How To Get The Id Of Updatepanel Which Initiated A Postback
May 25, 2010
I need to intercept server callback after udate panel async post back and determine which panel initiated the request. The code is pretty simple:
Sys.WebForms.PageRequestManager.getInstance().add_pageLoaded(InterceptUpdateCallback);
function InterceptUpdateCallback(sender, args)
{
var updatedPanels = args.get_panelsUpdated();
for (idx = 0; idx < updatedPanels.length; idx++) {
if (updatedPanels[idx].id == "myUpdatePanel") {
StartSmth();
break;
}
}
}
And it works when UpdatePanel is not inside another UpdatePanel. But when it is inside another UpdatePanel updatedPanels[idx].id has parent Updatepanel id. So how can I get the id of UpdatePanel which initiated the request (the inner UpdatePanel)?
I have a web user control with one updatepanel (pnlUpdate_2), some controls and one apply button. I display the web user control as a modalpopup in my default page. In my default page i have an updatepanel (pnlUpdate_1) with a gridview and I modify that gridview with the apply button of the web user control. The web user control is for made a custom search of the gridview data. I have a problem with both updatepanels. If I set the updatemode as always in one of them (pnlUpdate_1) and the other as conditional (pnlUpdate_2), the pnlUpdate_1 make a postback in the pnlUpdate_2; I'm not an expert on this but I think that's why the pnlUpdate_2 disappear and reappear after postback of some controls in that updatepanel (not the apply button, it close the modal after postback). I try all the combinations and the problem persists. So I put both updatepanels as conditional and in some way it works; now the problem is that when I click the apply button in pnlUpdate_2 to modify the gridview in pnlUpdate_1 the pnlUpdate_1 not made the postback I get the pnlUpdate_2 postback when I use some control inside the pnlUpdate_1.
How can I postback the pnlUpdate1 from pnlUpdate_2 with the apply button?
A user clicks a hyperlink in a page. Server A handles the request and redirects the client to a URL on Server B (more specifically I am using the Response.Redirect method in .NET on server A). I have been asked to restrict access to Server B to redirects originating from Server A only (by blocking IP's other than Server A's). At first I thought this could be achieved by using the HTTP 'referer' header, however, it seems it is up to the browser to set this to a URL (rather than IP), and it is not guaranteed to do so.
I guess there is no way to set the HTTP 'referer' on server A in .NET (to server A's IP)? (my intuition is that would be a security hole). So my question is, how can I restrict access to Server B to redirects originating from Server A?
URL...In the above page, the button fires the javascript first, then the code-behind sub runs. The problem I have is I am in the middle of a code-behind sub routine that checks if a user is logged on the a PC. If there is a users logged on, I want the confirm popup to ask whether to reboot anyway or cancel. The code needs to dictate whether to call the javascript, not some direct button click. Then I need the remainder of the code-behind sub to execute based on the users choice.
I can call the client script in the code-behind sub using 'RegisterStartupScript...'; then I can get the page's form value. The problem is that the sub runs to completion without waiting for the javascript code to run. This causes code-behind variable to get checked before it's set by the client and it nevers works.
I am designing a web application and have separate layers for UI, BAL, DAL and DB, while using custom business objects and collections. The app will be used by over 10,000 + registered used and it becoming more complex as I add new functionality such as inline editing and batch processing of collections with transactions ... which has me up late at night trying to design the best approach for this ...In some UI web forms, I bind say 3 controls to 3 different collections. The UI calls the BAL classes for the required collections, then binds the collection returned. So for each collection I want, a db connection is opened and closed. As I understand database connectivity adds overhead so Is there anyway I can design this so 1 database connection is created for a unit of work in a 3-tier or n-tier architecture?
When I click a button that causes a postback on the UpdatePanel it calls the tinyMCE.triggerSave().
It reloads the panel and the editor show up again, but when I try to call tinyMCE.triggerSave() the second time I get the following error:
g.win.document is null
I though it was getting the old instance, but I'm also removing the control (tinyMCE.execCommand('mceRemoveControl',false,'Editor');) after I call the save. Even so it still crashes the second time.
I created a form in a popup div, that contain an UpdatePanel with ImageButtons in it.Initially, I used LinkButtons to test but I wanted ImageButtons. The thing is, it works well with LinkButtons and not with ImageButtons (absolutely nothing happens).
I put the following javascript code inline but it doesn't trigger after the updatepanel is done with its postback:
function EndRequestHandler(sender, args) { alert("this should work"); } Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler);
I'm having few UpdatePanels on my master page. And then, I have RadTreeViewcontrol on the page, that should cause partial postback each time node is clicked. Everything works fine there. Since I'm using the same tree on some other pages, I moved this functionality to UserControl. Stuff I've done before, so no problem. Moved some code to ascx, created some events. Everything always worked for me well. But not now. RadTreeView is nested inside UserControl, and this control on master page with update panels, see below:
Imports Telerik.Web.UI Public Class ProductTree Inherits System.Web.UI.UserControl Public Event NodeExpand As EventHandler(Of ProductTreeNodeExpandEventArgs) Public Event SelectedNodeChange As EventHandler Protected Sub ProductTree_NodeExpand(ByVal sender As Object, ByVal e As RadTreeNodeEventArgs) _ Handles treeProductTree.NodeExpand Dim nodeId As Integer = CInt(e.Node.Value) Dim evetArgs = New ProductTreeNodeExpandEventArgs(nodeId) RaiseEvent NodeExpand(Me, evetArgs) //'some logic End Sub Protected Sub ProductTree_OnNodeClick(ByVal sender As Object, ByVal e As RadTreeNodeEventArgs) _ Handles treeProductTree.NodeClick RaiseEvent SelectedNodeChange(Me, New System.EventArgs()) End Sub End Class
What I don't know is: why is this causing full postback instead of partial? I suspect that it may have something to do with raising my for SelectedNodeChange, but I don't know how to deal with it other way. I need to let other components know, that node selection changed. How can I improve this to make it work with UpdatePanels?
I have run into what seems to be a very famous problem: My updatepanel fires a full postback instead of a async postback. The normal solution is to give all controls you add dynamically an ID, which I have done, but I still get a full postback instead of my async postback. Here's the code:
So, I actually add an AsyncPostBackTrigger to the menu, so the ItemCommand event should be registered. What happends when I click an item in this contextmenu, is a full postback happends. I have been trying to play with the ChildrenAsTriggers property without help.
My page contains a Repeater that is loaded with data asynchronously as the data becomes available, using an UpdatePanel to manage the asynchronous requests.The page contains something a little like this:
The problem being that the LinkButton does not appear to trigger a postback of any kind- there is no visible response to clicking on it and putting a break point on the event listener in the codebehind, it is never triggered. hat the linkbuttons ceased working.
I know about Always vs. Conditional, I just need to know exactly which update panel's data needs to be refreshed (not taken from app tier cache) on the serverside.
I am aware that a FileUpload requires a full page postback. I read the article http://www.4guysfromrolla.com/articles/090209-1.aspx[^]I tried to install a PostBackTrigger programmatically to get a full postback only on the ImageButton1 control. All other postbacks must be partial. (GridView sorting, paging, ...)In code behind I do :
[Code]....
The above code does not seem to install a full postback only for the ImageButton1, so the file upload fails. How can I make this work ?
This gives a quite strange result: Every 5s my whole page gives a full postback. When I comment in (activate) the asyncpostbacktrigger, the updatepanel does not give a full postback. In the PlayerItems_ItemDataBound I have the following code (which, I do think, do not matter):
protected void PlayerItems_ItemDataBound(object sender, ListViewItemEventArgs e) { if (e.Item.ItemType == ListViewItemType.DataItem) { ListViewDataItem dataItem = e.Item as ListViewDataItem; if (dataItem != null) { BaseItem myItem = dataItem.DataItem as BaseItem; Panel itemPanel = new Panel(); Literal firstLiteral = new Literal(); firstLiteral.Text += "<div id='smoothmenu1' class='ddsmoothmenu'>"; firstLiteral.Text += "<ul>"; firstLiteral.Text += "<li><img src='Images/Game/Items/" + myItem.ItemImageUrl + "' />"; firstLiteral.Text += "<ul>"; // Add all events bound to item into contextmenu itemPanel.Controls.Add(firstLiteral); foreach (Delegate del in myItem.Actions.Items) { Literal firstItLit = new Literal(); firstItLit.Text += "<li>"; itemPanel.Controls.Add(firstItLit); MethodInfo methodInfo = del.Method; string commandName = myItem.ItemId + "|" + methodInfo.Name; LinkButton btn = new LinkButton(); btn.Text = methodInfo.Name; btn.Click += new EventHandler(btn_Click); btn.CommandName = commandName; itemPanel.Controls.Add(btn); Literal secondItLit = new Literal(); secondItLit.Text += "</li>"; itemPanel.Controls.Add(secondItLit); } Literal btnLiteral = new Literal(); btnLiteral.Text += "</ul>"; btnLiteral.Text += "</li>"; btnLiteral.Text += "</ul>"; btnLiteral.Text += "</div>"; itemPanel.Controls.Add(btnLiteral); Panel panel = (Panel)(e.Item.FindControl("ItemPanel")); panel.Controls.Add(itemPanel); } } }
When I create a NEW updatepanel, ItemsUpdatePanel1, it does not fire a full postback without the timer. I can even start copying items from ItemsUpdatePanel to ItemsUpdatePanel1, and suddenly the full postbacks happen. I tried 2 seperate times, and they started happening at different times.
I have got the following gridview with a UpdatePanel and approve and save button in each row. How do I create a full postback if approve button is click and asyncPostback if save button is click.
I have updatePanel in my ASP.NET 2.0 (migrated from ASP.NET 1.1) web app. It doesn't work as it always postback instead of callback. I already set<xhtmlConformance mode="Transitional" /> but still not working. Previously, it just working.
In Page_Load, Request["__EVENTTARGET"] is an empty string.IS there some way I can find out which button triggered the postback before hitting the buttons event handler
I have a webform which has an updatepanel with a combobox, add button, delete button and a table. The functiion of the two buttons is to add or delete table rows. However, the table is getting cleared everytime the combobox item is selected. Is there anotherway of retaining the table contents?The code for the updatepanel is:
I have an Usercontrol which has a update panel that being postback by a timer, and it is nested in a parent page which has its own update panel. Every time that the update panel in UserControl cause a postback to server my main page's scrollbar being reset to top or buttom of the page. I enabled viewstate of parent page but nothing, and when enable parent page's MaintainScrollPOsitionOnPOstback it cause a problem for Usercontrol updatepanel postback !
I have placed a user control inside update panel after doing asynchronous postback of page associated js file of that user control is not working so that is there any method to exclude a control from updatepanel in another word i don't want to post that user control.
<asp:UpdatePanel ID="upPnlAnswerList" runat="server"> <ContentTemplate> // another code that required to placed inside updatepanel <div id="miancontainer" class="containerr" <klmsuc:Share ID="shareUserControl" runat="server" /> [code]...
