关于自定义属性的问题

我从TextBox继承后形成一个自定义的控件,加了一个属性,这个property有默认值,我怎么才能把这个控件放到窗体上后,就自动产生一行设置这个属性的代码?还有就是在我更改这个属性值的时候这行代码也会跟着改变,谢谢.代码如下,请各位给以查看.

using System;
using System.ComponentModel;
using System.Collections;
using System.Diagnostics;
using System.Windows.Forms;

namespace XKSys.View
{
/// <summary>
/// XKTextBox 的摘要说明。
/// </summary>
public enum TypeInputFilter
{
Int,Float,Letter,LetterOrDigit,AnyChar
}
public class XKTextBox : System.Windows.Forms.TextBox
{
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.Container components = null;
TypeInputFilter inputfilter=TypeInputFilter.AnyChar;
private System.Windows.Forms.KeyPressEventHandler curEvent=null;

public XKTextBox(System.ComponentModel.IContainer container)
{
///
/// Windows.Forms 类撰写设计器支持所必需的
///
container.Add(this);
InitializeComponent();

//
// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
//
}

public XKTextBox()
{
///
/// Windows.Forms 类撰写设计器支持所必需的
///
InitializeComponent();

//
// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
//
}

/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if(components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}

[DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
[DefaultValue(XKSys.View.TypeInputFilter.AnyChar)]
public TypeInputFilter InputFilter
{
get
{
return inputfilter;
}
set
{
inputfilter=value;

this.KeyPress -= this.curEvent;
if(value!=TypeInputFilter.AnyChar)
this.ImeMode=System.Windows.Forms.ImeMode.Disable;

if (inputfilter==TypeInputFilter.Int)
this.curEvent= new System.Windows.Forms.KeyPressEventHandler(this.Int_KeyPress);

if (inputfilter==TypeInputFilter.Float)
this.curEvent= new System.Windows.Forms.KeyPressEventHandler(this.Float_KeyPress);

if (inputfilter==TypeInputFilter.Letter)
this.curEvent= new System.Windows.Forms.KeyPressEventHandler(this.Letter_KeyPress);

if (inputfilter==TypeInputFilter.LetterOrDigit)
this.curEvent= new System.Windows.Forms.KeyPressEventHandler(this.LetterOrDigit_KeyPress);

this.KeyPress+=this.curEvent;
}
}
private void Int_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)
{
if ((!(Char.IsNumber(e.KeyChar))&&e.KeyChar !=8&&e.KeyChar !=13&&e.KeyChar !=27&&e.KeyChar !=46)||e.KeyChar=='.')
{
e.Handled = true;
}
}


private void Float_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)
{
if (!(Char.IsNumber(e.KeyChar)) &&e.KeyChar !=8&&e.KeyChar !=13&&e.KeyChar !=27&&e.KeyChar !=46)
{
e.Handled = true;
}
}

private void Letter_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)
{
if ((!(Char.IsLetter(e.KeyChar))&&e.KeyChar !=8&&e.KeyChar !=13&&e.KeyChar !=27&&e.KeyChar !=46)||e.KeyChar=='.')
{
e.Handled = true;
}
}

private void LetterOrDigit_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)
{
if ((!(Char.IsLetterOrDigit(e.KeyChar))&&e.KeyChar !=8&&e.KeyChar !=13&&e.KeyChar !=27&&e.KeyChar !=46)||e.KeyChar=='.')
{
e.Handled = true;
}
}
#region 组件设计器生成的代码
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
components = new System.ComponentModel.Container();
}
#endregion
}
}