Label doesnt exist in the current context
why m i getting this error "The name 'lblHelloWorld' does not exist in the current context"? How do i fix it?
<%@ Page Language="C#" AutoEventWireup="True" Inherits="_Default" Codebehind="Default.aspx.cs" %>
<!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 id="Head1" runat="server">
<title>Hello, world!</title>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="MainScriptManager" runat="server" />
<asp:UpdatePanel ID="pnlHelloWorld" runat="server">
<ContentTemplate>
<asp:Label runat="server" ID="lblHelloWorld" Text="Click the button!" />
<br /><br />
<asp:Button runat="server" ID="btnHelloWorld" OnClick="btnHelloWorld_Click" Text="Update label!" />
</ContentTemplate>
</asp:UpdatePanel>
</form>
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace ajaxTesting
{
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void btnHelloWorld_Click(object sender, EventArgs e)
{
lblHelloWorld.Text = "Hello, world - this is a fresh message from ASP.NET AJAX! The time right now is: " + DateTime.Now.ToLongTimeString();
}
}
}
I tried cleaning and rebuliding; deleting the designer.cs file and recreating it but was of no use.
Answer
I think the problem in your designer.cs file.Try to add a reference manually for this label in the designer.cs file.
EDIT:
The problem after revision to your code is in the name space.
To fix your problem::
Replace your line by this:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="ajaxTesting._Default" %>