ASP.NET AJAX Discussion and Suggestions

Re: PageMethods is undefined

ponkarthik — Wed, 07 Jan 2009 08:22:47 GMT

Thanks to all

this post is really helped for me..

Re: PageMethods is undefined

inmykingdom — Tue, 18 Nov 2008 20:32:18 GMT

i don't have the answer either, but you should use webservices instead of pagemethods instead. it's a lot better. you're pagemethod has to be static anyway, and webservices also read your cookies, so why not...

http://www.asp.net/Ajax/Documentation/Live/tutorials/ASPNETAJAXWebServicesTutorials.aspx

Re: PageMethods is undefined

rmdw — Tue, 18 Nov 2008 19:38:59 GMT

I am by no means an expert with PageMethods - especially when things go wrong! But if you have a small working version then I'd start from there and start expanding it, testing it every so often, until you get to the current codebase you have with this code you've provided. Clearly something is missing but I'm not sure what.

Robert

Re: PageMethods is undefined

XCellent — Tue, 18 Nov 2008 14:18:50 GMT

Hi,
i hope someone is checking this thread and can help me out.
The errormessage i get is in a lot of posts.
Sometimes the people forget to EnablePagemethods or anything else but not here.
Ok but anyway, lets come to the point.

I developed with ASP.NET and AJAX a little demo that runs fine.
In this demo i use AJAX to retrieve the time by using a Pagemethod

Afterwards i used the same code to implement a webpart for WSS/Sharepoint.
It seams perfect but if i try to call the webmethod by a click on the button i get the error "'Pagemethods' is undefined"

The webmethod is not added to the generated html-sourcecode.

Does anybody has an idea?
I posted the quellcode below!

Thx

2 3 4 5 6 7 8     9 10 11 12    13 14   { 15    16    17       { 18    19    20    21    22           { 23           } 24    25    26           { 27    28    29    30    31    32    33    34    35    36    37    38    39    40    41    42    43    44    45    46    47    48    49    50    51    52    53    54    55    56    57    58    59           } 60    61    62           { 63    64    65               { 66    67    68    69    70                   { 71    72                   } 73               } 74    75    76           } 77    78    79           { 80    81               { 82    83    84                   { 85    86                   } 87               } 88    89           } 90    91    92    93    94           { 95    96           } 97    98    99           { 100   101   102   103   104          } 105      } 106  } 107

Re: PageMethods is undefined

rmdw — Sat, 01 Nov 2008 05:19:33 GMT class="coloredcode">1 using System; using System.Runtime.InteropServices; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Xml.Serialization; using System.Web.Services; using Microsoft.SharePoint; using Microsoft.SharePoint.WebControls; using Microsoft.SharePoint.WebPartPages; namespace LitwareWebParts [Guid("dde26c8c-6328-47e3-9635-5f77d1581a2c")] public class AjaxTime : System.Web.UI.WebControls.WebParts.WebPart private TextBox txtTime; private Button btnUpdate; public AjaxTime() protected override void CreateChildControls() base.CreateChildControls(); this.Controls.Add(new LiteralControl("Uhrzeit zu der das Control geladen wurde: " + DateTime.Now.ToLongTimeString() + "<br />")); txtTime = new TextBox(); txtTime.ReadOnly = true; btnUpdate = new Button(); btnUpdate.Text = "Aktualisieren"; btnUpdate.OnClientClick = "return getTime();"; LiteralControl litButton = new LiteralControl("<input type='button' value='abfragen' onclick='return getTime();' />"); this.Controls.Add(litButton); this.Controls.Add(this.txtTime); this.Controls.Add(this.btnUpdate); string JavaScript = null; JavaScript += "\n"; JavaScript += "function getTime()\n"; JavaScript += "{\n"; JavaScript += " PageMethods.getActualTime(methodCompleted);\n"; JavaScript += " return false;\n"; JavaScript += "}\n"; JavaScript += "\n"; JavaScript += "function methodCompleted(results, context, methodName)\n"; JavaScript += "{\n"; JavaScript += " $get('" + txtTime.ClientID + "').innerText=results;\n"; JavaScript += "}\n"; JavaScript += "\n"; Page.ClientScript.RegisterStartupScript(typeof(string), "getTime", JavaScript,true); private void EnsureScriptManager() ScriptManager scriptManager = ScriptManager.GetCurrent(this.Page); if (scriptManager == null) scriptManager = new ScriptManager(); scriptManager.EnablePageMethods = true; if (Page.Form != null) Page.Form.Controls.AddAt(0, scriptManager); scriptManager.EnablePageMethods = true; private void EnsureUpdatePanelFixups() if (this.Page.Form != null) string formOnSubmitAtt = this.Page.Form.Attributes["onsubmit"]; if (formOnSubmitAtt == "return _spFormOnSubmitWrapper();") this.Page.Form.Attributes["onsubmit"] = "_spFormOnSubmitWrapper();"; ScriptManager.RegisterStartupScript(this, this.GetType(), "UpdatePanelFixup", "_spOriginalFormAction = document.forms[0].action; _spSuppressFormOnSubmitWrapper=true;", true); // [WebMethod()] [System.Web.Services.WebMethod()] public static string getActualTime() return DateTime.Now.ToLongTimeString(); protected override void OnInit(EventArgs e) base.OnInit(e); EnsureScriptManager(); EnsureUpdatePanelFixups();

I'm hoping some are still checking this thread. My situation is similar but with a caveat. I did have my PageMethod working, when it resided on the Content Page. I'm now trying to get it working on my Master Page and am getting the same "PageMethods is undefined" error.

Here's my code:

[WebMethod]
public static void ProtectNewSessionData()
{
    object isNewSessionData = HttpContext.Current.Session["IsNewSessionData"];
    if (isNewSessionData != null && (bool)isNewSessionData)
    {
      BusinessObjects.SessionData.StoreSessionVariables(HttpContext.Current.Session);
      SessionData.SaveSessionObject("IsNewSessionData", false);
    }
}

I'm wondering if it's not permissible to use a WebMethod on a Master Page?

Robert

Re: PageMethods is undefined

MisterFantastic — Thu, 30 Oct 2008 17:56:31 GMT

Hi All,

This post is very much useful for me .Thanks

Re: PageMethods is undefined

Rupesh Bhatia — Tue, 17 Jun 2008 17:19:27 GMT

Yes i have added it in Scriptmanager...

function is made public and static (shared) ...but it showed me error on lines within the function as i am calling some other functions from that function.

Regards,

Rupesh Bhatia

Re: PageMethods is undefined

nikhilzkingdom — Tue, 17 Jun 2008 17:00:41 GMT

Is the method public?

Do you have EnablePageMethods="true" on the scriptmanager?

Re: PageMethods is undefined

Rupesh Bhatia — Tue, 17 Jun 2008 16:47:30 GMT

Can Someone please post an example of PageMethods used with Static Functions on server side in VB.net

I tried defining and declaring the server side function as Static but is didn't worked......maybe i went somewhere wrong.

Regards,

Rupesh Bhatia

Re: PageMethods is undefined

nikhilzkingdom — Tue, 17 Jun 2008 15:47:56 GMT

In order for PageMethods to work, the method needs to be a static method of the page class (and hence was designed to not allow access to the Page lifecycle or controls collection)

Re: PageMethods is undefined

Rupesh Bhatia — Tue, 17 Jun 2008 09:53:04 GMT

An alternative to using PageMethods was do Postback of UpdatePanel and do your functionality.

Following worked for me...

__doPostback('UpdatePanel1','');

Regards,

Rupesh Bhatia

Re: PageMethods is undefined

Rupesh Bhatia — Tue, 17 Jun 2008 07:29:27 GMT

Hi Al,

Am having sliders on my page which are created on client side in Init function thru javascript.

I have attached the bsCaratChange function with one of the sliders....to show the values changed in a textbox.

I want to call a server side function on this change of value in textbox.

I have made tht server side function as a WebMethod and trying to call it from javascript

But am getting "PageMethods is undefined."

Here is my code.

SliderCarat.attachOnChange(bsCaratChange);

function bsCaratChange(sliderObj, val, newPos, knobNumber)
    {
    document.getElementById('SliderCaratknob'+knobNumber).value = val;
    PageMethods.LoadGrid();
    }

</script>

<form>

<asp:ScriptManager ID="ScriptManager1" runat="server" EnablePageMethods="true"/>

</form>

Server Side code.................................

Imports System.Text
Imports System.Data.SqlClient
Imports System.IO
Imports System
Imports system.web.Services.WebMethod
Imports System.Data

<System.Web.Services.WebMethod()> _
Public Function LoadGrid()

...Code....

End function

Kindly let me know if am misssing out somewhere...any suggestions/alternatives will be appreciated.

Re: PageMethods is undefined

nikhilzkingdom — Tue, 14 Aug 2007 16:58:23 GMT

also page methods needs to be static in code behind

[WebMethod]

public static bool foo

Re: PageMethods is undefined

Steve Marx — Mon, 13 Aug 2007 23:18:11 GMT

I believe you need EnablePageMethods="true" on your ScriptManager.

Re: PageMethods is undefined

inmykingdom — Mon, 13 Aug 2007 15:26:20 GMT

i was getting the same error message,

my fault was that i was using a usercontrol, and the PageMethod needs to be declared on the PAGE, not on the usercontrol used in the page