点一次按钮生成一个文本框，在线等！！！！！

用js写 createElement("input")，appendChild()

tePOS.ToString();
這是什麼?

回调刷新页面，当然就没有了···可以用session 或者 viewstate 保存状态··最好使用客户端生成文本框：<button onclick="addTextBox();" /><script>
function addTextBox()
{
document.getElementById("container").innerHTML += "<input type='text' /><br/>";
}
</script><div id="container">
</div>

        int Count
        {
            get
            {
                object o = ViewState["Count"];
                return o == null ? 0 : Convert.ToInt32(o);
            }
            set
            {
                ViewState["Count"] = value;
            }
        }
        protected void Page_Load(object sender, EventArgs e)
        {
            for (int i = 0; i < Count; i++)
            {
                TextBox tb = new TextBox();
                tb.ID = "TextBox" + i;
                Panel1.Controls.Add(tb);
            }
        }        protected void Button1_Click(object sender, EventArgs e)
        {
            Count++;
            TextBox tb = new TextBox();
            tb.ID = "TextBox" + Count;
            Panel1.Controls.Add(tb);
        }

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default"%><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Untitled Page</title>
    <script type="text/javascript">
    var i=0;
    function addtext()
{

var div1=document.getElementById("div1");
div1.innerHTML=div1.innerHTML+i+":<input type='text' id='"+i+"'><input type='checkbox' value=''/><br/>";
i=i+1;
}
function viewtext()
{
var div2=document.getElementById("div2");
var text1=document.getElementById("TextBox1");
for(var j=0;j<i;j++)
{
var text=document.getElementById(j+"");
div2.innerHTML=div2.innerHTML+text.value+"<br/>";
text1.value=text1.value+text.value+"<BR/>";
}
}
    </script>
</head>
<body>
<form runat="server" id="oye">
<input type="button" value="add text" onClick="addtext()">
<div id="div1"></div>
<input type="button" value="view" onClick="viewtext()">
<div id="div2" runat="server"></div>
    <asp:TextBox ID="TextBox1" runat="server" />
     <asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" /> 
</form>
</body>
</html>

11L的不算……这次把JS脚本生成和后台代码生成全部发出来……首先是前台代码——新建文件Default.aspx……
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default"
%><!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>
    <style type="text/css">
        <%--body
        {
        background-image: url(images/Energy Bliss.jpg);
        }--%>
    </style>
    <script language="javascript" type="">
        function panelview()
        {
            var divpanel=document.getElementById("div1");
//            var panel=document.getElementById("Panel1");
//            panel.style.display="block";
            divpanel.style.display="block";
//            var button=document.getElementById("Button2");
            var str="";
            var address="";
            var i=0;
            while(i<10)
            {
                address="address"+i;
                var num1=i+1;
                var num2=i+2;
                var num3=i+3;
                var num4=i+4;
                var num5=i+5;

                str=str+"<table><tr><td><input id='address"+num1+"' type='button' value='"+num1+"' onclick='addtext("+num1+")'/></td><td><input id='address"+num2+"' type='button' value='"+num2+"' onclick='addtext("+num2+")'/></td><td><input id='address"+num3+"' type='button' value='"+num3+"' onclick='addtext("+num3+")'/></td><td><input id='address"+num4+"' type='button' value='"+num4+"' onclick='addtext("+num4+")'/></td><td><input id='address"+num5+"' type='button' value='"+num5+"' onclick='addtext("+num5+")'/></td><td><a id='address"+num1+"'href='#' onclick='addtext("+num1+")'>"+num1+"</a></td><td><a id='address"+num1+"'href='#' onclick='addtext("+num1+")'>"+num1+"</a></td></tr></table><br/>";
                i=num5;
            }
            divpanel.innerHTML=str;
        }
        function addtext(i)
        {
            var button=document.getElementById("address"+i);
            var text=document.getElementById("Text1");
            text.value=button.value;
            var divpanel=document.getElementById("div1");
            divpanel.style.display="none";
        }
        function viewtext()
        {
            var text=document.getElementById("Text1").value;
            alert("你选择的是："+text);
        }
    </script>
</head>
<body>
<%--    <asp:LinkButton ID="LinkButton1" runat="server" Text="111" OnClick="LinkButton_Click"></asp:LinkButton>--%>
    <form id="form1" runat="server"><asp:ScriptManager id="ScriptManager1" runat="server">
        </asp:ScriptManager>
      <table>
            <tr>
                <td>
                    <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
                    <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Add" />
                    <asp:Button ID="Button3" runat="server" OnClick="Button3_Click" Text="add one" />
                    <asp:Button ID="Button2" runat="server" OnClick="Button2_Click" Text="View" />
                </td>
                <td rowspan="2">
                    <asp:Table ID="Table1" runat="server">
                    </asp:Table>
                    <asp:Label ID="Label2" runat="server"></asp:Label>
                </td>
            </tr>
            <tr>
                <td>
                    <table>
                        <asp:DataList ID="DataList1" runat="server">
                            <ItemTemplate>

                                    <tr>
                                        <td>
                                            <asp:Label ID="Label1" runat="server" Text='<%#DataBinder.Eval(Container.DataItem, "SelectID") %>'></asp:Label>
                                        </td>
                                        <td>
                                            <asp:TextBox ID="TextBox1" runat="server" Text='<%#DataBinder.Eval(Container.DataItem, "SelectContent")%>'></asp:TextBox>
                                        </td>
                                        <td>
                                            <INPUT type="checkbox" value='<%#DataBinder.Eval(Container.DataItem, "SelectID")%>' id="Checkbox1" runat="server">
                                        </td>
                                    </tr>

                            </ItemTemplate>
                        </asp:DataList></table>
                </td>
            </tr>
        </table>

        <asp:TextBox ID="TextBox3" runat="server" TextMode="Password" autocomplete="off" ></asp:TextBox>
                <asp:Label ID="TextBox2_HelpLabel" runat="server" />
                <ajaxToolkit:PasswordStrength ID="PasswordStrength2" runat="server" TargetControlID="TextBox3"
                    DisplayPosition="RightSide"
                    StrengthIndicatorType="BarIndicator"
                    PreferredPasswordLength="15"
                    HelpStatusLabelID="TextBox2_HelpLabel"
                    BarIndicatorCssClass="BarIndicator_TextBox2"
                    BarBorderCssClass="BarBorder_TextBox2"
                    MinimumNumericCharacters="1"
                    MinimumSymbolCharacters="1"
                    TextStrengthDescriptions="Very Poor;Weak;Average;Strong;Excellent"
                    RequiresUpperAndLowerCaseCharacters="true" />

</form>
</body>
</html>

后台代码……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 accp.zhaoxiaochun.Model;
using accp.zhaoxiaochun.BLL;public partial class _Default : System.Web.UI.Page
{

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {

                    }
        //this.DataGrid1.Items[0].FindControl("DataList1");
        //if (this.Panel1.Attributes["style"].Equals("block"))
        //{
        //    for (int i = 0; i < 10; i++)
        //    {
        //        Label label = new Label();
        //        label.Text = "  ";
        //        LinkButton linkbutton = new LinkButton();
        //        linkbutton.Text = i + "";
        //        this.Panel1.Controls.Add(linkbutton);
        //        this.Panel1.Controls.Add(label);
        //        linkbutton.Click += new EventHandler(linkbutton_Click);
        //    }
        //}
    }    //public void linkbutton_Click(object sender, EventArgs e)
    //{
    //    this.Text1.Value = ((LinkButton)sender).Text;
    //    //throw new Exception("The method or operation is not implemented.");
    //}
    //protected void Button1_Click(object sender, EventArgs e)
    //{
    //    //User_Info user = new User_Info();
    //    //user.UserID = 1;
    //    //user.LoginName = "111";
    //    //user.PassWord = "111";
    //    ////user.Email = "aaa";
    //    //user.Question = "aaa";
    //    //user.Result = "aaa";
    //    //user.UserType = true;
    //    //user.Re = "aaa";
    //    //User_InfoBLL userbll = new User_InfoBLL();
    //    //if (userbll.Insert(user) != 0)
    //    //{
    //    //    Response.Write("<script>alert('添加帐号成功');</script>");
    //    //}
    //    //else
    //    //{
    //    //    Response.Write("<script>alert('添加帐号失败');</script>");
    //    //}
    //}
    protected void Button1_Click(object sender, EventArgs e)
    {
        int no = Convert.ToInt32(this.TextBox2.Text);
        int id = 65;
        DataTable dt = new DataTable();
        DataColumn dc1 = new DataColumn("SelectID");
        DataColumn dc2 = new DataColumn("SelectContent");
        dt.Columns.Add(dc1);
        dt.Columns.Add(dc2);        for (int i = 0; i < no; i++)
        {
            dc1.DefaultValue = Convert.ToChar(id);
            dc2.DefaultValue = "";
            DataRow dr = dt.NewRow();
            dt.Rows.Add(dr);
            id = id + 1;
        }        this.DataList1.DataSource = dt;
        this.DataBind();
        ViewState.Add("dt",dt);
        ViewState.Add("id",id);
    }
    protected void Button2_Click(object sender, EventArgs e)
    {
        string str = "";
        for (int i = 0; i < this.DataList1.Items.Count; i++)
        {
            TableRow tr = new TableRow();
            TableCell tc1 = new TableCell();
            tc1.Text = ((Label)this.DataList1.Items[i].FindControl("Label1")).Text;
            TableCell tc2 = new TableCell();
            tc2.Text = ((TextBox)this.DataList1.Items[i].FindControl("TextBox1")).Text;
            TableCell tc3 = new TableCell();
            tc3.Text = ((HtmlInputCheckBox)this.DataList1.Items[i].FindControl("Checkbox1")).Value;
            tr.Cells.Add(tc1);
            tr.Cells.Add(tc2);
            tr.Cells.Add(tc3);
            this.Table1.Rows.Add(tr);
            if (((HtmlInputCheckBox)this.DataList1.Items[i].FindControl("Checkbox1")).Checked)
            {
                str = str + ((HtmlInputCheckBox)this.DataList1.Items[i].FindControl("Checkbox1")).Value;
                this.Label2.Text = "你选择的正确答案是：" + str;
            }
        }
    }
    protected void Button3_Click(object sender, EventArgs e)
    {
        if (ViewState["dt"] == null)
        {
            int id = 65;
            DataTable dt = new DataTable();
            DataColumn dc1 = new DataColumn("SelectID");
            DataColumn dc2 = new DataColumn("SelectContent");
            dt.Columns.Add(dc1);
            dt.Columns.Add(dc2);            //for (int i = 0; i < no; i++)
            //{
            //dc1.DefaultValue = Convert.ToChar(id);
            //dc2.DefaultValue = "";
            DataRow dr = dt.NewRow();
            dr[0] = Convert.ToChar(id);
            id = id + 1;
            dt.Rows.Add(dr);
            //    id = id + 1;
            //}            this.DataList1.DataSource = dt;
            this.DataBind();
            ViewState.Add("dt", dt);
            ViewState.Add("id", id);
        }
        else
        {
            int id = Convert.ToInt32(ViewState["id"]);
            DataTable dt = (DataTable)ViewState["dt"];
            DataRow dr = dt.NewRow();
            dr[0] = Convert.ToChar(id);
            dt.Rows.Add(dr);
            this.DataList1.DataSource = dt;
            this.DataBind();
            ViewState["id"] = id + 1;
        }
    }
}

写一个服务端的Table，然后，点一次按钮，给这个Table加一行，在这个行中的列里加一个TextBox控件；
你的TextBox的命名，以你Table行的总数+1；这样就不会重名；你在服务器端可以取，也可以加；

这是我在线测试添加试题是有时候不止A,B,C,D四个选项的答案，所以用了DataList和DataTable这么一种取巧的办法……参考下吧……

这个应该就可以，只是没有测试吧。
有基础错误：tb.ID = "TextBox" + i;
tb.ID = "TextBox" + Count;你改成：
tb.ID = "TextBox" + i.ToString();
tb.ID = "TextBox" + Count.ToString();就可以了

http://www.nlpxy.com/default.aspx
给个在线演示地址……刚上传的……第1个文本框是输入要产生的文本框数量，输入后点ADD就一下子产生了……add one按钮就是一个一个添加……view按钮就是把数据遍历显示……还有个文本框无视吧……是我测试ajax工具包密码强度控件用的……

string类重载了+运算符的，任何与字符串做+运算都会调用其ToString()方法
不信？自己试试吧

private static int i = 0;string idstr = string.Empty;    if(this.ViewState["controls"] != null)
      idstr = this.ViewState["controls"].ToString();    idstr += string.Format("{0}{1};", tePOS.ToString(); , i++);        string[] ids = idstr.Split(new char[] { ';' });    foreach (string id in ids)
    {
      TextBox tb = new TextBox();
      tb.ID = string.Format(id);
      tb.Text = tb.ID;
      this.panel.Controls.Add(tb);
    }    this.ViewState["controls"] = idstr;

                    'Dim str As String()
                    'str = objCtl.SeachCSMS_Print_Setup().Split(Chr(13))
                    'For i As Integer = 0 To str.Length - 1
                    '    If str(i).ToString().Trim <> "" Then
                    '        Dim ARow As New System.Web.UI.HtmlControls.HtmlTableRow
                    '        Dim bCell As New System.Web.UI.HtmlControls.HtmlTableCell
                    '        Dim label99 As New System.Web.UI.WebControls.Label
                    '        label99.ID = "Label" + (i + 99).ToString
                    '        label99.Attributes.Add("lang", "EN-US")
                    '        label99.Attributes.Add("style", "FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-family: 宋体")
                    '        label99.Text = str(i)
                    '        bCell.Controls.Add(label99)
                    '        ARow.Cells.Add(bCell)
                    '        Table3.Rows.Add(ARow)
                    '    End If
                    'Next上面是一个例子，瞅瞅

tePOS.ToString();
的值问题

调试易

点一次按钮生成一个文本框，在线等！！！！！

解决方案 »