.NET Tutorials, Forums, Interview Questions And Answers
Welcome :Guest
Sign In
Win Surprise Gifts!!!

Top 5 Contributors of the Month
david stephan
Gaurav Pal
Post New Web Links

WCF function call in page load not working asynchronously

Posted By:      Posted Date: September 15, 2010    Points: 0   Category :WCF
Hi all, I am trying to implement the WCF async function call in my page load event but, it not working asynchronously. Which means page content is displayed only after the asynchronous event is completed. This is my code         protected void Page_Load(object sender, EventArgs e)         {             if (!IsPostBack)             {                 ServiceReference1.Service1Client srv = new WebApplication1.ServiceReference1.Service1Client();                 srv.GetListCompleted += new EventHandler<WebApplication1.ServiceReference1.GetListCompletedEventArgs>(srv_GetListCompleted);                 srv.GetListAsync();             }         }           void srv_GetListCompleted(object sender, WebApplication1.ServiceReference1.GetListCompletedEventArgs e)         {         

View Complete Post

More Related Resource Links

JQuery Treeview plugin is not working with Ajax page load in ie8


Hi there,

I developed a page where i m using jquery treeview plugin to generate tree. It worked fine on FF, IE8 with out ajax.

But when my page loads thro' ajax call in IE8, it is not collapsing or expanding tree.

Any idea?

Thanks in advance.

Is there a function in Jquery which run only one time no matter load page or PostBack

In asp.net, I can use Method A to run somethings A one time, and somethings A will nor run when page is postback but In JQuery, I hope to run something B one time when the page is loaded, but if I use Method B, the "Somethings B" always run even the page is pastBack, how can I do? Thanks! ------------------Method A------------protected void Page_Load(object sender, EventArgs e){    if (!IsPostBack)    {       //Do Somethings A    } }   ------------------Method B------------$(document).ready(function () {   //Do Somethings B})

AJAX call is not working on F5 load balancer web farm setup

I have the following web farm setup in production server.Browser --> HTTPS --> Load Balancer --> HTTP --> webserver nodeF5 Load balancer handles off box SSL termination. It implies that SSL resides on F5 load balancer. Problem Statement: Ajax calls do not go through unless "Access data sources across domains" option is enabled in IE security settings. I have the similar setup in staging server except F5 Load balancer. The ASP.Net application makes perfect AJAX calls on both HTTP and HTTPS.However, the staging server web farm use windows NLB and SSL resides on individual web server nodes

How to call javascript function in master page

helloi have javascript file 'script.js' where i have writt en a function for print. but this function is working fine if i am not using master page in my report page but the question is i want to use master page for my report page where i am calling javascript function but it is not working . Do help me regarding MasterPage and Javascript function.

how to call dropdown SelectedIndexChanged event in page load event in c#


Hi everyone,

in my web form i have a department dropdown box, in its selectedIndexChanged event i have to fill the equipment dropdown box and in equiment dropdown selectedIndexChanged i have to fill out the other textboxs.

the depratment dropdown box get its value from sqldatasource.

 <asp:DropDownList ID="dp_deptname" runat="server" DataSourceID="SqlDataSource1" DataTe

How to call a javascript function from .cs page



I have a javascriipt function in my .aspx page. How can I call this function from .cs page, so as that the function accepts a parameter that I send it from .cs page on page load? Please help me in this regard.

Thanks in advance.

Call javascript function on containing page from user control


I have a toolbar in a user control.  I would like to wire the toolbar's onclick event to a javascript function on the page that contains the user control.  What's the easiest way to do this?



I have a asp.net (.aspx in vb code) page and that needs to access  remote web service Asynchronously.

I have a following webmethod available in the remote web service:

<WebMethod(MessageName:="get_output_information")> _

 Public Function get_output_information (ByVal tran_id As Object) As DataSet


            'do some code here

            Return ds1

        Catch ex As Exception

            Throw New soapException("An Error occurred while processing output information.",SoapException.ClientFaultCode)

        End Try

    End Function





Using jQuery to directly call ASP.NET AJAX page methods

Here I am looking to explain how to call page methods using jQuery. Using jQuery to directly call ASP.NET AJAX page methods

Open ModalPopup dialog on page load


Is there a way to make a modal popup panel active on page load so that the user can't do anything until they deal with the popup dialog?

Content page control passes as argument to javascript function


Here is the content page:


<%@ Page Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true" CodeFile="JavaDynamicCopyValue.aspx.cs" Inherits="JavaDynamicCopyValue" Title="Untitled Page" %>
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
 <script type="text/javascript" >
 function copyValue(input, output )
   ouput.value = input.value;
   return true;
 <asp:TextBox ID="txt1" runat="server" onchange="copyValue(this,document.getElementById('<%=txt2.ClientID%>'))"></asp:TextBox>
    <br />
    <br />
    <asp:TextBox ID="txt2" runat="server"></asp:TextBox>


I got a javascript run time error says output is undefined. if I view source of the page, the txt1 markup became:

<input name="ctl00$ContentPlaceHol

Slow page load during a list query one time during the day


We have a monitoring tool set to check to see if the home pages for our 3 web apps load in under 60 seconds every 10 minutes.  All 3 web apps load in under 3 seconds on every 10 minute check except for one exception.  One check every day one of the web app's home page takes longer than 60 seconds to load.  This happens at 11:45PM when there is very little user usage on the environment.  The characteristics of this page are as follows: The only thing on the page is a list view web part which was added by the browser.  The page has not been customized with SPD or code at all.  The list that it pulls is a simple links list that has 281 items on it.  The view pulls all 281 items and displays them in sets of 100.  I cannot find any associated event in the server events and/or SharePoint ULS logs nor are there any daily sharepoint timer jobs running at that time.  Our full index happens at midnight with incremental happening hourly.  Our enviroment is 2 WFEs, 1 App/indexer and we have a separate SQL cluster backend.  

Could someone lead me possibly in the direction I should take next in my troubleshooting?   

databind from a custom function call


in datalist templatefield, i want to bind an imagebutton's visible property. the scenario is .. it is a picture comments page like one in facebook. if its your own comment, the delete button is shown, otherwise not.  the problem is .. for the imagebutton i want to set visible = false, if the user logged in is the same user as the one who commented. how can i do that ? please help

currently im using this code on datalist databind event. but the label is returned as null

public bool set_visibility()
        Label lb = DataList3.FindControl("Label7") as Label;

        if (lb.Text == Session["user_id"].ToString())
            return true;
            return false;

findcontrol dosent return the control.

external content not load in page like style and js in asp.net mvc when i use area


i am working on a asp.net mvc 2 website who have a area and i have a problem with them.

i use different different url routing for application settings. i have two folder called style

first folder location in main directory  /Style/style.css

second folder location in Area area/style/style.css

everything is work fine in application but when i used style.css from main directory in my area's views then style not worked. when i track them from firebug then i got error "The resource could not be found" but path is correct.

sombody tell me to use absolute path to solve this issue. how i can use absolute path to declare resource url in views.

any suggestion , sollution on this issue who can help me to solve this issue.

javascript function not working with datalist


I have a datalist and there is a check box within this datalist in a .ascx page.  But I have to have an image out side the datalist.  So here is the code and its not owrking.  When I click on the image, I dont see any alert box. 


<script Language="JavaScript" type="text/javascript">


function validate_checkbox()



// set var checkboxSelect to zero

var checkboxSelect = 0;

var sProducts = "";


var multiCheck = window.document.forms["frmCompare"].CompareCheck.length;


if (multiCheck != null)


    // Loop from zero to the one minus the number of checkbox button selections

    for (counter = 0; counter < window.document.forms["frmCompare"].CompareCheck.length; counter++)


        if (window.document.forms["frmCompare"].CompareCheck[counter].checked)


            var seperator = (checkboxSelect > 0)?",":"";

            sProducts += sep

page load timeouts and http 500 on MOSS2007


Hi All

I'm hoping someone can point me in the right direction re troubleshooting. We have a MOSS server farm - 3 WFE 1 APP 1 SQL cluster. All Server 2008 sp1 x64. We see occasional http timeouts (HttpException (0x80004005): Request timed out) with associated http 500 error. I have enabled failed request tracing and can see the following:

SiteId 754431215
AppPoolId SharePoint - intranet.*********.com80
ConnId 1610966466
RawConnId 0
RequestURL http://intranet.*********.com:80/Pages/default.aspx
RequestVerb GET

and then later in the trace:

ModuleName IsapiModule
Notification 128
HttpStatus 500
HttpReason Internal Server Error
HttpSubStatus 0
ErrorCode 0
ErrorCode The operation completed successfully. (0x0)

The problem happens on other pages too but the rest of the time the page is returned in less than 5 seconds. The server app logs and sharepoint ULS logs do not give any more detailed info. What I want to know is what other troubleshooting step can I take for http500 errors.

In the past on 32bit environments I have used de

how to call thickbox function in codebehind



i want to call thickbox.js function in codebehind , below the code in jquery

i want to call below code in codebehind

function tb_remove() {
    if (typeof document.body.style.maxHeight == "undefined") {//if IE 6
        $("body","html").css({height: "auto", width: "auto"});
    document.onkeydown = "";
    document.onkeyup = "";
    return false;

ASP.NetWindows Application  .NET Framework  C#  VB.Net  ADO.Net  
Sql Server  SharePoint  Silverlight  Others  All   

Hall of Fame    Twitter   Terms of Service    Privacy Policy    Contact Us    Archives   Tell A Friend