N久前写的一个基于1.1的ASP.NET登录复合控件

代码如下：

using System;

using System.ComponentModel; //大多和可视化相关

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

namespace Complex

{

/*

*Login是本控件的默认事件，[DefaultEvent("Login")]

如果在设计器上双击此控件，将会自动生成Login的事件响应

*/

[DefaultEvent("Login")]

public class LoginControl :

System.Web.UI.WebControls.WebControl,

System.Web.UI.INamingContainer

//实现System.Web.UI.INamingContainer接口

//此接口无任何成员，只要控件类实现了

//此接口，就具备，控件ID + 冒号 + 内部控件ID

//作为客户端HTML标记name属性,而控件ID + 下划线

//+ 内部控件ID作为客户端HTML标记id属性的功能

{

private TextBox txtUserName;

private TextBox txtPassword;

private Button btnLogin;

public LoginControl()

{

//确保控件被拖放到ASP.NET设计器的时候，

//马上创建子控件

this.EnsureChildControls();

}

protected override void CreateChildControls()

{

this.Controls.Clear();

this.txtUserName = new TextBox();

this.txtUserName.ID = "TxtUserName";

this.txtUserName.Width = Unit.Parse("100px");

this.txtPassword = new TextBox();

this.txtPassword.ID = "TxtPassword";

this.txtPassword.TextMode = TextBoxMode.Password;

this.txtPassword.Width = Unit.Parse("100px");

this.btnLogin = new Button();

this.btnLogin.ID = "BtnLogin";

this.btnLogin.Text = "登陆";

this.Controls.Add(new LiteralControl("<table><tr><td>用户名</td><td>"));

this.Controls.Add(this.txtUserName);

this.Controls.Add(new LiteralControl("</td></tr><tr><td>密码</td><td>"));

this.Controls.Add(this.txtPassword);

this.Controls.Add(new LiteralControl("</td></tr><tr><td colspan=\"2\" align=\"right\">"));

this.Controls.Add(this.btnLogin);

this.Controls.Add(new LiteralControl("</td></tr></table>"));

this.ChildControlsCreated = true;

}

[

Category("登陆"), //设置属性窗口（按类别察看）中，属性的类别

Description("获取或设置用户名") //设置属性窗口下方对该属性的文本提示

]

public virtual string UserName

{

get

{

return this.txtUserName.Text;

}

set

{

this.txtUserName.Text = value;

}

}

[

Category("登陆"), //设置属性窗口（按类别察看）中，属性的类别

Description("获取或设置密码") //设置属性窗口下方对该属性的文本提示

]

public virtual string Passord

{

get

{

return this.txtPassword.Text;

}

set

{

this.txtPassword.Text = value;

}

}

protected override bool OnBubbleEvent(object source, EventArgs args)

{

if(source == this.btnLogin)

{

EventHandler handler =

(EventHandler)this.Events[keyLogin];

if(handler != null)

handler(this, EventArgs.Empty);

return true;

}

return base.OnBubbleEvent (source, args);

}

private readonly static object keyLogin = new object();

[

Category("登陆"), //设置事件窗口（按类别察看）中，属性的类别

Description("当用户点击登陆按钮的时候触发") //设置事件窗口下方对该属性的文本提示

]

public event EventHandler Login

{

add

{

this.Events.AddHandler(keyLogin, value);

}

remove

{

this.Events.RemoveHandler(keyLogin, value);

}

}

}

}