I am relatively new with the usage of asp.net and AJAX technologies and i am trying to add some ajax functionality to my web application.So, I was interested in finding out what the advantage is of using asp.net ajax libary and controls over the usage of simple javascript XMLHttpRequest.
View 3 Replies
Is there any simple DAL Generator for SQL Server/ MS Enterprise Library/VB.NET or C#?
View 7 RepliesI want to use Ajax XMLHttpRequest and get data from a database table and show it on the screen. I followed the link "Guide to Using AJAX and XMLHttpRequest from WebPasties" http://www.webpasties.com/xmlHttpRequest/index.html but there the code some part is written in PHP. I want entire steps and code in asp.net etc. Can you please give me a link where exactly I create XMLHttpRequest and get data from database. To achieve the above requirement do I need to AjaxFy my asp.net webapplication by adding configuration in the web.config file.
View 5 RepliesI need to retrieve a table from MS SQL 2005 database using AJAX.
But I only know a traditional way using ADO.NET.
I have read some books and it said we need to use XmlHttpRequest to retrieve data from database but I don't really understand the concept.
i want redirect ALL ajax requests(with X-Requested-With:XMLHttpRequest in header) to action: ajax(string function, string args) . How can i do it?For example: browser send ajax query with paramerts function=getImage&args=4 to url http://localhost/post/123 but we redirect query to http://localhost/ajax.
View 2 Repliesthe idea id I need to send data to the client to the server to inform the server of some events at the client, and i need to send data from server to the client to inform the client of some results on the server. now from client to server is easy I use xhr easy enough. and to send data from server to client I thought of using long polling in xhr so to test I wrote the following code:
[code]
<!-- Test.aspx -->
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Test.aspx.cs" Inherits="Test" %>
I am trying to take advantage of the Content Delivery Network Support and have run into a snag
I set the script manager to look like this
<asp:ScriptManager ID="ScriptManager1" runat="server" EnableCdn="true">
I have this function in aspx page.
[Code]....
and I call this function from JavaScript as below:
[Code]....
I want to know what is this technique called and what is the advantage of calling the function on that way
I am plannning to use the html editor control of asp.net ajax library in my website. what I need to do to deploy the asp.net ajax library on the server that is hosting my website ?
View 4 RepliesI am looking at the twitter api page http://apiwiki.twitter.com/ and I noticed that they have already built libraries that are wrappers against the twitter api. So I am thinking this is the best way to go but I am unsure which C# library I should use.
What I am trying to do is make some simple service or cmd line application that will help me automate retweeting.
So I am looking for a library that will allow me to get posts from other twitter accounts and then retweet them from another account.
I am not sure if the library can do this or not. Otherwise I was thinking of getting the RSS feed from the twiter account I want to get the twitters from parse out the new ones and use a library to retweet them on my own account.
I have not used twitter much so I am hopping someone can shed some light on this.
Value of window.XMLHttpRequest is Undefined when i run my application even in IE7 or IE8, Is there anything i have to enable in IE7 to make it work.
View 3 RepliesI'm now getting into EF and from what I'm seeing so far, I wouldn't have to worry about writing stored procedures any more. Looks like EF takes care of all of that -- including INSERT's that store data in multiple tables. One of the things they taught us when learning stored procedures was that they're compiled which has performance benefits. How does EF 4 fare against using stored procedures?
View 3 Repliesproblem in requesting response from an aspx url in xmlhttprequest...
xmlhttp.open("GET","a.aspx",true);
On "submitForms" click the fucntion "submitTest" is invoked. From jQuery documantation "submitHandler" would be called if form is VALID. So, the validation works and "submitHandler" is NOT invoked if form is INVALID. BUT, the XmlHttpRequest is sent anyway, though "submitHandler" isn't invoked.
<% using (Ajax.BeginForm("FormPost", "Customer", null, new AjaxOptions() { HttpMethod = "POST" }, new { @class = "form-container" })) { %> <%: Html.TextAreaFor(m => m.Name, new { width = 440, height = 100 })%> <input type="button" value="submitForms" /> <% }%><script type="text/javascript">function submitTest(){var forms = $(".form-container");forms.each(function (index, form) { $(form).validate({ submitHandler: function (form) { $.ajax( { .... }); } });});forms.each(function (index, form) { $(form).submit();});}</script>
I have many AJAX forms on the page and on button click I need to submit them all. Regular **forms.each(function (index, form) { $(form).submit();} won't work for me because in this way ONLY the last form will be submitted eventually. Therefore, I need submit them via $.ajax(...). But I want to enable submit ONLY and ONLY if form is VALID On "submitForms" click the fucntion "submitTest" is invoked.
From jQuery documantation "submitHandler" would be called if form is VALID. So, the validation works and "submitHandler" is NOT invoked if form is INVALID. BUT, the XmlHttpRequest is sent anyway, though "submitHandler" isn't invoked.
<% using (Ajax.BeginForm("FormPost", "Customer", null, new AjaxOptions() { HttpMethod = "POST" }, new { @class = "form-container" }))
{ %>
<%: Html.TextAreaFor(m => m.Name, new { width = 440, height = 100 })%>
<input type="button" value="submitForms" />
<% }%>
<script type="text/javascript">
function submitTest(){
var forms = $(".form-container");
forms.each(function (index, form) {
$(form).validate({
submitHandler: function (form) {
$.ajax(
{
....
});
}
});
});
forms.each(function (index, form) {
$(form).submit();
});
}
</script>
I am making an ajax call with jquery like:
$.ajax({
url: "path/to/webservice.asmx"
beforeSend: function(xmlHTTPRequest) {
//modify headers here
//remove cookies
}
success: function() {
//do stuff
}
}
What I would like to do in the beforeSend function is take the incoming xmlHTTPRequest variable that is set and modify the headers to remove the cookie object that is in there, so in the call to my web service, it does not renew forms authentication in asp.net
I have a problem that I dont know how to catch each XMLHttpRequest wen it is sent, like Firebug can.
View 6 RepliesWhat is the advantage of using a Mex Endpoint over setting
[code]....
I am not able to add the service using Add Service Reference. I am not able to get the WSDL using a browser.
2. If I add the tag <serviceMetadata
httpGetEnabled="true"
and remove Mex Endpoint, I am able to query the wsdl using browser and I am still able to add a refernce using Add Service Reference.
Then, What's the specific use of Mex Endpoint.
I am supposed to create a intranet web application and the question is what technology I will use? is that the ASPX with C # or the Java EE. in any case I want to know the great advantages that I will receive.
View 4 RepliesSince Themes in ASP.NET are used to style elements of your site, I was just wondering why would you use Themes rather than CSS, or is it common practice to use both? If so, when would you opt for one versus the other and why?
Just seems to me like Themes are kind of unnecessary, so I am just looking on clarification if there really is a good reason to use them, or it's just a part of the framework as an alternative(unnecessary) step to styling your site.
I have what should be a relatively simple task that's frankly got me stumped. I've researched it until my brain is fried, and now I'm puntingHere's the scenario:I have an ASPX page (Q2.aspx) that is decorated with the WebService,WebServiceBinding, and ScriptService attributes. That page contains a method, GetAllContacts, that is decorated with the WebMethodattribute and returns a string containing JSON data. (For what it's worth, the pageitself contains no other controls or functionality.)I have an HTML page that contains JavaScript which uses the XmlHttpRequestobject to invoke the GetAllContacts WebMethod on the ASPX page and transformthe JSON data into an HTML table. I have verified that my Web.Config file contains the appropriate protocol handlersfor HttpGet and HttpPut in the WebServices section under System.Web.webServices.
I have verified that my Web.Config file contains the ScriptModule entry under theSystem.webServer.modules section, and that it matches the appropriate documentation.
However, when I view the HTML page in a browser, the following occur:The web request goes through, but the results are for the unprocessed HTML from the ASPX page.The GetAllContacts method is never invoked, as evidenced by setting a breakpoint in its code.The code to invoke the Web service, however, is invoked, and the JavaScript callbackfunction that is invoked upon request completion is properly invoked.
It appears that the JavaScript code is largely set up correctly, but for some reason that is completely escaping me at this point, the HTML page will simply not execute the WebMethod on the ASPX page, and simply returns the page as though it were a plain HTML GET request. Clearly, an HTML document can't be evaluated by JavaScript's eval function, which brings me to my problem. (Also note that the JSON data appears nowhere in the HTML that's returned.)I am, frankly, baffled. I've looked at dozens of Microsoft articles, StackOverflow posts, CodeProject articles, and who knows what else. My code looks like it's okay. But I know better. I'm missing something simple, stupid, and obvious. I just need someone to point it out to me.Below you'll find the ASPX page code and the HTML code, in the hope that they'll shed some light.ASPX Code
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Q2.aspx.cs" Inherits="Satuit.Q2" enablesessionstate="False" %>
<html>
<body>
[code]...
I'm building a web app for my company that will run a query every few seconds against SQL Server, and the data that it returns is which database is restoring and how much % complete it is. I have the query already set up and it works fine.
What I want to do is on my Web Form, have a "div" element that will contain the % complete of a database restore, and have it update every few seconds using the JavaScript timer object:
setInterval(function, interval)
I figure I would need to use XMLHttpRequest to send the request to the web server which will run the SQL query. Am I on the right track? How would I even start to do this?
My SQL query is below:
Use master
Select der.session_id, der.command, der.status, der.percent_complete, *
From sys.dm_exec_requests as der
Where percent_complete > 0
I hate webform that no matter what action is done with a client side page(such as clicking a dropdownlist to only see the Items), it cause a postback&re-rendering of the whole page and all of the page events is raised( page_init,page_load....complete....).
We know that the server side .cs page shoudnt have to go through all the events and many methods(such as "IsPostback",viewstate), in fact,it just have to do only one thing:get data from DB for the dropdownlist and show it to us, other part of the page just doesnt have to change.
We may achieve this effect using Ajax, but the key is I dont wanna raise too many useless event .
seems MVC can handle such a problem, one action of browser side is replied by exactly one method,and time isnot waste by raise event...
Is this the biggest advantage of MVC?
Possible Duplicate:
MVC versus WebForms
What are some of the advantages of using one over the other?
I am new to Entity frameworks-EF. As, EF is built on top of ADO.NET...If so, will there be any performance issue when we use it?Same way MVC also targets Test Driven , rapid application development only ..What speciality does it add for end-users?As per my understanding ASP.Net 2.0 itself is powerful without MVC and/or EF...
View 7 Replies
