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DanielHi, hopefully a very easy problem. Help is appreciated! I'm new to AJAX and C#, but fluent in ASP .NET VB.
I have MS AJAX extensions installed in Visual Web Developer 2008.
I took the very first example, which looks VERY straightforward and simple. Here's the code I used on both pages:
Default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_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 id="Head1" runat="server">
<title>Hello, world!</title>
</head>
<body>
<form id="form1" runat="server">
<asp
criptManager ID="MainScriptManager" runat="server" />
<asp:UpdatePanel ID="pnlHelloWorld" runat="server">
<ContentTemplate>
<asp:Label runat="server" ID="lblHelloWorld" Text="Click the button!" />
<br /><br />
<asp
utton runat="server" ID="btnHelloWorld" OnClick="btnHelloWorld_Click" Text="Update label!" />
</ContentTemplate>
</asp:UpdatePanel>
</form>
</body>
</html>
(exactly like the example)
And here's Default.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 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();
}
}
(Code was added for the button click event in the class)
There is a red line under lblHelloWorld.Text that error says:
Error 1 The name 'lblHelloWorld' does not exist in the current context C:\Users\Daniel\Documents\Visual Studio 2008\WebSites\WebSite4Ajax\Default.aspx.cs 13 9 C:\...\WebSite4Ajax\
When the page is run, there is a runtime error that says:
Compilation Error
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.
Compiler Error Message:
ASPNET: Make sure that the class defined in this code file matches the 'inherits' attribute, and that it extends the correct base class (e.g. Page or UserControl).
Source Error:
Line 6: using System.Web.UI.WebControls;
Line 7:
Line 8: public partial class Default : System.Web.UI.Page
Line 9: {
Line 10:
error on line 8.
Thanks kindly for helping with this.
Daniel
I have MS AJAX extensions installed in Visual Web Developer 2008.
I took the very first example, which looks VERY straightforward and simple. Here's the code I used on both pages:
Default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_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 id="Head1" runat="server">
<title>Hello, world!</title>
</head>
<body>
<form id="form1" runat="server">
<asp
criptManager ID="MainScriptManager" runat="server" /><asp:UpdatePanel ID="pnlHelloWorld" runat="server">
<ContentTemplate>
<asp:Label runat="server" ID="lblHelloWorld" Text="Click the button!" />
<br /><br />
<asp
utton runat="server" ID="btnHelloWorld" OnClick="btnHelloWorld_Click" Text="Update label!" /></ContentTemplate>
</asp:UpdatePanel>
</form>
</body>
</html>
(exactly like the example)
And here's Default.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 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();
}
}
(Code was added for the button click event in the class)
There is a red line under lblHelloWorld.Text that error says:
Error 1 The name 'lblHelloWorld' does not exist in the current context C:\Users\Daniel\Documents\Visual Studio 2008\WebSites\WebSite4Ajax\Default.aspx.cs 13 9 C:\...\WebSite4Ajax\
When the page is run, there is a runtime error that says:
Compilation Error
Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.
Compiler Error Message:
ASPNET: Make sure that the class defined in this code file matches the 'inherits' attribute, and that it extends the correct base class (e.g. Page or UserControl).
Source Error:
Line 6: using System.Web.UI.WebControls;
Line 7:
Line 8: public partial class Default : System.Web.UI.Page
Line 9: {
Line 10:
error on line 8.
Thanks kindly for helping with this.
Daniel
Hi Daniel,
In the first line of your markup file, you reference the class "_Default" in the Inherits attribute, but your class is actually called "Default". Change the top line to something like this instead:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="Default" %>
That should at least fix one problem
In the first line of your markup file, you reference the class "_Default" in the Inherits attribute, but your class is actually called "Default". Change the top line to something like this instead:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="Default" %>
That should at least fix one problem
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you can get all ur queries solved @ www.projectsdeal.com
A very good platform to showcase ur project and to get any project. happy tech surfing!
ps: Dont hestitate to call them. i did and it helped me incredibly!
Contact net-tutorials.com