In VB during page_load I'm trying to initialize:
<body id="Body" class=<%=currentPage%> runat="server" >
...but unsuccessful. I keep getting an "unhandled exception" before the page is displayed. How do I properly do this before the <body> element is accessed?
I am trying to get a dropdownlist to fill a webform.My approach is to have the dropdownlist to be bound with data from the database. OnSelectedIndexChange for the dropdownlist, I would like to query the database to get the form data. Once the form is filled, changes can be made, then saved again...writing changes back to the database.These seems very simple, but I am stuck. My dropdownlist posts to the server to get the data, but I think this is submitting my form...which cannot have some empty form fields.
What I am looking for is a new way to approach this task ( I have gotten tunnel vision ).
Initially before page load I declared list string variable
List<string> Emails = new List<string>();
Then I am adding value in for each as
Emails.Add(Convert.ToString(item["E-mail Address"]));
I checked value are ading properly. Then on btn_click event I am retrieving value as
foreach (string emailid in Emails
{
Response.Write(emailid .ToString());
}
Nothing is displaying, it seems on form submit list string is initializing.
I have 2 Imagebuttons on a nested Masterpage. When I click one button I want load a content page and change the image of the clicked button to show that it was selected. Loading the content page goes okay but I can't seem to programmically change the image of the button. I have been reading the posts on the life cycles of MasterPages and Content pages and I think I have the code in the correct page but it is not working. I am so confused now.
View 2 RepliesIs there a way to retrieve values from the form object using the id element instead of the name element?
View 3 RepliesI need to Initialize a value in a Javascript by using a c# literal that makes reference to a Session Variable. I am using the following code
<script type="text/javascript" language="javascript" >
var myIndex = <%= !((Session["myIndex"]).Equals(null)||(Session["myIndex"]).Equals("")) ? Session["backgroundIndex"] : "1" %>;
However the code above is giving me a classic Object reference not set to an instance of an object. error. Why? Shouldn't (Session["myIndex"]).Equals(null) capture this particular error?
I have model where exist code for init items for MultiSelectList.This MultiSelectList contain a lot of items and this items reading from external services or database this is doesn't matter. Lets imagine that this reading is slow in any case.
[Code]....
But In Controller when user made Post Back and I also reload this items because InvoiceViewModel not contain items in collection what bind to MultiSelectList he contain only selected items.I have idea save this list in global object.How and where I can store global object in MVC ?
public class Template
public string Title {get;set;}
public string Body {get;set;}
xml that is stored in /files/test.xml in a web application (at the root):
[code]...
I have a C#/ASP.NET .aspx page that declares two controls that each represents the content of one tab. I want a query string argument (e.g., ?tab=1) to determine which of the two controls is activated. My problem is, they both go through the initialization events and populate their child controls, wasting CPU resources and slowing the response time. Is it possible to deactivate them somehow so they don't go through any initialization?
My .aspx page looks like this:
<% if (TabId == 0)
{ %>
<my:usercontroltabone id="ctrl1" runat="server" />
<% }
else if (TabId == 1)
{ %>
<my:usercontroltabtwo id="ctrl2" runat="server" />
<% } %>
I assumed the that <%'s would have meant the control wouldn't actually be declared and so wouldn't initialize, but that isn't so...
The First - LblTextBox:
A label and textbox that have a LabelText field that can be set to change the label text
The Second - LoginCtl:
A login control that has two instances of LblTextBox for user name, password and a submit button
I want to control the tag rendering of these controls for formatting so I am not overriding CreateChildControls() to get the job done.
My issue is that the controls are rendered but none of the OnInit() code in either controls takes hold (blank labels, css styles not applied, etc..).
[Code]....
Problem Description: A person has to enter all his details and take a photo(While Taking his Snap in our website there will be a Image Component and we have to Initilize the Client System(Any Company Webcam)Webcam and below Image Component there will be a button(Take Snap) When he clicks on it , it should take his snap store it. After He fills all his details when he clicks on Save button, all the details along with that image should be Uploaded to the server.
1) How to Check Whether the Client has Installed any Webcam or Not First.
2) If the Client has Installed any Webcam then Initialize that Webcam When he clicks on Take Picture.
3) Stream that Video that is coming from that Webcam Inside our Image Control in Website.
4) After He Clicks on Save Image button that streaming should stop and still image should be saved.
5) Accessing that Image(Later Converting it to Byte Stream) and uploading Image along with his data to Sql Server.
I got this errors while trying to use an example from the ASP.NET 3.5 Unleashed book.
Webform1.aspx
[Code]....
LengthValidator.cs
[Code]....
As from the book's note, I think I added this line correctly:
[Code]....
However, the compiler kept complaining that:
Warning 1 Element 'LengthValidator' is not a known element. This can occur if there is a compilation error in the Web site, or the web.config file is missing. C:Visual Studio 2010 ASP.NET ProjectsWebApplicationFourWebApplicationFourWebForm1.aspx 16 17 WebApplicationFour
Element 'ScriptManager' is not a known element. This can occur if there is a compilation error in the Web site.
Element 'UpdatePanel' is not a known element. This can occur if there is a compilation error in the Web site.
tried many thingschecked web config filereinstalled ajaxtoolkit
but nothing is working
getting error in the whole projectalong with this getting error for other asp,net controls also
Element 'TextBox' is not a known element. This can occur if there is a compilation error in the Web site.
I'm looking at an asp.net application, i notice that there are assemblies defined into two places. In web.config there is configuration/system.web/compilation/assemblies/add elements. In the project file there are references setup under the Project/ItemGroup/Reference elements.
I was wondering, what is the difference between assemblies/references added in either location?
I have a table in ASP.Net like this.
[code]....
I want to give border line to first td element which contains the colspan and rowspan. Not to the entire row.
I have noticed that when I create a website in a network drive and use the Ajax toolkit I get :
Element 'ToolkitScriptManager' is not a known element
I also noticed that after adding the ToolkitScriptManager it doesn't add the ID in the source code, it looks like this:
<asp:ToolkitScriptManager runat="server"></asp:ToolkisScriptManager>
Is missing the ID="ToolkitScriptManager1" part.
This doesn't happen when I create the site in my local drive. Is there a workaround to this. Even if I add the missing parts, I keep getting the same error.
I would like to select an element that is in the same TR as another element I found with a selector. The selector itself: $("input[name='sMessageValue']","#messageTable") Now I have this element and got its value I would like to find a checkbox located in the same TR, i tried this as starting point : $(this).(':parent').val(). But seems not the right thing to do.
View 9 RepliesYou're making a website with ASP.NET 4.0/C#, although xml alone is suitable for this example. The site will have a site map and a default page with a menu control, as follows:Web.sitemap
<?xml version="1.0" encoding="utf-8" ?>
<siteMap xmlns="http://schemas.microsoft.com/AspNet/SiteMap-File-1.0" >
<siteMapNode url="~/default.aspx" title="Home" description="">
<siteMapNode url="~/1.aspx" title="Link 1" description="" />
<siteMapNode url="~/2.aspx" title="Link 2" description="" />
<siteMapNode url="~/3.aspx" title="Link 3" description="" />
[code]...
Element 'content' is not a known element. this can occur if there is a compilation error in the website, or the web.config file is missing.
<asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<asp:Content --- showed a green wavy line , and on hover displayed the above error.
Now I am having certain problems.
1. Visual Studio 2010 hangs when I try to use ToolBox.
2. Intellisense for asp.net controls is not working.
I have tried replacing web.config file (frm backup) , tried to debug - it doesnt show anything.
All other websites are working alright. Have problem with only one of the websites.
I upgraded from VS 2008 to VS 2010 and now the AJAX elements are not recognised by the source code editor, e.g. UpdatePanel, ScriptManager, etc. I get warnings in VS and no intellisense for those elements. When I run the site, all the AJAX controls work OK though.
View 6 RepliesI am using dotnetCHARTING: the dll is installed in the GAC and referenced in my web.config (all versions appear to match). The project has a reference to the dll.
web.config:
<add assembly="dotnetCHARTING, Version=5.3.3540.17054, Culture=neutral, PublicKeyToken=af2cd47db69d93bd"/>
The site code compiles ok, but all aspx pages using the charting library complain that the Chart tag does not exist (warning that it might be a compile error). The aspx pages do not render the charts.
Each page has a reference to the assembly:
<%@ Register Assembly="dotnetCHARTING" Namespace="dotnetCHARTING" TagPrefix="dotnetCHARTING" %>
What does that means below warning:
Element 'AsyncPostBackTrigger' is not a known element. This can occur if there is a compilation error in the Web site, or the web.config file is missing.
My app is working properly but visual studio showing warning like that.
can i take div element within the td element of the table. bcoz when i taking, it's not showing in the design mode of asp.net VWD?
syntax is
[code]....
So I have a file called WebParts.aspx which looks like this -
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebParts.aspx.cs" Inherits="e.WebParts" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp" %>
<!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">.........
I converted a forms website into an application and everything has been working just fine until now. I keep getting the green squiggly lines and the error that Element 'X' is not a known element. This is on almost every element, Gridview, Label, Update Panel, Hyperlink Field, Bound Field, etc...
my web.config contains
<pages theme="basic">
<controls>
<add tagPrefix="ajax" assembly="AjaxControlToolkit" namespace="AjaxControlToolkit"/>
<add tagPrefix="asp" namespace="System.Web.UI" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
<add tagPrefix="asp" namespace="System.Web.UI.WebControls" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
</controls>
</pages>
so ajax and asp are viable prefixes. The very odd thing is that it is only happening on a few user controls, all other user controls are fine and the errors never show up. I have tried rebooting and everything and nothing seems to fix it. All masterpages, web paages, and about 90% of the user controls are fine, its only on a few user controls and super annoying!