JS动态添加的文本框，能否在回发之后，能够取得输入值，并且回发后，该文本框还能继续保持

mw515 2009-03-09 11:07:42

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limpid_123 2009-03-10

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mark

2002pine 2009-03-10

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在你的回发按钮上加上onclientclick事件, 在此js事件中，根据你动态加的文本框的ID，把它放到一个服务器端的隐藏文本中
然后在你的服务器的按钮事件中，调用这个隐藏文本值.

阿非 2009-03-10

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



<!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>无标题页</title>

    <script language="javascript" type="text/javascript">

    var count=0;

    function AddTextBox()

    {        

        var div=document.getElementById('div');

        div.insertAdjacentHTML("beforeEnd","<input type='text' id='txt"+count+"' name='txt"+count+"' /><br>");

        count++;

    }

    function SetValue()

    {

        document.getElementById('<%=hidCount.ClientID %>').value=count;       

    }

    </script>

</head>

<body>

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

    <div id="div">               

    </div>    

    <input type="button" id="btnAdd" value="增加" onclick="AddTextBox()" />

    <asp:Button ID="btnSubmit" runat="server" Text="提交" OnClientClick="SetValue()" OnClick="btnSubmit_Click" />

    <asp:HiddenField ID="hidCount" runat="server"  />    

    </form>

</body>

</html>



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.Collections.Generic;

using System.Text;





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

{

    protected void Page_Load(object sender, EventArgs e)

    {

        if (!IsPostBack)

        {

            hidCount.Value = "0";

        }

        //Response.Write(hidCount.Value+"<br>||<br>");        

    }

    protected void btnSubmit_Click(object sender, EventArgs e)

    {

        List<string> l = new List<string>();

        int count = 0;

        int.TryParse(hidCount.Value, out count);

        for (int i = 0; i < count; i++)

        {

            l.Add(string.IsNullOrEmpty(Request.Form["txt" + i.ToString()]) ? null : Request.Form["txt" + i.ToString()]);

        }

        StringBuilder sb = new StringBuilder();

        sb.Append("<script>document.getElementById('div').innerHTML=\"");

        for (int i = 0; i < l.Count; i++)

        {

            sb.Append("<input type='text' id='txt" + i + "' name='txt" + i + "' value='" + (l[i] == null ? "" : l[i]) + "' /><br>");

        }

        sb.Append("\";count=" + hidCount.Value + ";</script>");

        ClientScript.RegisterStartupScript(GetType(), "AddTextBox", sb.ToString());

    }

}

zzc205 2009-03-10

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需要模拟一下viewstate，把相关信息存到hiddenfiled来做保持和还原。

damdam91 2009-03-10

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不可避免要刷新

ustbwuyi 2009-03-09

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<body>

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

    <div>

        <div id="divTextBox">

        </div>

        <asp:Button ID="btnView" runat="server" Text="View" OnClick="btnView_Click" />

    </div>

    </form>



    <script language="javascript">

     document.getElementById("divTextBox").innerHTML='<input id="txtView" name="txtView" type=text />';

    </script>



</body>



 protected void btnView_Click(object sender, EventArgs e)

    {

        string value = Request.Form["txtView"].ToString();

        Response.Write(value);

    }