(New to DNN)
My DNN module has a column of Input fields built dynamically within Page_Load event (based on a XML file content).
When user enters some data within each input field ("onkeyup" event of each input field) a string (concatenation of all input value strings) is to be sent to the server (asynchronously - not a page postback) for processing. The result (String) from the server is then used to render a segment of the page by setting the "innerHTML" value of the target page elements.

Under an ASPX page the following works fine:-
string cbReference = Page.ClientScript.GetCallbackEventReference(this, "arg", "JSCallback", "context", true);
//The next 2 lines register the javascript function that will call back to the server from a javascript function
string cbScript = string.Format("function UseCallBack(arg, context) {{ {0}; }} ", cbReference);
Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "UseCallBack", cbScript, true);

The same code fails to Register/invoke the Callback event when used within a dnn module (.ASCX) which gets added to a simple ASPX page that uses a simple skin.

Based on my limited research it looks like I have to use
DotNetNuke.UI.Utilities.ClientAPI.GetCallbackEventReference,
DotNetNuke.UI.Utilities.ClientAPI.RegisterClientScriptBlock..etc instead.

Can someone please show me the correct usage of the these two within a DNN module.
Looks like I am not passing the correct parameters to the new methods.
All I am getting is the [object error] for all my attempts with varying parametr list.

You can also refer to the Client API documentation:

For 6.0.1 : http://dotnetnuke.codeplex.com/releases/view/71896#DownloadId=273729
 For 5.x : http://dotnetnuke.codeplex.com/releases/view/63026#DownloadId=220152

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Thank you,
James Campbell
MCP,MCSA,MCSE,Sec +
http://jamesecampbell.blogspot.com

James appreciate it very much. Downloading the documentation.