AJAX :: Calling A Server Side Function From Javascript Without Using PageMethods?
Sep 17, 2010
i have used PageMethods to access the server side functions in javascript , but now my problem is that with pagemethods your controls will not go throught the full page lifecyle and these leads me to have "Object not set for an instance of an object" error. Now can someone come with a differnt approach without using pagemethods. What i want is to call a server side function , i dont want to pass any parameters to it
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Sep 17, 2010
i have used PageMethods to access the server side functions in javascript , but now my problem is that with pagemethods your controls will not go throught the full page lifecyle and these leads me to have "Object not set for an instance of an object" error. Now can someone come with a differnt approach without using pagemethods. What i want is to call a server side function , i dont want to pass any parameters to it
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Jan 24, 2016
I am calling server side methids from client side using PageMethods. Can those methods return value back to client side. If yes then how and if no then how can that be achieved? refer to my code below.
function getValuesFromPSS(s,e)
{
debugger;
[Code]....
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Sep 14, 2010
Possible Duplicates: how to call server side function from client side - asp.net Calling ASP.NET Code Behind function from Javascript Calling ASP.NET server side method via JQuery While loading an aspx page, how is it possible to call a server side method with the client side code?Can u show one example?
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Jan 16, 2011
I have a project that uses PageMethods to call functions on the server. The server functions (written in C#) return the values as array of strings, without doing any kind of serialization and in the client side (from Js) the accessing of the return values is by using static variable called arguments. I found that sometimes for some users (cases are not repro) sometimes an exception occured
"WebServiceFailedException the server method 'Foo' returned invalid data. the 'd' property is missing from JSON."
Some searching on google I found that people are serializing the return values using DataContractJsonSerializer class and in js accessing the return value using one of the callback function Example:
function OnRequestComplete(result,
userContext, methodName) {
var Person = eval('(' + result + ')');
alert(Person.Forename);
alert(Person.Surname); }
So is the first technique is correct? or what?
P.S:
the function on the server is defined on the default.aspx.cs file as follows:
[System.Web.Services.WebMethodAttribute(), System.Web.Script.Services.ScriptMethodAttribute()]
public static string[] Foo(string s);
from the client side the calling is as follows
PageMethods.Foo("value",OnSuccess);
Also all the users have the same browser version (IE8)
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Feb 28, 2011
I want to do something a little bit tricky here. I want to call a server side fonction from the javascript. I know it can be done but I get some errors. This is my Javascript fonction where I want to call the server side fonction:
[Code]....
And this is the code in my VB page:
[Code]....
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Jul 22, 2010
What I want to do: dispose of a session upon detecting an "OnBeforeUnload" event in the client. I know it doesn't fire 100% of times (90% accuracy works fine for me)
Here I saw how to do it with ajax, this system, however, breaks down with ajax: I can't use it at all.
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Apr 27, 2010
I'm instantiating an asp:Button inside a data-bound asp:GridView through template fields. Some of the buttons are supposed to call a server-side function, but for some weird reason, it doesn't. All the buttons do when you click them is fire a postback to the current page, doing nothing, effectively just reloading the page.
Below is a fragment of the code:
[Code]....
The viewBtn above should call the viewBtnClick() function on server-side. I do have that function defined, along with a proper signature (object,EventArgs). One thing that may be of note is that this code is actually inside an ASCX, which is loaded in another ASCX, finally loaded into an ASPX.
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May 12, 2010
I have developed a web application which contains aspdotnet treeview control. In this treeview control has binded with some database value.. that controls has one parent node and more than one child nodes for each parent node.
my problem is here, when the user clicks the parent node, I need to fire a javascript onclick function before the server side event(SelectedNodeChanged) called..
If I provide javascript to the parnet node when it is binding, then I could not fire the server side event(SelectedNodeChanged).
How to provide onclick javascript event for parent node in treeview control even the parent node has SelectedNodeChanged event.
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Jan 27, 2010
<asp:LinkButton CssClass="button" ID="btnApply" runat="server" OnClick="btnApply_Click()" OnClientClick="Apply1('btnApply')" >
hi ihave this functin in .vb file
Protected Sub btnApply_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnApply.Click
end sub
and javascript function also in aspx
function ApplySummerization(id)
{
alert("hai");
}
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Oct 29, 2010
How to call server side event(textchanged) in javascript. When the user enters the data in text box and directly closing the page with out allowing the textbox to fire the textchanged event when textbox autopostback property set to true. Now i want is when the user closes the page the changed text in textbox should affect the database and textchanged event should fire only once.
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Feb 8, 2011
I want to call a validate function on asp:button click event and also want to do some server side work on this click like adding values to session variables and redirecting page to new one.
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May 21, 2010
I am working with vs 2008 and C#. I am having a code behind function as follows(not complete)
protected void btnShowZone_Click(object sender, EventArgs e)
{
string setofalllatsandlongs = null;
foreach (string s in ar)
{
[Code].....
</div>In thIn the click event of the btnShowZone(in bold) i am calling the code behind method and from that i am trying to call the js function using the script manager class.
But the javascript method is not getting called.the control is not going to the js function.
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Apr 4, 2011
I am using Ajax's EnablePageMethods way to call server side code using javascript. The problem is that in IE8 the page automatically refreshes after the ajax call has been completed i.e. the server side function has been executed successfully. I want the same to happen with Chrome and Firefox but it doesnt refresh the page once the server side function has been executed.
I am using this way to call server side code from Javascript -- [URL]
this is the javascript function:
[code]...
this is where i am calling the javascript event:
<a href='myPageName.aspx' onclick='javascript:editNode(1);return false;'>Delete</a>
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May 7, 2015
function DatalistFunction(argumentid) {
set_minimum_points_for_session = value;
SetSession(set_minimum_points_for_session);
Redeem(argumentid);
}
this is my code which i am calling on link button onclientclick event.
sometimes what happens is redeem function gets called first and then setsession function gets called. do i need to put some delay or something between the 2 functions, so that they run everytime in their own order
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Jun 30, 2010
I have a web form in which I create many controls including a submit button dinamically.
I want to check a condition in the button's click event and if it comes true, call a javascript funtion to show an alert. but the problem is when I use :
Page.RegisterClientScriptBlock("ClientScript", script);
in the btn_Click event, it is not working. I guess the script should be registered at page_load.
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Jul 3, 2010
How to call JavaScript function from server side
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May 19, 2010
I have a function in Code Behind, Can any one let me know "How would I call this function using javascript"?
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Mar 26, 2010
I've got a lightbox with a small form (2 fields) in it, inside an UpdatePanel, and I want to close this lightbox (must be done via javascript) when the 'Save' button is pressed.
However, there is a need to have a server-side CustomValidator on the page, and I only want to close the lightbox if this returns as valid.
Does anyone know a way to trigger javascript (or jQuery) code from a server-side validator?
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Jul 26, 2012
I have javascript function like below
function SetScrollEvent() {
window.scrollTo(0, document.body.scrollHeight);
}
I have button within update panel.
<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<asp:button onclick="" runat="server">
</ContentTemplate>
</asp:UpdatePanel>
On button click i want to call javascript.
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Mar 16, 2011
I know that I can receive an javascript object from the server via ASP.NET AJAX using Json. But I am not sure how can I send an javascript object from my client-side javascript to my server-side code. And if I can, how can I extract this object in my server-side code and access its members?
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Jan 10, 2010
I Getting A Problem In DataGrid's ItemDataBound Event. I Am Calling A JavaScript Function In DataGrid's ItemDataBound Which Retrun The CellIndex And RowIndex Number On Which UserClick After That I Am Re-Binding The DataGrid With jQuery Function After That ItemDataBound Event Not Working. I Want To Call The Same Function Again. Is Their Any Method To Call A Server-Side Function On ItemDataBound Event Except Client-Side Function..
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Dec 30, 2010
I am using a dropdown, a devexpress grid view and a button on my page.
My gropdown contains the months in the format MM/YYYY, and on dropdown's selection change the data binds in the grid view.
the functionality of button is to go on previous page as same as back button of browser.
Now, my prob is that if i select any month and then select another month, the data changes.
but now when i click on back button having onclick ="history.go(-1)", changes the data on the grid view but the month in the dropdown remains the same.
For example:
Suppose, first i have month selected as 02/2010. At this time the data in grid view is for exapmle 01234
now when i select month 03/2010 the data in grid changes to 56789
now when i click on back button, then data in grid changes to 01234 but the month in dropdown remains to 03/2010.
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Jan 3, 2011
Getting error calling Javsscript function from another Javascript function
[Code]....
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Jan 10, 2010
I am building a user registration form in asp.net. I want to check if the username is available or not on the leave event of the TextBox. I am not able to get the Leave Event of the TextBox.
Should I use OnBlur event of the Html TextBox.
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