Generate controls at run time.

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Generate controls at run time.

Posts under the topic: Generate controls at run time.

Posted: 11/7/2009

naval pandey

192 points Lurker

Joined on: 10/23/2009
Posts: 20

hi all,

I want to add dynamically control on my page on a click of a button.

Can any one help me?

Thanks in advance.

tags server side controls

Naval Kishor Pandey

Posted: 11/7/2009

Vijendra Shakya

2841 points Contributor

Joined on: 11/29/2008
Posts: 62

Answered

naval198409 said:
I want to add dynamically control on my page on a click of a button.

Naval,

If u want to generate textbox dynamically on button click

following is the code for .aspx side:

    <div>
    <asp:TextBox runat="server" ID="txtadd" ></asp:TextBox>
    <asp:Button ID="btnAdd" runat="server" Text="Create" onclick="btnAdd_Click" />
    <asp:Panel ID="pnlText" runat="server"></asp:Panel>
    </div>

code for code behind file:

     protected void btnAdd_Click(object sender, EventArgs e)
            {
                for (int i = 0; i < Convert.ToInt32(txtadd.Text); i++)
                {
                    TextBox txt = new TextBox();
                    txt.Width = 300;
                    txt.Height = 50;
                    txt.ID = "txtbox" + i;
                    txt.TextMode = TextBoxMode.MultiLine;
                    pnlText.Controls.Add(txt);
                }
            }

For more please follow following links:
http://codeasp.net/blogs/Vijjendra/microsoft-net/71/dynamically-genearte-textbox-at-runtime-in-aspnet

tags textbox

Posted: 11/7/2009

naval pandey

192 points Lurker

Joined on: 10/23/2009
Posts: 20

i want to add a new control in a new line the code you had provided me added the control in a single line

so how we add a new control

in a new line

please provide me a solutions

thanks

in advance

naval kishor pandey

Naval Kishor Pandey

Posted: 11/7/2009

Raghav Khunger

16813 points Guru

Joined on: 4/19/2009
Posts: 490

Answered

Hi,

naval198409 said:
i want to add a new control in a new line

Modifying few lines of code of above poster code:

In Aspx

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
	<title></title>
</head>
<body>
	<form id="form1" runat="server">
	<div>
		<asp:TextBox runat="server" ID="txtadd"></asp:TextBox>
		<asp:Button ID="btnAdd" runat="server" Text="Create" OnClick="btnAdd_Click" />
		<asp:Panel ID="pnlText" runat="server">
		</asp:Panel>
	</div>
	</form>
</body>
</html>

In Code Behind

using System;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace TestProject
{
    public partial class AddingControlsDynamically : System.Web.UI.Page
    {

        protected void btnAdd_Click(object sender, EventArgs e)
        {
            for (int i = 0; i < Convert.ToInt32(txtadd.Text); i++)
            {
                TextBox txt = new TextBox
                                  {
                                      Width = 300,
                                      Height = 50,
                                      ID = string.Format("txtbox{0}", i),
                                      TextMode = TextBoxMode.MultiLine
                                  };
                LiteralControl hcBreak = new LiteralControl ("<br/>");
                pnlText.Controls.Add(hcBreak);
                pnlText.Controls.Add(txt);
            }
        }
    }
}

And here is the output when you put 4 in textbox and press Create button

Thanks,

Raghav

tags c#, web controls

[<a href="https://mvp.support.microsoft.com/profile/Raghav">ASP.NET MVP</a>] [<a href="https://www.microsoftcommunitycontributor.com">Microsoft® Community Contributor</a>] [<a href="http://www.dzone.com/aboutmvb">Dzone MVB</a>] [<a href="https://twitter.com/#!/RaghavKhunger">Follow me on Twitter</a>] [<a href="http://codeasp.net/wiki/view/10/how-to-ask-questions-on-forums">How to ask questions on forums</a>] "Success does not come to those who wait . . . and it does not wait for anyone to come to it." Anonymous "Success is simply a matter of luck. Ask any failure." Anonymous

Posted: 11/9/2009

Vincent Maverick Durano

8338 points Professional

Joined on: 4/15/2009
Posts: 424

Answered

naval198409 said:

i want to add a new control in a new line the code you had provided me added the control in a single line

so how we add a new control

in a new line

please provide me a solutions

I have written a sample demo below that you might be interesed with:

FAQ: Dynamically Adding Rows in ASP Table on Button Click event

Dynamically Adding TextBox Control to ASPNET Table

Here's another example: Adding Dynamic Rows in ASP.Net GridView Control with TextBoxes

Vincent Maverick Durano, MVP

Posted: 12/30/2009

Raghav Khunger

16813 points Guru

Joined on: 4/19/2009
Posts: 490

naval198409 said:

Hi i want to craete web sevice which interact with the hardware deivice like webcam on client side
thanks in advance
naval kishor pandey

Pleae post your new query in new thread.

Posted: 6/6/2011

ramakrishnamraju mudunuri

125 points Lurker

Joined on: 5/24/2011
Posts: 9

but when u generated the controls in run time, u can't find the controls after post back :(

so in every page load u have to generate/regenerate the controls with the same id's to capture the values enter in the dynamically generated controls.

Virtual Dotnet.
Get code samples and source code.
http://www.virtualdotnet.com

Posted: 6/6/2011

Hajan Selmani

8505 points Professional

Joined on: 5/3/2010
Posts: 391

ramakrishnamraju, this is an old thread. I think the best would be to open new thread for your questions/issues...

Thanks,
Hajan

Don't forget to Mark As Answer the answers that helped you solve your issue

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