使用反射把用户控件(ASCX)传至网页(ASPX)

用户控件向网页传递值,方法非常之多,此博文尝试使用反射来实现。在站点中,建一个网页以及一个用户控件。 网页切换至设计模式,拉用户控件至网页上。

Default.aspx:

使用反射把用户控件(ASCX)传至网页(ASPX) View Code
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>



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



<!DOCTYPE html>



<html xmlns="http://www.w3.org/1999/xhtml">

<head runat="server">

    <title></title>

</head>

<body>

    <form id="form1" runat="server">

        <div>

            <uc1:InsusUC ID="InsusUC1" runat="server" />

            <br />

            <br />

            Hi, You input infor as below:<br />

            first textbox value:

            <asp:Label ID="LabelshowFirstValue" runat="server" Text="" ForeColor="Red"></asp:Label><br />

            Second textbox value:

            <asp:Label ID="LabelshowLastValue" runat="server" Text="" ForeColor="Red" ></asp:Label>

        </div>

    </form>

</body>

</html>


Default.aspx.cs,建一个带两个参数的public方法。

使用反射把用户控件(ASCX)传至网页(ASPX) View Code
using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;



public partial class _Default : System.Web.UI.Page

{

    protected void Page_Load(object sender, EventArgs e)

    {



    }



    public void ReadUCMessage(string value1, string value2)

    {

        this.LabelshowFirstValue.Text = value1;

        this.LabelshowLastValue.Text = value2;

    }

}


接下来,我们创建一个用户控件:

使用反射把用户控件(ASCX)传至网页(ASPX) View Code
<%@ Control Language="C#" AutoEventWireup="true" CodeFile="InsusUC.ascx.cs" Inherits="InsusUC" %>

First Name <asp:TextBox ID="TextboxFirstName" runat="server"></asp:TextBox><br />

Last Name  <asp:TextBox ID="TextboxLastName" runat="server"></asp:TextBox><br />

<asp:Button ID="ButtonTransmit" runat="server" Text="Transmit" OnClick="ButtonTransmit_Click"  />


写铵钮事件,首先引用namespace  using System.Reflection;
有关type.InvokeMember()方法,可以参考msdn:http://msdn.microsoft.com/zh-cn/library/de3dhzwy(v=vs.80).aspx

使用反射把用户控件(ASCX)传至网页(ASPX) View Code
using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Reflection;



public partial class InsusUC : System.Web.UI.UserControl

{

    protected void Page_Load(object sender, EventArgs e)

    {



    }



    protected void ButtonTransmit_Click(object sender, EventArgs e)

    {

        string v1 = this.TextboxFirstName.Text.Trim();

        string v2 = this.TextboxLastName.Text.Trim();

        

        this.Page.GetType().InvokeMember("ReadUCMessage", BindingFlags.InvokeMethod, null, this.Page, new object[] { v1,v2 });

    }

}


演示:
使用反射把用户控件(ASCX)传至网页(ASPX)

 

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