实现动态添加控件的功能

Question

一个按钮，每按一次都会在页面上添加一个textbox控件，并能获取这些控件的值

Answer 1

new 一个textbox 然后给他复制ID+i(i是随机取一下)然后是this.control.add好像是这个。没开VS 你看看吧 有一个给页面添加控件的方法！

Answer 2

void add()
{
TextBox tb = new tb; 
this.Controls.Add(tb);
}

Answer 3

页面两个Button,一个增加TextBox,一个显示TextBox输入的值
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
            ViewState["n"] = "0";
        else
        {
            if (Convert.ToInt32(ViewState["n"]) > 0)
            {
                for (int i = 1; i <= Convert.ToInt32(ViewState["n"]); i++)
                {
                    TextBox t = new TextBox();
                    t.ID = "t" + i.ToString();
                    this.form1.Controls.Add(t);
                }            }
        }
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        ViewState["n"] = (Convert.ToInt32(ViewState["n"]) + 1).ToString();
        TextBox t = new TextBox();
        t.ID = "t"+ViewState["n"].ToString();
        this.form1.Controls.Add(t);
    }    protected void Button2_Click(object sender, EventArgs e)
    {
        for (int i = 1; i <= Convert.ToInt32(ViewState["n"]); i++)
        {
            Response.Write(((TextBox)FindControl("t"+i.ToString())).Text);
        }
    }

Answer 4

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

Answer 5

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);
        }
    }//添加事件
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>