如何动态添加textbox并且取值

Neil198 2009-03-25 12:18:47

如何在ASPX页面上通过按钮添加多个TEXTBOX，并且提交时可以获得值

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miaochangjiang 2011-11-09

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2樓正解

「已注销」 2010-05-29

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我也在找呢。。。

zhxingway 2010-05-21

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如:
HTML code



<asp:PlaceHolder ID="PlaceHolder1" runat="server">

            <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox><br />

            <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox><br />

            <asp:TextBox ID="TextBox3" runat="server"></asp:TextBox><br />

            <asp:TextBox ID="TextBox4" runat="server"></asp:TextBox><br />

            <asp:TextBox ID="TextBox5" runat="server"></asp:TextBox><br />

        </asp:PlaceHolder>

        

        <asp:Button ID="Button1" runat="server" Text="Button" onclick="Button1_Click" />

        <br />

        <asp:Label ID="Label1" runat="server" Text=""></asp:Label>

C# code



protected void Button1_Click(object sender, EventArgs e)

    {

        string result = string.Empty;

        foreach( Control ctrl in PlaceHolder1.Controls )

        {

            if (ctrl.GetType () == typeof (TextBox ))

            {

                TextBox tb = ctrl as TextBox;

                result = result + "," + tb.Text;

            }

        }



        if (result.Length > 0)

        {

            this.Label1.Text = result.Substring(1);

        }

    }

//添加事件

C# code 



private void AddBlurAttribute(Control cntrl)

    {

        if (cntrl.Controls.Count > 0)

        {

            foreach (Control childControl in cntrl.Controls)

            {

                AddBlurAttribute(childControl);

            }

        }



        if (cntrl.GetType() == typeof(TextBox))

        {

            TextBox tb = (TextBox)cntrl;

           

            tb.Attributes.Add("onBlur", ".....");            

        }

    }

我摘录的代码,给楼主看看哈.

源文档 <http://topic.csdn.net/u/20090325/12/4f891768-01ae-4b03-8a68-1f833964bf1e.html>

z392989029 2009-09-17

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学习。。。

feng9527 2009-09-03

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sandy945说的有点意思，可惜不完整！

feng9527 2009-09-03

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7楼是6楼的饼夫

moonshineidolon 2009-03-25

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页面中放置一个
protected System.Web.UI.WebControls.PlaceHolder PlaceHolderExamPaper;

在要加载文本框的位置写上：

TextBox TxtAnswer= new TextBox();
TxtAnswer.ID=文本框ID；

PlaceHolderExam.Controls.Add(TxtAnswer);

string stxt = ((TextBox)Page.findControl(文本框ID)).text ;

moonshineidolon 2009-03-25

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页面中放置一个
protected System.Web.UI.WebControls.PlaceHolder PlaceHolderExamPaper;

在要加载文本框的位置写上：

TextBox TxtAnswer= new TextBox();

PlaceHolderExam.Controls.Add(TxtAnswer);

huohua123 2009-03-25

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把动态生成的所有文本框命一个相同的名字。如：name="txt"
然后用js读取里面的值。





function getTxt() 

{ 

  var obj=document.getElementsByName("txt"); 

  var len=obj.length; 

  for(var i=0;i <len;i++) 

  { 

   var txtValue=obj[i].value; ---获得值

  } 

}

gongsun 2009-03-25

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CutBug 2009-03-25

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js添加input text,name相同,Request.Form["input's Name"]获得值

阿非 2009-03-25

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function AddTextBox()

    {        

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

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

        count++;

    }

insus 2009-03-25

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To 9楼:
再写一个方法:



 private void AddBlurAttribute(Control cntrl)

    {

        if (cntrl.Controls.Count > 0)

        {

            foreach (Control childControl in cntrl.Controls)

            {

                AddBlurAttribute(childControl);

            }

        }



        if (cntrl.GetType() == typeof(TextBox))

        {

            TextBox tb = (TextBox)cntrl;

           

            tb.Attributes.Add("onBlur", ".....");            

        }

    }

然后在page_Load中写上:
AddBlurAttribute(PlaceHolder1);

Neil198 2009-03-25

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如果我要给每个新加入的textbox都加上onblur事件，怎么做？

阿非 2009-03-25

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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());

    }

}

che2piaopiao 2009-03-25

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Insus.NET 正解

insus 2009-03-25

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如:



<asp:PlaceHolder ID="PlaceHolder1" runat="server">

            <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox><br />

            <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox><br />

            <asp:TextBox ID="TextBox3" runat="server"></asp:TextBox><br />

            <asp:TextBox ID="TextBox4" runat="server"></asp:TextBox><br />

            <asp:TextBox ID="TextBox5" runat="server"></asp:TextBox><br />

        </asp:PlaceHolder>

        

        <asp:Button ID="Button1" runat="server" Text="Button" onclick="Button1_Click" />

        <br />

        <asp:Label ID="Label1" runat="server" Text=""></asp:Label>



 protected void Button1_Click(object sender, EventArgs e)

    {

        string result = string.Empty;

        foreach( Control ctrl in PlaceHolder1.Controls )

        {

            if (ctrl.GetType () == typeof (TextBox ))

            {

                TextBox tb = ctrl as TextBox;

                result = result + "," + tb.Text;

            }

        }



        if (result.Length > 0)

        {

            this.Label1.Text = result.Substring(1);

        }

    }