I wonder if I have any other method but a hidden field to post a JSON object to the server on full postback.
Imagine you have a form (with textboxes, checkboxes, etc) and you need to post a json string when the user post the form. This means, I would post all the form values + the json string but I can't come up with any solution but a hidden field.
I have an external javascript file which I include to my page on the code behind (as seen below).
My problem is, when I my page makes a postback (not partial one), I check the loaded scripts by using FireBug, and I cannot see the javascript file in the list after the post back. I asusmed once it is included to page on the first load, browser will be caching it so that I do not need to re-include it.
What am I doing wrong?
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I try to use the jquery + json to get all elements in form and build a JSON var to post in a ASP.NET MVC method.
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It method get all fields in a form and build a JSON, but it dont put JSON inside JSON.
Example:
If i have the follow form:
<input name="person.name"><input name="person.age"><input name="person.address.street">
The serialized string build a JSON like this
{ "person.name": "??", "person.age": "??", "person.address.street": "??" }
I need a plugin or some function to generate like this:
{ "person": { "name" : "??", "age" : "??", "address":{ "street": "??" } } }
Is something like this possible?
Dim iCounter as Integer
Dim iQuantity as Integer = 10
Protected Sub btnFoo_Click Handles btnFoo Yadda
For i as Integer = iCounter to iQuantity - 1
//do something with AsyncPostBackTrigger until iCounter = iQuantity - 1
//then trigger a full postback
Next
End Sub
I am new to the concept and feel like there must be something really easy that I am missing.
I use the JavaScriptSerializer class of ASP.net to serialize my object and return it to the client side. How can I deserialize the string using JavaScript?
View 4 Repliesi had a gridview, inside that i had a download imagebutton, on clicking this button i need to download the file.
and this gridview is inside update panel. i think trigger to be used but i used both postbacktrigger and asynchronus postback trigger. but it is not triggering the button instead it is giving error.
I implemented the AsyncFileUpload control on a web page. This web page requires uploaded files to appear in a gridview. The gridview contains the following columns: "File Name", "Confidential" Check Box, and a "Remove" button to remove the uploaded file.
Since the AsyncFileUpload postback does not do a full page postback, I need to "force" a postback on the OnClientUploadComplete event of the AsyncFileUpload control in order to render the gridview after uploading a file. In the OnClientUploadCompleteevent, I use javascript to call __doPostBack. In this postback, I only bind my gridview and display the file information (I don't re-save the file).
The problem: On the AsyncFileUpload's first "partial" postback, the file is successfully uploaded, as expected. On the second postback that I force with __doPostBack, the file is re-uploaded. You can verify this by using Google Chrome, which displays the upload progress. The behaviour is as follows: After selecting the file, the progress increments from 0% to 100% and the file is uploaded. After this, the __doPostBack executes, and you can see the upload progress increment again from 0% to 100%.
How can I make sure the Gridview is properly populated, but that the file is not uploaded twice?
I attached a sample solution which contains the issue:
[URL]
For now, I just want to use HTTP POST to send json to asp.net mvc2 controller.Since the JSON is actually a list of JSON objects, and each of them has different fields & length, so it hard for me to make up a input model.So I want to know is there a way for me to post JSON without model/ajax to a controller in ASP.NET MVC2?
View 2 Repliesc# - How do I force full post-back from a button within an UpdatePanel?
View 3 Repliesis it possible to make a control NOT load Post Data on postback?
View 3 RepliesI have the following javascript:
$.post("/Authenticated/DeletePage/" + PageId);
showStatus("Page deleted...", 10000);
I would like to instead pass showStatus() text that is returned by the $.post() call, rather than hardcoded text. How do I do this?
As I am getting Problem while hosting WCF Service on Win 2003 Server.As it is working fine in my local P
View 1 RepliesIs it safe to send a POST to a web method with a JSON string containing a clear text version of a password for authentication?Who could sniff that password on the way from client to web method? I saw some posts a while ago on "salting" a password - is that something you do in JS on the client side and then "unsalt" on the server?
View 5 RepliesThe ideal goal is to consume .asmx web service using jQuery like this
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have this site that has an api that can provide city name if I send my zip code as a parameter. http://www.postnummersok.se/api?q=16447the result is returned as a json object. Now i just want to read the result in my js function.I have tried the following but it always returns null:
function postnr() {
This is what i am trying to do with asp.net updatepanel.i have button and a panel inside my updatepanel. when the button inside the updatepanel gets clicked i want to dynamically add new controls such as LinkButtons to my panel1 without full post back. Now when the dynamically added controls gets clicked it causes a full post pack and also not calling "LinkButton1_Click" event. i am sure i am doing something wrong here.
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I have a scenario like below:I navigate to the reader page with the below form data
<form id="mainForm" action="Reader.aspx" method="post">
<input type="hidden" id="bookId" name="bookId" />
<input type="hidden" id="startPageId" name="startPageId" />
</form>
Initially the hidden variable values will be bookId=1 and startPageId=5
I navigate between the pages by using javascript and assume the startPageId will now change to 8.I want the new value to be stored in the above form data and want to submit the same page with different form data
bookId=4
startPageId=10
When I click on the browser back button, I want the user to be navigated back to the BookId=1 and startPageId=8
I'm using the WYSIWYG editor TinyEditor (http://www.leigeber.com/2010/02/javascript-wysiwyg-editor/), and I'm having an issue recalling the updated data. I searched the forum and found someone else had the same issue:
http://forums.asp.net/p/1526709/3684896.aspx#3684896?Accessing+textarea+value+in+code+behind
Thing is, I think I've done everything in the post, but my code is just not working. When I click submit, the variable in the code behind (val) isn't capturing any data
- Object reference not set to an instance of an object.
Here's my code:
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And the code behind:
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i have upgrade my website from framework 2.0 to 3.5 but i have problem with ajax .I get full postback when i click a linkbutton inside update panel .
View 14 RepliesI'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:
<asp:Panel ID="pnlContentWrapper" runat="server" CssClass="ContentWrapper">
<div id="HeaderBreadCrumb">
<asp:ContentPlaceHolder ID="HeaderBreadCrumbContent" runat="server" />
</div>
<div id="HeaderMenu">
<asp:UpdatePanel ID="upnlTreeMenu" runat="server">
<ContentTemplate>
<asp:ContentPlaceHolder ID="HeaderMenuContent" runat="server" />
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="treeProductTree" />
</Triggers>
</asp:UpdatePanel>
</div>
<div id="TreeDiv">
<fp:ProductTree ID="treeProductTree" runat="server" />
</div>
<asp:Panel ID="ContentDiv" ClientIDMode="Static" runat="server">
<asp:UpdatePanel ID="upnlTreeContent" runat="server">
<ContentTemplate>
<asp:ContentPlaceHolder ID="TreePageContent" runat="server" />
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="treeProductTree" />
</Triggers>
</asp:UpdatePanel>
</asp:Panel>
</asp:Panel>
And the user control is really simple:
<%@ Control Language="vb" AutoEventWireup="false" CodeBehind="ProductTree.ascx.vb"
Inherits="ProductTree" %>
<div>
<telerik:RadTreeView ID="treeProductTree" ClientIDMode="Static" runat="server" EnableDragAndDrop="false"
SkinID="CustomSkin" CssClass="MasterProductTree" DataFieldID="NodeId" DataFieldParentID="NodeParentId"
DataTextField="NodeName" DataValueField="NodeId" />
</div>
And some code behind:
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:
HTML:
<asp:UpdatePanel ID="ItemsUpdatePanel" runat="server" UpdateMode="Conditional" ChildrenAsTriggers="False">
<Triggers>
</Triggers>
<ContentTemplate>
<asp:ListView ID="PlayerItems" runat="server" GroupItemCount="5"
onitemdatabound="PlayerItems_ItemDataBound">
<LayoutTemplate>
... Listview stuff ...
</asp:ListView>
</ContentTemplate>
</asp:UpdatePanel>
The interesting part is the C# code behind (method PlayerItems_ItemDataBound), which is like the following:
ImageButton imgBtn = new ImageButton();
imgBtn.ID = "itemBtn";
imgBtn.Width = Unit.Pixel(30);
imgBtn.ImageUrl = "~/Images/Game/Items/" + myItem.ItemImageUrl;
ContextMenu menu = new ContextMenu();
menu.BoundControls.Add(imgBtn);
menu.ItemCommand += new CommandEventHandler(menu_ItemCommand);
menu.AutoHide = true;
menu.RolloverColor = Color.Gray;
menu.ID = "MenuMenu";
Panel panel = (Panel)(e.Item.FindControl("ItemPanel"));
panel.Controls.Add(imgBtn);
panel.Controls.Add(menu);
AsyncPostBackTrigger trig = new AsyncPostBackTrigger();
trig.ControlID = menu.UniqueID;
trig.EventName = "ItemCommand";
ItemsUpdatePanel.Triggers.Add(trig);
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.
I'd like to programmatically force a full page postback to occur after an event is fired by one of the child controls. I can't add any triggers to make this work so it will have to be done via code.
View 2 RepliesI have an UpdatePanel with a button that, when clicked, calls a WebService. I attached an UpdateProgress to it that shows a "loading" gif while it runs. Everything works fine, but I need a full PostBack once the operation is complete because I'm using my company's custom template that displays an info message and enables a "Next" button upon completion.I've had partial success with the endRequestHandler but I'm not sure what to put in my function to force a full postback once the UpdatePanel has run its course. I'm getting into the endRequestHandler function but I have been unable to successfully get a full PostBack.Here is my current code (including several attempts), the bottom part being the focus:
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I'm at my wits end on this one looked/Searched/Played/Experimented and I need your help if you can.This page is going to be primarily used on a mobile device using Win Mobile 5 Need to Accomplish:Prevent Postback(serverside) of Page using JavaScript (Postback's slow down the page on mobile device)
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I have never done jquery and need some assistance/advice on something I am trying to do.I basically have an ASP.NET MVC Application.
What I want to do is, asynchronously be able to do a partial postback when a button is pressed.It's a simple application that should add items and retrieve existing items from an IEnumberable<T> collection.
so, when a button is pressed, it should be able to add the item into the collection on the ASP.NET site without having to do a full postback.
