C# - Controlling Load Order Of Dynamic AJAX Usercontrols
Mar 18, 2011
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 have usercontrol (called A) and update panel in it
Following are the control in my updatepanel
1. Â gridview with link button
2. DIV outside the gridview  to load the usercontrol (B) from c#
when i hit the link button of gridview  i am loading my usercontrol(B)  dynamically from code behind and adding it to the  DIV which is working fine. I have button inside the the usercontrol (B) and if i hit the button it doesn't trigger the action.Â
Not sure why it doesn't trigger the click event. i googled and tried enabling ChildrenAsTriggers="true" though it didn't work.
On Template_Click event i am loading the user control from code behind and adding it to the div[divContainer]
I tried to investigate in deeper and found that the update panel causing the issue. If i use the below code[rfered one of your article] on the page load event then it works fine. the button triggers it's action. but when i click the button which is in gridview, it should not post back as it is in update panel, but it postback.
private void RegisterPostBackControl() { foreach (GridViewRow row in gvList.Rows) { LinkButton lnkFull = row.FindControl("Template") as LinkButton; ScriptManager.GetCurrent(this.Page).RegisterPostBackControl(lnkFull);
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?
With my model, I have one view model using another as its base. In my case, BaseUserModel is inherited by CreateUserModel, in order to share common properties such as Username and Password. My CreateUserModel adds to that by having ConfirmPassword, Email, SecurityQuestion, etc.
My problem is, when using the ValidationSummary() Html helper, the validation is obviously in order of the properties in my model. Basically, because of the inheritance I have going on here, the errors are not in the correct order.
Is it possible to control when or how these validation rules are added to the list? The only attribute I'm using is Required.
I am successfully including a javascript resource by calling ScriptManager.RegisterClientScriptResource at the end of OnPreRender in my custom control. However, the resulting script tag is being included before the automatically included script tags that define things like Type and Sys which my script depends on. I thought they were defined in the order that they are included but I can't include my script any later then I am. How can I control the order in which the script tags are included?
As the title says , i'm looking for some kind of technology that allows me to dynamicly add & remove usercontrols.Without a postback ofcourse :)A link would be awesome , example code would be super!
I have the usual problem of dynamically created usercontrols not hitting the event handler for a linkbutton inside the control, but I've checked the usual problems and I can't work out what's wrong. I'm calling a function to create the controls at the bottom of my page.load (although I did try page.init as well just in case) outside of my page.ispostback check, and I'm setting the controls id's to a fixed name which is consistent across postbacks. Any ideas what's wrong?
[Code]....
Usercontrol code:
<asp:LinkButton runat="server" ID="lnkDeleteGroup" Text="Delete this group" />
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?
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
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.
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.
I have dynamic ajax tab container that has several tabpanels.in one of the tabpanel I want to load a JQGrid as user control. but it does not load in my tab panel.
here is my create and load user control in tab panel :
we are creating a custom content management and out portal page is bit bulky it is about 60Kb without images.
and during loading the page in some browser we can see some parts of site load faster than the other parts of the site where as we want to indicate (or instruct the web server) to load some of the areas first then load rest of the page.
is there any particular setting in IIS for is there any particular method in classic asp for doing that? also I have the same question in asp.net.
I am created dynamic Usercontrol in the placeholder, it works fine(top to bottom) but i need to add controls in reverse order mean(bottom to top). I don know how to handle this one. how to display dynamic control in Bottom to top?
is it possible to have a dynamic order in a stored procedure? I have a report that I am generating, I want the report headers to be clickable...so when a user clicks, that column is ordered ASC, and when the user clicks again, it is ordered DESC. I tried something like this, but it won't let me use ASC or DESC...
I am making use of an ASP.NET Masterpage. I have 3 tables as Columns in my Masterpage. The first table load then the second table that contains my "ContentPlaceHolder" and then table 3.How or what must I do to load table 1 and then table 3 and then lastly the table 2 that contains the "ContentPlaceHolder"?
During a recent interview the following question was asked.
- A Master page which contains - An ASPX web form page which contains - A Web User Control inside the page which contains - A button to fire some code in a button_click event
The Init Event will fire (Inner Most to Outer Most)
aspx.page Begin Init -> Inside user control Page_Init -> Inside master page Page_Init -> Inside lifecycle page Page_Init aspx.page End Init
and Load Event will fire
aspx.page Begin Load -> Inside lifecycle page Page_Load -> Inside master page Page_Load -> Inside user control Page_Load aspx.page End Load
Why does ASP.NET framework support different execution order in Load() and Init().This was the question asked in interview.I have no idea about what the interviewer expecting from me.
I have a problem setting focus on a usercontrol in asp.
I have a masterpage with a script manager and a few contentpages. On two of the contentpages I have a usercontrol. Inside this control I have a updatepanel that has another usercontrol that has a asp:textbox, aka TheTextBox. I need those pages to set the focus to TheTextBox.
The innermost usercontrol sets focus in page_prerender: ScriptManager.GetCurrent(Page).SetFocus(TheTextBox);
Now this works on the first pageload, and the second. But not on the third load! And i cant really understad why, but I'm guessing that its because the 2nd postback is renderd inside an updatepanel and somehow that cause the setfocus to not trigger propperly after the 2nd postback.
I have some user controls where I would like to add some javascript that uses Ajax and Jquery technology. Also these scripts should use Sys.WebForms.PageRequestManager.getInstance().add_endRequestand other functions of the Ajax framework.In the past I have added the related code to the hosting aspx page but it becomes a problem when re-using the same control in multiple aspx.
I have the following problem: I have a web form which contains ajax accordion. Each accordion pane contains a usercontrol. Each usercontrol consists of several textboxes and 2 buttons. All the textboxes and 2 buttons (inside these usercontrols) are wrapped in the UpdatePanel. Following updatepanels is the UpdatePanelAnimationExtender for some animation whithin each usercontrol. Each UpdatePanelAnimationExtender has a different animation id from other usercontrols.
Basically when i only put one usercontrol in the accordion pane everythign works. I have my javascript to clear textboxes and the submit button does a postback to server. However, when i put 2 of these controls in 2 different panes only the last one works. Since the last one works i assume it is because it was last to be parsed on pageLoad. So how can i make it that when user clicks on the accordion pane, the usercontrol is ->?re-initialized?<- so that it could work.
Here is 1st UserControl: uctl1.ascx
[Code]....
Here is 2nd UserControl: uctl2.ascx
[Code]....
when i click on pane and fill up the information in textboxes i click on submit and usercontrol should postback to server for processing.
I m getting Problem in Tab Index Setting of Dynamic Created Controls. There are 6 Drop down dynamic created and also Two user controls which contains text boxes. There are also Static Controls on a Page. How i set tab index for all controls. I have try to give from code behind using TabIndex property But it's not working and Tab order get destory.
I have a FormView with an EditTemplate.And the EditTemplate contains an ascx control:
<asp:FormView ID="fvTicketUpdate" runat="server"
[code]...
The contents of the ascx control has TextBox and DropDownList controls binding to the results of the FormView's ObjectDataSource through Text='<%# Eval("field1") %>'and SelectedValue='<%# Eval("field2") %>'.This works fine and I have been building all of my front end pieces like this as <asp:Panels> rendering as FieldSets that go 100% across the screen.And we call these areas "strips" accross the screen.But now I've run into a problem.One TextBox and one DropDown bind fine to a Ticket Object.But the DropDownList that works has its <asp:ListItems> hardcoded before hand.Now I have DropDownList that gets populated through a WebService in the ascx's code behind like this:
public partial class UserControls_FormControls_PntipUpdtFaaInfo : System.Web.UI.UserControl { protected void Page_Load(object sender, EventArgs e) { if (!Page.IsPostBack)
[code]...
The Problem I think is the FormView is trying to do its Bind to the objectDataSource before its child ascx control is loaded in the Edit Template.And I am getting this error:
Databinding methods such as Eval(),XPath(),and Bind() can only be used in the context of a databound control.Meaning that the control must already be databound to bind the selectedValue to a Property of the TicketObject.Is there an easy way to force the order of loading to make the PntipUpdtFaaInfo control load and have its Page_Load execute and bind ddlEquip before the FormView does its first dataBind and executing its Evals?Otherwise I have to take out the eval on the ddlEquip SelectedValue attribute and go to the Parent Page and hack and force everything to happen when it needs to.This layout has worked out well for me.All of the ascx area strips across the screen share the same Validation Summary for example.It allows me to think about one section at a time and the Properties to the Business Obect and CRUD methods as I go.But this is a big brick wall I've hit.
I have 5 hard corded texboxes in a page in a sequence with sequence Number . Now i want to add re-order /re-arraning functionaly .. but i can't use ajax reorder list because i have 5 hard corded texbox. how can i maintain the order in Insert/Update cases. And also suggest me control that i can use, another than ajax re-order list. coz i not using any list items i have hard corded items on the page.
The AjaxToolkit has a ReorderList. I'm searching for a jQuery solution that does the same and found this page. I would like to change the order of divs (vertically) and upload the new order to the database (ajax).
