narmatha balasundaram - Developer IT

MS Charting controls

- by Narmatha Balasundaram

Beginning to use MS Charting controls in our website. Are they good to work with? Are there any pitfalls to watch out for? Any other better charting controls you guys have some across

JSON - msg.d is undefined error

Hi - Webmethod returns an array of objects - something like this {"d": [[{"Amount":100,"Name":"StackOverflow"}, {"Amount":200,"Name":"Badges"}, {"Amount":300,"Name":"Questions"}]]} On the client-side, when the JSON is referenced using msg.d, I get a msg.d is undefined error. I am using jQuery JavaScript Library v1.4.2 How do I access the elements in the array of objects? Adding more findings, code and questions: I don't see __type in the JSON object that is returned. Does that mean that the object sent from the server is not JSON formatted? When the __type is not a part of the response, I will not be able to use msg.d? (msg.d is undefined) Some more: 1. I can access the elements from client side using msg[0][0].Amount - How can I specifically JSON format my return object (from the server)

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Microsoft Charts and AJAX

- by Narmatha Balasundaram

The data that's required for the charts to be drawn comes from an AJAX call (PageMethod call) and the chart needs to be re/drawn after the PageMethod call is completed. Is it possible to redraw the MS chart from JS??

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Communication between Page and User Controls

- by Narmatha Balasundaram

I have a main page that has multiple user controls on it. All the user controls have static text and some data to be retrieved from the DB. The aysnchronous DB call is clubbed at the page level and one call is made to avoid multiple calls (in the different user controls) to get the same data. I want the page and user controls to load initially with the static text and later refresh the contents obtained from the server. To sum it all up, Page Loads = Asyn calls fired on page load = Data received back from the server (XML/text/whatever) = User controls to load with this data using AJAX. What methods do I have to let the user controls know that I have the data from the server and they need to update with this data?

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When do we need to use [Browsable(true)] ?

- by Narmatha Balasundaram

The title is pretty much my question

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Desiging a AJAX website

- by Narmatha Balasundaram

What are the things to consider and watch out for when designing a website with AJAX? Must take care of conditions, say timeouts, error handling, for instance? Best practices? What parameters to take care of while designing and coding?

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Returning a collection of objects from a webmethod

- by Narmatha Balasundaram

How do I return a collection of objects from a webmethod? And can this collection of objects be of different types - say of these 3 classes, private class ClassA { int A1; int A2; } private class ClassB { int B1; } private class ClassC { int C1; } ClassA objA = new ClassA(...); ClassB objB = new ClassB(...); ClassC objC = new ClassC(...); How can I return the objects, objA, objB and objC from a method?

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Trigger user control post back from client side

- by Narmatha Balasundaram

Can a post back to the user control be triggered from javascript (on the client side) without updatepanels? What I am trying to achieve is this Initially the page and the user control are loaded with default values The parent pages makes a PageMethod request When the data is available (from the PageMethod request), the user control has to be reloaded to update with the new values

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__dopostback for partial updates

- by Narmatha Balasundaram

Can a __doPostBack() be used for partial updates in pages where I don't have an updatepanel?

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Loop through all the user controls on a page

- by Narmatha Balasundaram

Want to loop through all the user controls that exist on the page and get their IDs. How do I do it?

Developer IT