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


Post New Web Links

Getting data out of objects in a JSON response

Posted By:      Posted Date: September 05, 2010    Points: 0   Category :ASP.Net
 
I'm working on an MVC2 site that needs to update the values of a select list based on the value selected by a user in another list. This is the response I'm getting from my controller's JSON action: [{"Selected":false,"Text":"Client1Group1","Value":null},{"Selected":false,"Text":"Client1Group2","Value":null}] The problem is that the data object my function gets back is a collection of generic objects. When the following script runs I get two alerts, but instead of getting the Text value from my objects I get "undefined".var clients = $("#properties_ClientList");var groups = document.getElementById("properties_GroupList");//User selects a client nameclients.change(function() {    //Clear group SelectList    $('#properties_GroupList option').each(function(i, option){ $(option).remove(); });    //Repopulate group SelectList    $.getJSON("<%=Url.Content("~/Admin/GetGroupSelectListForReportEditViewAsJsonResult")%>", { clientId: clients.val() },        function(data) {            $.each(data, function(){                


View Complete Post


More Related Resource Links

WCF Data Service to JSON example? v4

  

I would like to take WCF Data Service and produce JSON output to consume on various mobile apps.

Can anyone give me a how-to on the JSON part?  I.e., what is different than normal XML outut?


Thanks.

 


Cutting Edge: Pros and Cons of Data Transfer Objects

  

After a brief refresher on procedural and object based patterns for organizing the business logic layer, the author focuses on data transfer objects and the impact they have on the development of the software project.

Dino Esposito

MSDN Magazine August 2009


Data Points: SQL Server Management Objects

  

SQL Server Management Objects offer developers a robust toolset for backing up and restoring databases, and issuing DDL commands, as John Papa explains.

John Papa

MSDN Magazine June 2007


Data Points: Data Bound Applications with ADO.NET and Custom Objects

  

In this column see how to bind a custom list of business entities using the binding tools in the .NET Framework 2.0.

John Papa

MSDN Magazine February 2007


Data Points: Creating Audit Tables, Invoking COM Objects, and More

  

Dealing with error handling between T-SQL and a calling application, evaluating when a field's value has changed, and creating auditing tables in SQL ServerT are all common issues that developers must tackle.

John Papa

MSDN Magazine April 2004


Collaboration Data Objects: Send Microsoft Exchange Appointment Reminders to Your Pager Using CDO

  

Besides your typical e-mail services, Microsoft Exchange also provides the service infrastructure you need to build extensible knowledge and workflow management systems. Understanding Collaboration Data Objects (CDO) is the key to accessing these Exchange services for your own programs. With CDO you can automate tedious tasks and integrate information such as e-mail, calendars, and contacts with almost any application. This article explains how CDO enables you to access Exchange services, then walks you through a sample application that reads calendar events from an Exchange server and sends pager reminders to your users.

Sean McCormick

MSDN Magazine June 2000


Writing Data to database with jQuery Forms, ASMX Webservice, & JSON - help!

  

Hi, 

Can someone point me in the right direction on how to submit data from a jQuery form to a ASMX webservice? I have gotten everything on the form ready to be submitted to the database and now I am stuck on how to send it over using $.ajax(). Everything I have read tells me how to get data from a webservice and display it with jQuery, but not the other direction nor how to access the json data within the within the webservice service(similar to a Request.Form approach with ASP.NET forms).

In other words: 

1. What do I need to do to my webservice to make sure it can receive data from the jQuery form. 

2. What do I need to do in jQuery to receive an acknowledgement the save on the server side was successful. 

I can explain more if need be, but if there is a comprehensive tutorial on not only reading, but also WRITING data with jQuery, JSON, etc. I would love to get pointed in that direction. 


Video: Consuming SharePoint 2010 Objects and Data in Silverlight Applications

  
This video provides an overview of how to build Silverlight applications that access SharePoint data. (Length: 3:50)

IE 8 partially cut of my JSON data return from WCF service

  
Hi All, I am not so sure here is the right place to post my issue. I am using ExtJS treepanel and ajax call to wcf webservice and return JSON array. My service return array. If array count is less than 2, then IE partially cut of my JSON data return from WCF service. But FireFox is working fine with same JSON format string. Very interesting thing is that I try to debug with Fildder. so I have to put "." dot in my url "http://localhost{.}:1234/ then It is working fine.   I am testing with IE8. Here is the JSON format return from FF and FireBug. {"result":[{"href":"..\/EMP\/EmployeeSearch.aspx","iconCls":"","id":"8c362443-7bb3-427e-910c-87b391c6abf5","leaf":true,"text":"Employees"}]} Here is the corrupted JSON string retrun from IE using developer tool. {"result":[{"href":"..\/EMP\/E" [OperationContract] [WebInvoke(Method = "POST", UriTemplate = "GetSiteMap", BodyStyle = WebMessageBodyStyle.Wrapped, RequestFormat = WebMessageFormat.Json, ResponseFormat = WebMessageFormat.Json)] [return: MessageParameter(Name = "result")] List<TreeView> GetSiteMap(string node);

Posting form data and receiving a response

  
Hey everyone,I have an application that needs to post data to a url on the web and then receive an xml response.  I have an HTML form (provided by vendor) that posts the data correctly, however when clicking the submit button the page is redirected to the post url and the xml is displayed in the browser.  I need to do this on a postback within an existing asp.net project.  Basically, the user will fill out the form, the form data will post to the url, the xml response will be received, and the appropriate values will be displayed on the screen. I've found a bunch of examples for doing this but I just can't seem to get my head around it.  Can anyone point me in the right direction or explain how I should go about this?  Thanks for your help!Will

Web Service and JSON input data

  
Hy, I'm try to build a web service who can get in input a JSON string. My web method is: [WebMethod(Description = "Edit Entity")][System.Web.Script.Services.ScriptMethod(ResponseFormat = System.Web.Script.Services.ResponseFormat.Json)]public string ManageEntity(string _DataIn){ // System.Diagnostics.Debug.WriteLine(_DataIn);            return "{\"Result\":\"OK\"}";} When I try posting some data to the webservice I get the error "No parameterless constructor defined for type of 'System.String'". Why the system try to deserialize my JSON string? Is possible to simple retrieve the string? Thanks Lorenzo SonciniLorenzo Soncini

consuming wcf Data service in different format in client - SOAP (including a WDSL), XML, JSON, etc.

  
Hi I have implemented wcf data service with entity framework with the following steps, i want to know i can we consume this WCF Data service in different format like (SOAP, JSON, XML, PLIST). it will be helpfull if some one help on this. - Created web application with VS2010 and added edmx file and selected tables,views and SPs that i want to use - imported SP with complex type by using function import. - Created WcfDataservice (.svc File). - in SVC File i have added [webget] method as follows.         [WebGet]        public List<GetSearchResultWithComplextype_Result> GetSearchResultComplextype(string email, string Title, string Color)        {            Entities db = new Entities();            var query = db.GetSearchResultWithComplextype(email, Title, Color);            List<GetSearchResultWithComplextype_Result> caseList = query.ToList<GetSearchResultWithComplextype_Result>();            return caseList;        } - created one more client application and added service reference. here i want to cons

consuming wcf Data service in different format in client - SOAP (including a WDSL), XML, JSON, etc.

  
Hi  I have implemented wcf data service with entity framework with the following steps, i want to know i can we consume this WCF Data service in different format like (SOAP, JSON, XML, PLIST). it will be helpfull if some one help on this. - Created web application with VS2010 and added edmx file and selected tables,views and SPs that i want to use - imported SP with complex type by using function import. - Created WcfDataservice (.svc File). - in SVC File i have added [webget] method as follows.         [WebGet]         public List<GetSearchResultWithComplextype_Result> GetSearchResultComplextype(string email, string Title, string Color)         {             Entities db = new Entities();             var query = db.GetSearchResultWithComplextype(email, Title, Color);             List<GetSearchResultWithComplextype_Result> caseList = query.ToList<GetSearchResultWithComplextype_Result>();             return caseList;         } - created one more client application and added service reference. here i wan

Writing image binary data to the Response

  

Hi there,

I've created 2 web user controls. A = User control that displays an image, and B is the user control that hosts A. I'm trying to stream an array of bytes to A, but it seems like the Response.BinaryWrite method completely overwrites any heirachial controls (I can't see any of B's other controls besides the image).

How do I get A to just display the image from the byte stream? It doesn't come from a database, it's an image I created on the fly.

A's code:

        public void UpdateImage(byte[] imgbytes)
        {
            Response.ContentType = "image/jpg";
            Response.BinaryWrite(imgbytes);
            Response.End();
        }


Thanks!



class contains non-dependency-property data members that are DependencyObject objects, you must also

  

I was reading the article Freezable Objects Overviewand came acrosee the statement

"If  your class contains non-dependency-property data members that are DependencyObject objects, you must also call the OnFreezablePropertyChanged method each time you change on of their values, even if you're setting the member to null. "

I quite do not understand the part about non-dependency-property data members that are DependencyObject objects. Can some one explain exactly what this means? If a data member is derived from the DependencyObject  class how then can the data member be a non dependency property?

I am also trying to locate some source code / project that overrides the OnFreezablePropertyChanged method, and have yet to find any on the interenet.

If anyone know whe

Categories: 
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