当前文件： AjaxChat/Default.aspx.cs[2K，2009-6-12 11:31:35]，打开代码结构图

		            
 1using System;
 2using System.Collections;
 3using System.ComponentModel;
 4using System.Data;
 5using System.Drawing;
 6using System.Web;
 7using System.Web.SessionState;
 8using System.Web.UI;
 9using System.Web.UI.WebControls;
10using System.Web.UI.HtmlControls;
11
12namespace UChat.Pages
13...{
14    /**//// <summary>
15    /// Summary description for WebForm1.
16    /// </summary>
17    public class Default : System.Web.UI.Page
18    ...{
19        protected System.Web.UI.WebControls.Button btnLogin;
20        protected System.Web.UI.WebControls.Literal lblErrorMsg;
21        protected System.Web.UI.WebControls.TextBox txtUsername;
22    
23        private void Page_Load(object sender, System.EventArgs e)
24        ...{
25            // Put user code to initialize the page here
26            lblErrorMsg.Text = string.Empty;
27            txtUsername.Attributes.Add("onkeydown", 
28                "if(event.which || event.keyCode){if ((event.which == 13) || (event.keyCode == 13)) {document.getElementById('"+btnLogin.UniqueID+"').click();return false;}} else {return true}; ");
29        }
30
31        protected void Login( object sender, EventArgs e )
32        ...{
33            
34            string user = txtUsername.Text;
35
36            if( !ValidateNick( user ) ) return;
37
38            if( Global.Engine.UserExists( user ) )
39            ...{
40                lblErrorMsg.Text = "A user with this name already exists, try again.";
41                return;
42            }
43
44            Response.Redirect( "Server.aspx?action=Login&u=" + user );
45        }
46
47        bool ValidateNick( string nick )
48        ...{
49            if( nick == string.Empty )
50            ...{
51                lblErrorMsg.Text = "Please input your nickname here.";
52                return false;
53            }
54
55            foreach( char c in nick )
56            ...{
57                if( (int)c > 122 || (int)c < 65 )
58                ...{
59                    lblErrorMsg.Text = string.Format( "Nickname can only contain letters.  {0} is an invalid character", c );
60                    return false;
61                }
62            }
63
64            if( nick.Length > 10 )
65            ...{
66                lblErrorMsg.Text = "Nickname too long, please enter a nickname that is less than 10 characters";
67                return false;
68            }
69
70            return true;
71        }
72
73        Web Form Designer generated code#region Web Form Designer generated code
74        override protected void OnInit(EventArgs e)
75        ...{
76            //
77            // CODEGEN: This call is required by the ASP.NET Web Form Designer.
78            //
79            InitializeComponent();
80            base.OnInit(e);
81        }
82        
83        /**//// <summary>
84        /// Required method for Designer support - do not modify
85        /// the contents of this method with the code editor.
86        /// </summary>
87        private void InitializeComponent()
88        ...{    
89            this.btnLogin.Click += new System.EventHandler(this.Login);
90            this.Load += new System.EventHandler(this.Page_Load);
91
92        }
93        #endregion
94    }
95}
96