读使用反射将业务对象绑定到 ASP.NET 窗体控件有感-控件新闻-慧都网

读使用反射将业务对象绑定到 ASP.NET 窗体控件有感

翻译|其它|编辑：郝浩|2007-09-13 11:52:02.000|阅读 994 次

概述：

将页面与实体关联的方法:我也写了一个

编辑控件前台 edit.ascx

<%@ Control Language="C#" AutoEventWireup="true" CodeFile="edit.ascx.cs" Inherits="edit" %>
<asp:Label ID="Label1" runat="server" Text="编号"></asp:Label>
<asp:TextBox ID="txtID" runat="server"></asp:TextBox>
<br />
<asp:Label ID="Label2" runat="server" Text="姓名"></asp:Label>
<asp:TextBox ID="txtName" runat="server"></asp:TextBox>
<br />
<asp:Label ID="Label3" runat="server" Text="密码"></asp:Label>
<asp:TextBox ID="txtPwd" runat="server"></asp:TextBox>
<br />
<asp:Button ID="btnOp" runat="server" Text="操作" />
<asp:Button ID="btnBack" runat="server" Text="返回" />

后台代码 edit.ascx.cs

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class edit : System.Web.UI.UserControl
...{
    public int UserId
    ...{
        set
        ...{
            this.txtID.Text = value.ToString();
        }
        get
        ...{
            if (this.txtID.Text != "")
                return int.Parse(this.txtID.Text);
            return 0;
        }
    }
    public string UserName
    ...{
        set
        ...{
            this.txtName.Text = value;
        }
        get
        ...{
                return this.txtName.Text;
        }
    }
    public string Password
    ...{
        set
        ...{
            this.txtPwd.Text = value.ToString();
        }
        get
        ...{
            return this.txtPwd.Text;
        }
    }
    protected void Page_Load(object sender, EventArgs e)
    ...{
        this.btnBack.Attributes.Add("onclick", "history.go(-1);");
    }
}

前台显示的后台代码 eidt.aspx.cs

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

using System.Reflection;

public partial class edit : System.Web.UI.Page
...{
    protected void Page_Load(object sender, EventArgs e)
    ...{
                  User user=new User(95,"test","test");
         PropertyInfo[] objProperties = user.GetType().GetProperties();
         PropertyInfo[] ctlProperties = this.Edit1.GetType().GetProperties();
         foreach (PropertyInfo objProperty in objProperties)
         ...{
             foreach (PropertyInfo ctlProperty in ctlProperties)
             ...{
                 if (objProperty.Name == ctlProperty.Name)
                 ...{
                     ctlProperty.SetValue(this.Edit1, objProperty.GetValue(user, null), null);

break;

                 }
             }
         }
    }
}

前台 eidt.aspx 代码

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="edit.aspx.cs" Inherits="edit" Debug="true" %>

<%@ Register Src="edit.ascx" TagName="edit" TagPrefix="uc1" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <uc1:edit id="Edit1" runat="server">
        </uc1:edit></div>
    </form>
</body>
</html>

实体类代码:

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

/**//// <summary>
/// Summary description for User
/// </summary>
public class User
...{
    "Fields and Properties"#region "Fields and Properties"
    private int userId;
    private string userName;
    private string password;
    public int UserId
    ...{
        get ...{ return userId; }
        set ...public string UserName
    ...{
        get ...{ return userName; }
        set ...public string Password
    ...{
        get ...{ return password; }
        set ...#endregion
    "Constructors"#region "Constructors"
    public User() ...{ }
    public User(int id, string name, string password)
    ...{
        this.UserId = id;
        this.UserName = name;
        this#endregion
}