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Creating dynamic textbox

Posted by Vijayar under C# on 6/21/2011 | Points: 10 | Views : 145356 | Status : [Member] | Replies : 9
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Hi
i want r\to create a dynamic textbox on clicking on button
.please help me to do this with ex

vijaya

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Posted by: Ndebata on: 6/21/2011 [Member] Starter | Points: 25

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On click event of button create a TextBox and add to the control collection 
TextBox tb=new TextBox();

Panel1.Controls.Add(tb);


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Posted by: Naimishforu on: 6/21/2011 [Member] [MVP] Bronze | Points: 25

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private System.Windows.Forms.TextBox[] textboxes;



textboxes = new System.Windows.Forms.TextBox[2];

int cnt=0;

foreach (System.Windows.Forms.TextBox textbox in textboxes)

{

      // the location on the form. you may need to play with this

      // and it should change for each textbox

      textbox.Location = new System.Drawing.Point(88, 50); 

      textbox.Name = "textbox"+cnt.ToString();

      textbox.Size = new System.Drawing.Size(173, 20);

      textbox.TabIndex = cnt;

      textbox.Visible = true; 

      cnt++;

}


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Posted by: Vijayar on: 6/21/2011 [Member] Starter | Points: 25

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Hi

i am not getting textbox by using theis code.i tried already
<tr>
<td>
Program Interested
</td>
<td>
<asp:TextBox ID="txtprogram" runat="server" CssClass="txtbox"></asp:TextBox>
</td>
<asp:Panel ID="p1" runat="server">
<td> <asp:ImageButton ID="img1" runat="server" ImageUrl="~/images/btn_add.gif"
onclick="img1_Click" /></td></asp:Panel>

protected void img1_Click(object sender, ImageClickEventArgs e)
{
TextBox tb = new TextBox();

p1.Controls.Add(tb);


}

where is my mistake


vijaya

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Posted by: Ndebata on: 6/21/2011 [Member] Starter | Points: 25

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Your ASPX is not properly defined. 
<table>

<tr>

<td>

Program Interested

</td>

<td>

<asp:TextBox ID="txtprogram" runat="server" CssClass="txtbox"></asp:TextBox>

</td>

<td> <asp:ImageButton ID="img1" runat="server" ImageUrl="~/images/btn_add.gif"

onclick="img1_Click" />

<asp:Panel ID="p1" runat="server"></asp:Panel></td></tr>

</table>


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Posted by: Lakn2 on: 6/21/2011 [Member] Starter | Points: 25

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first place literal control or placeholder control or panel control in asp.net page
in button1 click event write 
textbox tb=new textbox();

literal1.controls.add(tb);

or

placeholder1.controls.add(tb);


Thanks&Regards
LakshmiNarayana Nalluri.

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Posted by: Vijayar on: 6/21/2011 [Member] Starter | Points: 25

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Hi
After clicking on Add button for first time iam getting a textbox,but when i click again i am not getting the textbox for second time,How to get it for second,third....time


vijaya

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Posted by: Vijayar on: 6/21/2011 [Member] Starter | Points: 25

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Hi
After clicking on Add button for first time iam getting a textbox,but when i click again i am not getting the textbox for second time,How to get it for second,third....time and i should get the textbos below txtprogram only

vijaya

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Posted by: Susanthampy on: 6/21/2011 [Member] [MVP] Bronze | Points: 25

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ASPX



<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebApplication1._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>Untitled Page</title>

</head>

<body>

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

    <div>

        <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Add Textbox" />

        <asp:Panel ID="Panel1" runat="server" >

        

        </asp:Panel>            

        </div>

    </form>

</body>

</html>


C# 

using System;

using System.Web.UI.WebControls;

using System.Collections.Generic;



namespace WebApplication1

{

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

    {

        private List textboxes;



        protected void Page_Load(object sender, EventArgs e)

        {

            

            PreRender += new EventHandler(_Default_PreRender);





            textboxes = new List();



            if(IsPostBack)

            {

                //recreate Textboxes

                int count = Int32.Parse(ViewState["tbCount"].ToString());



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

                {

                    TextBox tb = new TextBox();

                    tb.ID = "tb" + i;



                    Panel1.Controls.Add(tb);



                    textboxes.Add(tb);



                    tb.Text = Request.Form[tb.ClientID];

                }

            }

        }       



        protected void Button1_Click(object sender, EventArgs e)

        {

            //create new textbox

            TextBox tb = new TextBox();

            tb.ID = "tb" + textboxes.Count;

                        

            Panel1.Controls.Add(tb);



            textboxes.Add(tb);

        }



        void _Default_PreRender(object sender, EventArgs e)

        {

            //remember how many textboxes we had

            ViewState["tbCount"] = textboxes.Count;

        }

    }

}


Regards,
Susan

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Posted by: Susanthampy on: 6/21/2011 [Member] [MVP] Bronze | Points: 25

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hi ,


http://www.aspsnippets.com/Articles/Creating-Dynamic-TextBox-Controls-in-ASP.Net.aspx

Regards,
Susan

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