Is it possible to do something like this in regular ASP.NET (or something similar):
<ul>
<% foreach (var item in Model) { %>
<li id="<%: item.Id %>">
blah blah
</li>
<% } %>
</ul>
I need to do a gird, but I want to control how the html table is output.
I am trying to match an email, however when put the same expression in the code behind, vs the aspx, I seem to be getting different matches for email address. The aspx regex validator seems to be working correctly, however I need to validate for my webservice as well.
Regex regExEmail = new Regex(@"w+([-+.]w+)*@w+([-.]w+)*.w+([-.]w+)*");
if (!regExEmail.IsMatch(contact.emailAddress))
{
//do something
}
I need to create a code that reads the QueryString and set a value on the Session and on the end of the page I need to clear the Session.
How can I make a code like this to run on all .aspx pages?
I'm just starting out learning ASP.NET. From what I understand, ASP.NET differs from old school ASP in that the logic code for a page exists in as separate file rather then being embedded in the ASP page. So when a user requests a page like ShoppingCart.aspx the server reads the directive at the top ...
<%@ Page Title="" Language="C#" MasterPageFile="~/Styles/Site.Master" AutoEventWireup="true"
CodeBehind="MyShoppingCart.aspx.cs" Inherits="TailspinSpyWorks.MyShoppingCart" %>
This tells the server what file and what class in the file is associated with the page. The code behind class also has member variables that correspond to each control on the page, and provide a way for code in the code behind file to manipulate the controls.
First, do I understand this correctly?
Second, could a site be setup with two separate ASPX pages with identically named controls, which both had a directive pointing to the same file and class? Would you even want to do this? Both pages could have the same functionality but a different layout. I was thinking this could be a way to create separate "desktop" and "mobile" versions of a page with out duplicating content in the code behind files.
I guess ultimately what I'm wondering, is if there a way to define an abstract page? Say create an abstract page definition that says a page must have controls "cart_list", "total_lbl", but then be able to have multiple pages that inherit from this abstract page?
Is there a way to check for errors in unopened *.ASPX pages. For example, if you change the name of a function Visual Studio will catch the error on the page and list it in the "Error List" only if the page is opened and being validated?
How do i find out about the following without running the page through the webserver or opening the page to be validated in VS?
<script runat="server">
Public Sub MyFunciton()
Undefined_FUNCTION()
End Sub
</script>
I need to display c#, vb.net or any source code on a web page. The source code that will be displayed should indented, colored as we see in any IDE. I am not sure how would i achieve this. Is there any in-built control available in asp.net that i can use to display the code or can someone tell me how can i achieve this.
View 3 Replies[Code]....
Source File: c:UsersfrankDocumentshealingHeartsWShhhhMaster.cs Line: 3 Show Detailed Compiler Output
I'm trying to add Google Adword conversion code script to certain aspx pages in our website but I'm running into an issue with the site using master pages. The Google instruction said to place the code before the body tag but with master pages being used the code will be on all the pages using the master page. I would like setup it up where certain pages use individual conversion codes with others not using anything. Any suggestions or examples would be appreciated. Also, I'm using C#.
View 1 Replieswhere we use <%@ %> <%= %> <%# %> etc.
what else asp tags can be added in asp.net web pages?
I am writing a dynamic control that I want to pass in something along the lines of the following:
HyperLink myLink = new HyperLink();
myLink.NavigateUrl = "/Home.aspx?id=<%= DataBinder.Eval("PageId") %>";
myLink.Text = "The link";
myControl.Controls.Add(myLink);
I want to be able to resolve the myLink.NavigateUrl at run-time according to the context that myControl puts the control into in the end (this is not a WebControl and therefore adding to the collection of controls doesn't output to page).
I'm updating my old .aspx views with the new Razore view engine. I have a bunch of places where I have code like this:
<span class="vote-up<%= puzzle.UserVote == VoteType.Up ? "-selected" : "" %>">Vote Up</span>
Ideally I'd like to do this:
<span class="vote-up@{puzzle.UserVote == VoteType.Up ? "-selected" : ""}">Vote Up</span>
However there's two problems here:
vote-up@{puzzle.UserVote .... is not treating the @ symbol as a start of a code block @puzzle.UserVote == VoteType.Up looks at the first part @puzzle.UserVote as if it's supposed to render the value of the variable.
I'm building an asp.net app using themes, and I've assigned a theme to the app using the web config.
I have a bookmark icon that I want to use for my page and it is located in the themes directory, but I am having trouble referencing the themes location from a link tag in my header.
First I tried putting a code block inside the link tags href element, which did not work. Instead all it did was html encode the <% characters and output it directly to the browser:
<link rel="shortcut icon" href="/App_Themes/<%=Page.Theme %>/images/bookmark.ico" type="image/x-icon" runat="server"/>
I am able to put a code block inside an element in an hr tag though, so I don't know why it won't work in a link tag:
<hr test="<%=Page.Theme %>"/>
Then I tried doing a Response.Write inside the head tag, but I got an error saying the Controls collection cannot be modified because the control contains code blocks:
<% Response.Write("<link rel="shortcut icon" href="/App_Themes/" + Page.Theme + "/images/bookmark.ico" type="image/x-icon"/>"); %>
I also tried it just with a string literal, and got the same error:
<%= "<link rel="shortcut icon" href="/App_Themes/" + Page.StyleSheetTheme + "/images/bookmark.ico" type="image/x-icon"/>" %>
Is there any way to reference something from the themes directory inside the link tag?
I'm trying to do this in both an ASP.NET 2 and an ASP.NET 2 MVC app.
i saw few of solutions for this exception (like putting it in place holder, or replace the <% to <# ...etc) , but i don't get the idea about it, i mean what is the controls collection? and why it can't be modified if the added control contains code blocks?
View 2 RepliesI recently put some code <% %> code blocks in my Master Page. Note I've read of the "fix" for either moving things out of <head> or using <%# %> but neither of them work well for my application.
Now the weird thing is that I only get this error on one page of mine. All the other pages seem to work fine, so what actually causes this error? There is nothing I can think of that is unique about this page. It uses the script manager as does other working pages and there is just nothing extraordinary about this page. It does have quite a few custom controls on it, so hunting down what is different in this page is more difficult than usual.
So what actually causes the Controls collection cannot be modified because the control contains code blocks exception?
Error: The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>)
I have the following in my master file to load a dynamic seasonal background image:
HTML Code:
<style type="text/css">
body
{
background-image:url("<%=backgroundImage%>");
background-position: top center;
}
</style>
It works fine on most of my pages, but on one it throws the above error.
We are using Infragistics' WebDataGrid, but this question probably applies to all other grids. I am new to Infragistics (actually have worked with their controls years ago, but feeling new regardless!) and this application as well. So I'm looking to its existing code as a model.
I want to have a column called Tobacco with a Y or N value depending on if Smoker is true/false.
Ideally, the whole thing would be something like this:
Code:
<ig:BoundDataField Header-Text="TobaccoUse" Key="Smoker">
<ItemTemplate>
<%# DataBinder.Eval(Container, "DataItem.Smoker") != DBNull.Value ? (DataBinder.Eval(Container, "DataItem.Smoker") == true ? "Y" : "N") : "N"%>
</ItemTemplate>
Because I want to check for a null first and when I know I don't have one, test the value.
But since I am getting an error on that I am trying to start simple and build it up. I am getting the same error on this:
Code:
<ig:BoundDataField Header-Text="TobaccoUse" Key="Smoker">
<ItemTemplate>
<%# DataBinder.Eval(Container, "DataItem.Smoker") == true ? "Y" : "N"%>
</ItemTemplate>
The error is: Code blocks are not supported in this context.
Why is this a code block and should it be something else? What is my context?
This is an example of a line that works:
Code:
<ig:TemplateDataField Header-Text="DOB" Key="DOB">
<ItemTemplate>
<%# DataBinder.Eval(Container, "DataItem.DOB") != DBNull.Value ? Convert.ToDateTime(DataBinder.Eval(Container, "DataItem.DOB")).ToShortDateString() : ""%>
</ItemTemplate>
</ig:TemplateDataField>
I don't know if I need a Convert.ToBoolean in there somewhere but I tried and it didn't work and at this point I am just guessing which will take a long time for me to get it right.
I have web.confing file when adding tag page for set theme
After running project i have this error:
The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>).
<pages theme="Theme" styleSheetTheme="Theme" clientIDMode="AutoID" />
I am getting http exception in of the method of class file (search.aspx.vb) like "The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>)",
I have tried placing Java script function in the body of Master page from header, whereas I just removed the Java script tag and its contents in search.aspx (as of its not required now). Still getting exception.
I also know that if we have something like this <%= in Java script function we need to replace with <%#. But I don’t have this kind of code in any function.
I want use meta tag in my page that read keyword from database
I set this code in my product.aspx page
protected void Page_Load(object sender, EventArgs e) {
SqlCommand _cmd = new SqlCommand("select Keyword1 + ',' + Keyword2 + ',' +Keyword3 from House_info where BehCode=1115", _cn);
_cn.Open();
SqlDataReader _dr = _cmd.ExecuteReader();
while (_dr.Read())
[Code] ....
It worked correctly and show my keywords from database and show it in my product.aspx metatag
I have two other page
index.aspx and store.aspx in index.aspx i have 1button and 1 TextBox when user type their BEHCODE(columns name in users table) in TextBox it go to store.aspx page and show that users information on store.aspx
Now i want set meta tag in store.aspx page and i want fill store.aspx meta tag from my users table in data base
This is index.aspx
protected void ImageButton3_Click(object sender, ImageClickEventArgs e) {
string data = Server.UrlEncode(txtNumeric.Text);
SqlCommand _cmd = new SqlCommand("traidname", _cn);
_cmd.CommandType = CommandType.StoredProcedure;
_cmd.Parameters.Add("@BehCode", data);
[Code] ....
Here when i run website this error occur
The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>).
In this line
this.Page.Header.Controls.Add(htmlMeta);
I use this code too
<script type="text/javascript">
$("input[id$=btnButton]").live("click", function () {
return confirm("Do you want to submit?");
});
</script>
But it didn't worked this problem just happen here when i used meta tag code in other page it worked correctly . Why this happen?
The code on one of my aspx pages is giving me this error:
I'm getting this on the code behind for export to excel on one of my pages.
The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>).It is referring to this line Me.GridView1.Parent.Controls.Add(frm)
I have this code in the aspx page. I am using two gridviews. I need to have this on the page any way I can fix the code so I can use that export to excel you created?
<% If(Session("PendingClaims"))%>then display gridview1<%Else%>
Then display gridview2<% End If %>
I was working on an asp.net 3.5 website and used ajaxtoolkit in it and when I use it in my page it was registered as below
<%@ Register assembly="AjaxControlToolkit" namespace="AjaxControlToolkit" tagprefix="cc1" %>
and it was working well even After I upgraded my wevbsite to .net version 4 but when I started a new website from scratch in vs2010 using .net4 when I use ajax toolkit in this new site it is registered as folowing
<%@ Register assembly="AjaxControlToolkit" namespace="AjaxControlToolkit" tagprefix="asp" %>
and when I run the page I get the error The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>) I don't Know what is the reason for this. I noticed another thing. in my old website I was using thckbox script by using the files common.js, jquery-1.3.2.js,jquery.thickbox.js and puting them in a Javascript folder ad then registering them in Script manager as following
<asp:ScriptManager ID="ScriptManager1" runat="server">
<Scripts>
<asp:ScriptReference Path="~/Javascript/jquery-1.3.2.js" />
<asp:ScriptReference Path="~/Javascript/jquery.thickbox.js" />
<asp:ScriptReference Path="~/Javascript/common.js" />
</Scripts>
</asp:ScriptManager>
this was working well also but in my new site the jquery file version was jquery-1.4.1.js but also I added the old version f the javascripts files in the built in Scripts folder that is created by default b the new site and followed the same way in registering them in the script managerchange the JavaScript folder to the built in folder Scripts
<asp:ScriptManager ID="ScriptManager1" runat="server">
<Scripts>
<asp:ScriptReference Path="~/Scripts/jquery-1.3.2.js" />
<asp:ScriptReference Path="~/Scripts/jquery.thickbox.js" />
<asp:ScriptReference Path="~/Scripts/common.js" />
</Scripts>
</asp:ScriptManager>
but this doesn't work also in the new site I think that there is something diffirent in the 2 case which leads to this change in performance I wish your support and advice about how to solve this matter
This is a great idea, but it's implemented for sharepoint .Wonder if there is a solution for regular asp.net pages, which does the same, caches viewstates.
View 1 RepliesI wrote a test page that does a bunch of busy work in a method called at page load. This process as I have it now takes around 12 seconds.
If I try to load another page while the first long running page is loading, this second page doing nothing except writing out a world, it doesn't load until the first long running page is finished.
Why is this the case? I would think IIS would be able to handle multiple concurrent connections, it seems crazy that one long running page would stop every other page in the application from loading. I must be missing something or not understand how IIS works.
I would think multiple independent requests would be spawned on different threads. Is this only the case if the requests are from different sessions entirely? Are all requests from a single session bound to a single thread?
I have a multiline (> 50 lines) textbox containing plain text. I want to add either a session variable to the text in this box. In asp I would have done it by putting in <% %> code blocks but in .net I am getting the following error: "Code blocks are not supported in this context". I assume therefore that this would need doing in code behind.
Is there a quicker way than putting all the text from the textbox in a string in code-behind and then adding the variable on like this? I would like to keep the text in my aspx page if possible.
I'm receiving this error on a page that previously worked fine, in fact the only change I've made to the page recently was to add another asp:TextBox and asp:RequiredFieldValidator control.
The page already had numerous ASP.NET controls on it, so I cannot see why these extra controls would make a difference, anyway I shall post the code below and hopefully you can see what the error is:
<%@ Control Language="C#" AutoEventWireup="true" CodeFile="MeetingGenerator.ascx.cs"
Inherits="usercontrols_MeetingGenerator" %>[code]......