I got 15 tabs and 15 user controls assigned to each tab.All are loading at once which id delaying the process.
I want to load one user control on selection of a tab in tab container.
Part of a web application we have uses an in-house web control assembly. This assembly contains several web user controls where several of these are used by other web controls within the same assembly.
The assembly is built as a website with a web deployment project.
The main web application's pages are dynamically compiled through a service into a single assembly and placed into the appropriate bin folder. In our development server the old assemblies aren't always tidied up and removed, meaning the folder gets full of old assemblies.
When the page that uses the in-house web control assembly (mentioned above) runs, the asp.net instance throws an out of memory as it loads all the old assemblies in an attempt to determine which assembly houses the reference to the user control being used by the other user control inside the same assembly.
We've been using the following inside the top level user controls to register the other controls
<%@ Register Src="~/....ascx" TagPrefix="UC" TagName="...." %>
Of course when the application runs this gives no information as to which assembly it can find it in.
Is there anyone that's come across this problem before? It's not really a problem as our live servers use a clean up tool to remove old assemblies, but there are still potential situations where we could get out of memory caused by this (for example the tool stops working!), so it would be nice to resolve this problem.
Here is the stack trace
[Code]....
I'm doing a menu that loads levels dynamicly, when you click on a item the next level is loaded asynchronously. For each menu item I have a user control. Every user control is declared in its parent, for example, the "secondlevelcontrol" has the reference to "thirdlevelcontrol".With this level of nesting, I want to manage the asynchronous calls on every user control so, when the first level is loaded the javascript to load the second is loaded too. When the second level is loaded the javascript to load the third is loaded too.
To do asynchronous calls I'm implementing ICallbackEventHandler interface. As you can see in the examples, controls are added to the page as plain html. The method "ProcessOnLoadEvent" executes all lines of the "OnLoad" event of the user control.An example of the implementation is this for the user control of fourth level:
public string GetCallbackResult()
{
return _callbackRendering;
}
[code]...
I'm in the process of converting an ASP.Net webform into a User control and there an event that now says
no suitable method found to override
the event code causing the compile error
protected override void OnPreInit(EventArgs e)
{
//do some stuff
base.OnPreInit(e);
}
Is there any equivalent for a user control?
I have written a user control that captures some user input and has a Save button to save it to the DB. I use a repeater to render a number of these controls on the page - imagine a list of multiple choice questions with a Save button by each question.
I am loading the user control inside the repeater's ItemDataBound event like this (code simplified):
[code]....
The problem is that when the Save button is clicked, the page posts back, but lbnUpdate_Click is not called. The Page_Load event of the page itself is called however.
I should mention that the repeater is part of a user control, and that user control is loaded inside another user control (this is a DotNetNuke site which makes heavy use of user controls). The Save button link looks like this:
javascript:__doPostBack('dnn$ctr498$AssignmentsList$rptAssignments$ctl04$ctl00$lbnUpdate','')
I am trying to load a usercontrol with its own model, how does this work in practice? What I want really is to click on a button in a View which opens up a UserControl in the center of the page but there will be no sending my model to it because the model used on the page does not contain what I want it to display in the control (More detailed, the page is a memberpage and the uc is an admin page for approving images sent by other members). I've messed around with Inheritance but not really gotten any good results from that perhaps im doing it wrong). This is how it looks today:
The Model
[Code]....
The Controller
[Code]....
The Link
[Code]....
The UserControl
[Code]....
The Error
What can I do differently to make this thing work properly?
I am hoping someone can help me out. I have a web application that contains a usercontrol think "employment details" a user can enter a previous employment detail.
I have created a page that contains an update panel a placeholder and a button. The button I want to use to load a new copy of the same usercontrol. Can anyone point me in the right redirect?
I have built a "portal" that displays "widgets" (server side usercontrols). The page contains two columns, each containing an updatepanel. Each widget contains an updatepanel and multiview with the default view showing a "loading" message and the second view contains the actual content.
When a user logs in, I query the database to get a list of widgets the user has access to, along with their column and order number. During page init, I add all of the widgets to the page's columns in the order indicated. Once the page loads, a timer on each widget gets fired and the widget's multiview switches from the "loading" view to the content view and sets the content's visibility to true. This forces the content to load.
Setting up the load this way makes the page load appear faster because it doesn't process any of the widget data until after the initial page load. This all works fine but I have an issue with the order in which the widgets get loaded.
Currently, the page loads and the widgets will start loading from the top of the left column down to the bottom, then it will start loading the top of the right column. The page could potentially have many widgets so I end up staring at a bunch of loading messages on the right side while I wait for the full left column to load. I would really like to be able to load top down across both columns instead of the whole left column and then the right column. For example, load the first widget in the left column, then the first in the right, and so on. This way, the user would have something to look at the top instead of staring at a bunch of loading messages and having to scroll down the page while it loads.
I was wondering if anyone can help me work out what the user has selected in this selection changed event?his is what I have so far:
protected void rblNavigation_SelectedIndexChanged(object sender, EventArgs e)
{
string url = (GetCurrentPageName()).ToString() + "?" + Request.ServerVariables["QUERY_STRING"];
[code]...
The problem is that rblNavigation.SelectedValue is not the value that the user has selected to trigger this event. How do I get the value the user has just selected?I'm using C# and this selection event is inside my MasterPage.
i have:
- Default.aspx;
- user1.ascx: 1st user control containing repeater;
- user2.ascx: 2nd user control containing a detail view of row.
In page.aspx i dinamically load the repeater inside a user1.ascx.
after i want to dinamically load the 2nd user control also in default.aspx by a button inside a user1.ascx.
How i can do this? I can't load user2.ascx inside user1.ascx but only in aspx page.
Before I get to the question, let me give a bit of background. I'm trying to develop a custom caching mechanism that I can apply to custom built user controls. (Please be aware that I know that there are some built in caching mechanism in .NET) Depending on certain flags set declaratively in the mark-up the control should load a cached version of its previously rendered content or execute normally (and if certain flags are set it should generate a cache of its content for next time it loads). I would like to be able to pass certain flags declaratively in the mark-up and being able to check their value at Page Init and, depending on the flag value, determine whether the control should load a cached version or not.
<uc:MyUC ID="N1" runat="server"
CacheProp='<%# SomeEnum.A | SomeEnum.B |SomeEnum.C %>'
PropA='<%# this.SomePropA %>'
PropB='<%# (this.SomePropB %>'
PropC='<%# this.SomePropC %>'
/>
The problem that I'm facing is that as far as I'm aware I can only get the value of the properties declaratively assigned in the mark-up if I called the DataBind(). However I'm faced with two problems: Firstly calling this.DataBind() from within MyUC will trigger the binding of all its child controls which would defeat the purpose of the cache; also all user controls have been built so that they will not call DataBind() before the LoadComplete event has fired, so to make sure that the parent controls they live in has done its initialisation and has computed the properties that are declaratively passed to the child user control (ie PropA, PropB, PropC).And now the question: is there a way to bind the CacheProp property so to retrieve its value without data binding all other properties and without triggering the data binding of all its child controls?
I have a user control that contains an image of a product along with some product details.
If the product image is landscape, I want to render the control one way, and if the product image is portrait, I want to render the control a second way.
Example HTML Layouts (drastically simplified):
<div><table><tr><td>
<p><strong>XXXXXX</strong></p>
</td></tr><table></div>
versus
<div><table><tr><td>
<p><em>XXXXXX</em></p>
</td></tr><table></div>
Right now, both layouts are rendered. How can I conditionally render one layout and not the other?
I have a Master Page and in it I have two user controls,User control 'A' and User control 'B'.
so A and B are in the Same MAster page,I have a Button on Aand when ever i click a button I want to Load Usercontrol B(Call its Page_Load) Method...How will i do that?
this is the code but i get an error at line 'C' --- Null Reference Exception was unhandled
[Code]....
I'm trying to set up two check box's in a DataGrid so that only one can be checked at any one time.
At the moment, the following renders the existing state of the choice on screen:
[code]....
How do I go about ensuring that if the user chooses ChoiceOne that any selection of ChoiceTwo will be unselected and vice versa? Is there any way to state in the DataGrid control that these two checkboxes are grouped together?
I am having a very hard time in consuming a very simple web user control that I have built using a Web Application project in VS 2010. The user control works fine as long as the consuming aspx page is in the same project. But after deploying the project using Web Deployment Project into a single assembly I am not able to use it correctly from another aspx page which is in a stand-alone project. The error I see is a null reference exception. Here are the steps that I am following:
1 Create a web user control named WebUserControl_Label using a web application project. This control works fine when used in an webform in the same project.
This is the ASCX of my user control :
<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="WebUserControl_Label.ascx.cs" Inherits="TestWebAppWithCustomControl.WebUserControl_Label" ClassName="TestWebAppWithCustomControl.Controls" %>
<asp:Label ID="Label1" runat="server" ></asp:Label>
This is the code behind:
namespace TestWebAppWithCustomControl
{
public partial class WebUserControl_Label : System.Web.UI.UserControl
{
private string _labelText;
public string LabelText
{
set
{
Label1.Text = value;
}
get
{
return Label1.Text;
}
}
protected void Page_Load(object sender, EventArgs e)
{
}
}
}
2. Create a single assembly for the user control above using a Web Deployment project. The name of the assemby is TestWebAppWithCustomControl.
3. Create a webform in another web application project to use WebUserControl_Label user control. This project has TestWebAppWithCustomControl.dll added as a referemce.
This is how I am using the custom control above in an aspx page:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="ConsumeTestWebAppUserControl._Default" %>
<%@ Register Assembly="TestWebAppWithCustomControl" Namespace="TestWebAppWithCustomControl" TagPrefix="GBS" %>
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<GBS:WebUserControl_Label Id="label1" runat="server" LabelText="This is custom label" />
</div>
</form>
</body>
</html>
The problem is that .NET throws a Null Reference Exception when its trying to set the label text via the LabelText property. It looks like that the label control that lives inside the WebUserControl_Label user control is not getting instantiated and is always null.
I have found a few articles online that talk about creating such distributable user controls using ASP.NET website projects. But if possible I would like to stick with the web application project because of the benefits it brings.
I have a check box list with some items. I want to make it a single selection. A Radio button list won't work because I need it to allow no selection. It may work if it has allows users to deselect the item selected(like in a check box). The second problem would be that instead of simple text I want a text with link.
View 3 Replies<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default.aspx.vb" Inherits="_Default" AspCompat="True" %>
<%@ Register src="Modules/Content.ascx" tagname="Content" tagprefix="uc1" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
[code]...
But still no results unfortunately.
We have an application where the controls are dynamically added to the form based on the logged in user,
This user controls related data is stored in the database. There is lot of logic in the code behind in the asp.net webforms which is so messy to maintain it, we are planning to re-write it using the MVC framework.
I would say there would be rougly 50 different forms based on the user logged in, is it good idea to create so many views and redirect to the appropriate view based on the logged in user, in some of the forms there might be minor difference like the order of the Control might change.
I want to make a single selection in radiobutton in a gridview. I have added "GroupName" in radiobutton attributes but it only works in column which suppose to have a single selection in the entrire gridview. Another problem is getting the value of the radio button. Selected radio button value must appear in a textbox once it was clicked/checked.
View 14 RepliesI want to change the background color of a row when the user selects an item in the ListView. Also, when something is already selected previously, the previously select row reverts back to the default background color. how I can acheive this?
[Code]....
let say i have Two user control U1 and U2. I have a treeview control T1 U1 include a one datalist. U2 include a one datalist. I Place a U1 in a aspx file call home.aspx where i use a placeholder for dynamicly load user control. t1 is a treeview for menu so when i click on a parent item i load u1 in placeholder and when i click a child node in t1 then i can load u2 in place holder. Here u1 content parent data like product category. U2 content child data like product sub category. click t1 parent node load u1 and child node load u2 ok.but if a user click on u1 dataitem it also need to laod u2 and unload u1.
can it be possible? or if anyone can guid me how to use single page with multiple user control response each other event.
Is there a way to instantiate and use a usercontrol (.ascx) if given you have its Type (ie. typeof(MyUserControl))?With regular asp.net controls like a textbox or a dropdownlist you can just make a new instance and add it to a controls collection. This doesnt appear to work for User controls. While you can make a new instance and add it to a collection, and have all of its events fire, it will not actually render to the page. Typically you would call Page.LoadControl() with the path to the .ascxThis presents a problem if all you have is its type. How can you get the path to the .ascx to give to the LoadControl method. Ideally I would also like to not have to have a reference to the Page object
View 1 RepliesI just want to call a user control using AJAX and get the rendered html of the control. However, when I try and fetch the control I get the following error message:
This type of page is not served.
Description: The type of page you have requested is not served because it has been explicitly forbidden. The extension '.ascx' may be incorrect. review the URL below and make sure that it is spelled correctly.
Requested URL: /Controls/ClientFormControl.ascx
Is it possible to make this type of page servable, or is there a specific way you need to call it? I know such things are easy in MVC frameworks...
Im working with Sitefinity and I'm developing a Control Designer - however i dont think my question is specific to SiteFinity.
I have a class such as:
public class CaseStudyFeaturedItem : CaseStudySelectorControlDEsignerBase
The class it is inherriting from is itself inheriting from UserControl, like so:
public class CaseStudySelectorControlDesignerBase : System.Web.UI.UserControl {
Within CaseStudyFeaturedItem is it possible to load a template which is an embedded resource and then access the controls on that control?
So essentially, I have usercontrol.ascx which is an embedded resource so has a string like:
mynamespace.myclass.usercontrol.ascx;
And from within CaseStudyFeaturedItem I want to be able to load that usercontrol and then modify the controls (i.e. literals/labels) that are within it?
I have this GridView that have it's DataSource as a list of previously selected products.
For every item on it, I need to Eval it's ID and load a specifc form that the user must fill, then after that i've got to update the GridView.
I have made those specific forms as User Controls, is this the best approach for this scenario?
If yes, how can I dynamically load them, in a way that I can make queries/postbacks then update back my gridview?