
                    this.mask.OnInvalidCssClass = Common.Common.ONINVALID_TYPE;
                    this.mask.ErrorTooltipEnabled = true;
                    this.mask.MessageValidatorTip = true;
                    break;
                case Masks.Time:
                    this.mask.TargetControlID = "TextBox1";
                    this.mask.Mask = Common.Common.DATE_TYPE;
                    this.mask.MaskType = AjaxControlToolkit.MaskedEditType.Date;
                    this.mask.OnFocusCssClass = Common.Common.ONFOCUSS_TYPE;
                    this.mask.OnInvalidCssClass = Common.Common.ONINVALID_TYPE;
                    this.mask.ErrorTooltipEnabled = true;
                    this.mask.MessageValidatorTip = true;
                    break;
                default:
                    this.mask.TargetControlID = "";
                    this.mask.MaskType = AjaxControlToolkit.MaskedEditType.None;
                    this.mask.Mask = "";
                    break;


             
            }
         }
       }
       
    }
}

 the Common.resx
DATE_TYPE	99:99:99	
NUMERIC_TYPE	99/99/9999	
ONFOCUSS_TYPE	MaskedEditFocus	
ONINVALID_TYPE	MaskedEditError	
TIME_TYPE	99/99/9999
 
 the enum.cs
 namespace MariamTextBox
{
   
    public enum Masks { Numeric, Time, Date, None }
}
  
 Thanx a lot