In this example we explain that how to fetch value of
disabled textbox in asp.net.or how to retrieving value of disabled Asp.Net textbox.
Or how to get disabled textbox value in C#.
.net cannot get value from disabled or read-only
textbox control so how to get new updated value of disabled textbox in asp.net
in code behind.
For example suppose I have 3 textbox price, quantity
and total. The value of the total textbox is disabled because of the total is automatically
calculated based on the quantity and price.so when we update the quantity or
price the total will be calculated proper but when we click on save button it
will retrieve or fetch always its old or previous values because of the textbox
disabled.so to overcome this problem we have to add one more HiddenField that
will store the updated value of the disabled textbox(total textbox value) and
when user click on save button at that time we have to insert HiddenField value
so it will always save the latest or updated value of the disabled textbox.
Below is the example that will demonstrate the how to
retrieved or fetch the updated value of the disabled or read-only textbox and
save it into the database.
DisbaledTextbox.aspx:
<%@
Page Language="C#" AutoEventWireup="true" CodeFile="DisabledTextbox.aspx.cs"
Inherits="DisabledTextbox"
%>
<!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">
<script
type="text/javascript">
function
CalculateTotal() {
var
price = document.getElementById('<%= txtprice.ClientID %>').value;
var
qty = document.getElementById('<%=
txtquantity.ClientID %>').value;
if
(qty != "") {
var
total = (parseInt(price) * parseInt(qty)).toString();
document.getElementById('<%=
txttotal.ClientID %>').value
= total;
document.getElementById('<%=
hdntotal.ClientID %>').value
= total;
}
}
</script>
<title>Retrieving value of disabled ASP.NET textbox</title>
</head>
<body>
<form
id="form1"
runat="server">
Price:
<asp:TextBox ID="txtprice"
runat="server"
onblur="javascript:CalculateTotal();"></asp:TextBox>
Qty:
<asp:TextBox ID="txtquantity"
runat="server"></asp:TextBox>
Total:
<asp:TextBox ID="txttotal"
Enabled="false"
runat="server"></asp:TextBox>
<asp:HiddenField ID="hdntotal"
runat="server"
/>
<asp:Button ID="btnsubmit"
runat="server"
Text="Save"
OnClick="btnsubmit_Click"
/>
</form>
</body>
</html>
DisbaledTextbox.aspx.cs:
using System;
using
System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using
System.Web.UI.WebControls;
public partial class DisabledTextbox : System.Web.UI.Page
{
protected void
Page_Load(object sender, EventArgs e)
{
}
protected void
btnsubmit_Click(object sender, EventArgs e)
{
ClientScript.RegisterStartupScript(this.Page.GetType(), "alert",
"alert('Value of Hiddenfield ="+hdntotal.Value
+ "');", true);
ClientScript.RegisterStartupScript(this.Page.GetType(), "alert1",
"alert('Value of Disabled TextBox ="
+ txttotal.Text + "');", true);
}
}
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