I have this c# code
namespace ZumaApp
{
public partial class _Default : System.Web.UI.Page
{
ServiceReference1.QSLWebBookingSoapClient services;
public String CallerId = "";
public Int32 rowCount;
protected void Page_Load(object sender, EventArgs e)
{
CallerId = Request["CallerID"];
and in my asp I have this:
<%# Page Title="VMP Online Booking" Language="C#" MasterPageFile="~/Site.master"
AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="ZumaApp._Default" %>
My problem
The page load function is not executing.
how did I know that
First: I make a break point on the first line in the Page_Load function, but visual studio doesn't stop at the break point.
second: I make a break point at this line public String CallerId = ""; and Visual studio stops on that line, then I press step over but the page loaded without going to the Page_Load function.
I tried clean and rebuild but dones't help
try this
<%# Page Title="VMP Online Booking" Language="C#" MasterPageFile="~/Site.master"
AutoEventWireup="true" CodeBehind="_Default.aspx.cs" Inherits="ZumaApp._Default" %>
Try delete the .Designer.cs and recreate it by Convert to web application option.
It can be regenerated by right clicking on the aspx / ascx file and select Convert to web application option.
Some times .Designer.cs wont be refreshed by VS, and need to apply this method to get a fresh .Designer.cs file.
In the InitializeComponent function (which resides in the "Web Form Designer
generated code" region), you should have a line which says:
this.Load += new System.EventHandler(this.Page_Load);
This line of code should be automatically generated, and tells the framework
to execute the Page_Load function when the page loads. If this line is
missing, the Page_Load function won't fire. Adding this line should solve
your problem.
Reference: Page_Load Not Firing?
Related
I have been trying to link a a web form to be a able to access a variable in the master page. I did this before it worked. But now when I do it I get an error.
The code in Site.Master
<%# Master Language="C#" AutoEventWireup="true" CodeFile="Site.master.cs" Inherits="Site" %>
The code in Site.Master.cs
public partial class Site : System.Web.UI.MasterPage
{
public string hi = "";
protected void Page_Load(object sender, EventArgs e)
{
}
}
The code in WebForm1.aspx:
<%# Page Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" CodeFile="WebForm1.aspx.cs" Inherits="WebForm1" %>
<%# MasterType VirtualPath="~/Site.master" %>
The Code in WebForm1.aspx.cs
public partial class WebForm1 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
Master.hi="new"
}
}
When I hover over the hi, I get this message
Error in Visual Studio - "You can use navigation bar to switch contexts
Here is another image
Screenshot
If you guys could help me it will really be great
I had this same problem in an MVC application so the WebForm-CodeFile-CodeBehind suggestion didn't really apply.
However, I realized the new classes that I created had their "Build Action" set to "Content". Once I changed this to "Compile", everything started working again.
In your WebForm1.aspx, try changing CodeFile to CodeBehind. That's what worked for me.
Try adding manual the ID of the form into the designer "yourname".aspx.designer.cs, in your case I guess it should be WebForm1.aspx.designer.cs.
You'll see a reference line for every id you have. You need to add a line like this -> "protected global::System.Web.UI.HtmlControls.HtmlForm hi" if you added the form like normal html
or -> "protected global::System.Web.UI.FormView hi" if you added as an aspx element
I have made an ASP.NET application using Notepad++. For this exercise I do not want to use Visual Studio, or any other tool. I want to understand the process.
I have created my website, and it is up and running fine, and all working well.
Now I want to add some C# code behind the pages, both for the master page and for individual pages.
So far, I have a file called Home.aspx, and I want to add a C# file to this.
I have created a file called Home.aspx.cs. Below is the full content of the file:
protected void Page_Load(object sender, EventArgs e)
{
Response.Write("LOAD");
Response.End();
}
But when the page loads, this file is not loading. Obviously I am missing something, but I am not sure what. Possibly a reference in my web.config or some other folder, or language reference to tell the page this is C#, or something to tell Page_Load to actually run?
Also, I want to do the same thing for my master page, which is currently called masterPage.master.
So would I make a file called masterPage.master.cs, or is it a totally different way, or can this even be done?
All references to this problem explain how to do this in Visual Studio, which I do not want to use.
You can in fact create an ASP.NET WebForms page without compiling .cs files explicitly.
Home.aspx
<%# Page Src="Home.aspx.cs" Inherits="HomePage" AutoEventWireup="True" %>
Notice that the # Page directive uses the Src attribute instead of the usual CodeBehind attribute.
(Instead of Src, you can alternatively use the CodeFile attribute and mark the code-behind class below partial.)
Home.aspx.cs
using System;
using System.Web.UI;
public class HomePage : Page
{
protected void Page_Load(object sender, EventArgs e)
{
Response.Write("LOAD");
Response.End();
}
}
masterPage.master
<%# Master Src="masterPage.master.cs" Inherits="MasterPage" AutoEventWireup="True" %>
Same thing, except that you use the # Master directive instead of # Page.
(Again, instead of Src, you can alternatively use the CodeFile attribute and mark the code-behind class below partial.)
masterPage.master.cs
public class MasterPage : System.Web.UI.MasterPage
{
}
(I named the code-behind class MasterPage to match your file name, but to avoid confusion with the built-in ASP.NET MasterPage base class, you may want to choose a different name.)
By adding a CodeFile link to the page as follows:
<%# Page Language="C#" MasterPageFile="~/MasterPage/MasterPage.master" CodeFile="Home.aspx.cs" Inherits="Home" Title="Content Page"%>
and ensuring an inhereits tag is present, it is not necessary to compile the code.
So this is the correct answer
The .aspx, .js and .html files in your asp.net app does not need any compilation, but C# is compiled language, so every .cs file needs to be compiled.
You can use some compiler for that purpose or VS command prompt.
Look at the links as well:
https://msdn.microsoft.com/en-us/library/ms229859%28v=vs.110%29.aspx
https://msdn.microsoft.com/en-us/library/78f4aasd.aspx
https://kencenerelli.wordpress.com/2014/03/08/using-notepad-to-write-c-code/
It needs to be compiled in order to run.
It's possible to call msbuild.exe on your solution from the command line.
https://msdn.microsoft.com/en-us/library/ms164311.aspx
I am trying to dynamically create a user controls in Visual Studio 2012/ASP.Net/C# but my project does not recognise the type name of my user control when I try to use it in the code behind of any other aspx or ascx page. I've tried rebuilding it and also removing namespaces and it seems like it should just work but it doesn't!
The top line of my ascx file is this:
<%# Control Language="C#" AutoEventWireup="true" CodeFile="WebUserControl.ascx.cs" Inherits="AG_Controls_WebUserControl" %>
The corresponding codebehind looks like this:
public partial class AG_Controls_WebUserControl : System.Web.UI.UserControl
{
protected void Page_Load(object sender, EventArgs e)
{
}
}
I try to declare in instance of it in the code behind of a blank aspx page like this:
AG_Controls_WebUserControl test = new AG_Controls_WebUserControl();
And I just get :
Error 3 The type or namespace name 'AG_Controls_WebUserControl' could
not be found (are you missing a using directive or an assembly
reference?)
It's been a long day and I am pretty tired but this shouldn't be rocket science, but I can't see what the problem is. Help much appreciated!
You forgot to include the reference to the control in the ASPX page. You still need to include that reference if you are dynamically creating the control in the code behind.
<%# Register src="WebUserControl.ascx" tagname="WebUserControl" tagprefix="uc1" %>
I have created a VS 2013 project using built-in asp.net Web Application Web Forms template. By putting a breakpoint in the Page_Load method of a page I can see the method is executed twice between pressing F5 and the page appearing. Why? And can I / should I stop this behaviour?
Apologies for not providing enough detail. The code is completely vanilla, untouched template code generated by VS Exp 2013 for Web.
The ASPX file is
<%# Page Title="About" Language="C#" MasterPageFile="~/Site.Master" AutoEventWireup="true" CodeBehind="About.aspx.cs" Inherits="mycompanyname.B1WebApp.About" %>
The ~/Site.Master has an empty Page_Load method (not sure this is relevant)
The code behind is
public partial class About : Page
{
protected void Page_Load(object sender, EventArgs e)
{
Boolean Nothing;
}
}
You can avoid pageload function working on each postbacks by !IsPostBack
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
//Your code here
}
}
A User control with this master page can also cause pageload execute twice...
This is part asp.net web forms, as a page posts back to itself whenever a server control is used on a page. It has been like this forever.
You need to do a check on page load:
if(!IsPostBack)
{
//Code for first time load
}
else
{
// code whenever you have a postback
}
as it says, when I run my application in debug the code-behind isn't being called.
I had this problem to start with and managed to get around it by abandoning the page I was working on and starting a completely new one.
However it seems this one has now broken also!
Basically it just opens showing the unaltered HTML without running any of the C# code and without hitting any breakpoints.
It builds ok but I haven't tried deploying it yet as I don't have a server available at the moment.
This is my code behind from index.aspx.cs:
namespace PAPS
{
public partial class index : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
string username = User.Identity.Name;
// check security
Security security = new Security(username);
divUsername.InnerText = username;
security = null;
}
}
}
The page declaration from index.aspx is as follows:
<%# Page Language="C#" AutoEventWireup="false" EnableSessionState="True" EnableViewState="false" CodeBehind="index.aspx.cs" Inherits="PAPS.index" %>
Anyone have any useful suggestions?
Thanks
You have
AutoEventWireup = false
Unless you're handling the events yourself, try setting that to true.