asp.net

Question

My problem is that I m unable to add the values of runtime generated textboxes in asp.net ??

I have done it through javascript function but it's value get lost on simple page postback i want to do the same through c# code please help ???

 

 

 

Following are codes i have used 

 

<%@ Page Title="Home Page" Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true"

CodeFile="Default.aspx.cs" Inherits="_Default" %>

<asp:Content ID="HeaderContent" runat="server" ContentPlaceHolderID="HeadContent">

<script>

var intTextBox = 0;

//FUNCTION TO ADD TEXT BOX ELEMENT

function addElement() {

intTextBox = intTextBox + 1;

var contentID = document.getElementById('content');

var newTBDiv = document.createElement('div');

newTBDiv.setAttribute('id', 'intData' + intTextBox);

newTBDiv.innerHTML = "<center>L <input type='text' value='0' size='1' id='intHeight" + intTextBox + "' name='intHeight" + intTextBox + "'/>" + "B <input type='text' value='0' size='1' id='intWidth" + intTextBox + "' name='intWidth" + intTextBox + "'/>" + "H <input type='text' value='0' size='1' id='intBreadth" + intTextBox + "' name='intBreadth" + intTextBox + "'/>" + "Pcs <input type='text' value='0' size='1' id='intPcs" + intTextBox + "' name='intPcs" + intTextBox + "'/></center>";

contentID.appendChild(newTBDiv);

document.frm.txtMutiVolumetric.value = intTextBox;

}

//FUNCTION TO REMOVE TEXT BOX ELEMENT

function removeElement() {

if (intTextBox != 0) {

var contentID = document.getElementById('content');

contentID.removeChild(document.getElementById('intData' + intTextBox));

intTextBox = intTextBox - 1;

document.frm.txtMutiVolumetric.value = intTextBox;

}

}

function sendInfo() {

var intTotal;

intTotal = 0;

for (i = 1; i <= intTextBox; i++) {

intTotal = intTotal + parseFloat(document.getElementById('intHeight' + i).value) * parseFloat(document.getElementById('intPcs' + i).value) * parseFloat(document.getElementById('intWidth' + i).value) * parseFloat(document.getElementById('intBreadth' + i).value);

}

intTotal = Math.pow(intTotal, 1 / 3);

var txtTLength = document.getElementById("<%=txtTLength.ClientID%>");

var txtTBreadth = document.getElementById("<%=txtTBreadth.ClientID%>");

var txtTHeight = document.getElementById("<%=txtTHeight.ClientID%>");

txtTLength.value = intTotal;

txtTBreadth.value = intTotal;

txtTHeight.value = intTotal;

}

</script>

</asp:Content>

<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">

<asp:TextBox ID="txtAdd" runat="server"></asp:TextBox>

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

<br />

<br />

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

</asp:Panel>

<br />

<br />

<div id="content">

</div>

<br />

<br />

<a href="javascript:addElement();"><strong><font color="#000000">Add</font> </strong>

</a>||<a href="javascript:removeElement();"><strong><font color="#000000">Remove</font></strong></a>||<a

href="javascript:sendInfo();"><strong><font color="#000000">Calculate</font></strong></a>

<div id="Div1">

</div>

<br />

<br />

L&nbsp;<asp:TextBox ID="txtTLength" runat="server" Width="85px" MaxLength="10" placeholder="L"

ReadOnly="true"></asp:TextBox>

x B &nbsp;<asp:TextBox ID="txtTBreadth" runat="server" Width="85px" MaxLength="10"

placeholder="B" ReadOnly="true"></asp:TextBox>

x H &nbsp;<asp:TextBox ID="txtTHeight" runat="server" Width="85px" MaxLength="10"

placeholder="H" ReadOnly="true"></asp:TextBox>&nbsp;(In cm)

</asp:Content>

 

 

 

 

C# code 

 

 

 

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

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

{

protected void Page_Load(object sender, EventArgs e)

{

}

protected void Button1_Click(object sender, EventArgs e)

{

int count = Convert.ToInt32(txtAdd.Text.Trim());

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

{

Label MyLabel = new Label();

TextBox text1 = new TextBox();

MyLabel.ID = "MyLabel" + i + 1;

text1.ID = "Text" + i + 1;

text1.Text = "0";

MyLabel.Text = "L";

pnlTextBoxes.Controls.Add(new LiteralControl("&nbsp;&nbsp;"));

pnlTextBoxes.Controls.Add(MyLabel);

pnlTextBoxes.Controls.Add(text1);

Label MyLabel2 = new Label();

TextBox text2 = new TextBox();

MyLabel2.ID = "MyLabel" + i + 2;

text2.ID = "Text" + i + 2;

text2.Text = "0";

MyLabel2.Text = "B";

pnlTextBoxes.Controls.Add(new LiteralControl("&nbsp;&nbsp;"));

pnlTextBoxes.Controls.Add(MyLabel2);

pnlTextBoxes.Controls.Add(text2);

Label MyLabel3 = new Label();

TextBox text3 = new TextBox();

MyLabel3.ID = "MyLabel" + i + 3;

text3.ID = "Text" + i + 3;

text3.Text = "0";

MyLabel3.Text = "H";

pnlTextBoxes.Controls.Add(new LiteralControl("&nbsp;&nbsp;"));

pnlTextBoxes.Controls.Add(MyLabel3);

pnlTextBoxes.Controls.Add(text3);

Label MyLabel4 = new Label();

TextBox text4 = new TextBox();

MyLabel4.ID = "MyLabel" + i + 4;

text4.ID = "Text" + i + 4;

text4.Text = "0";

MyLabel4.Text = "Pcs";

pnlTextBoxes.Controls.Add(new LiteralControl("&nbsp;&nbsp;"));

pnlTextBoxes.Controls.Add(MyLabel4);

pnlTextBoxes.Controls.Add(text4);

pnlTextBoxes.Controls.Add(new LiteralControl("&nbsp;&nbsp;"));

//Add a spacer in the form of an HTML <br /> element.

pnlTextBoxes.Controls.Add(new LiteralControl("<br />"));

}

}

}