ExtJS 4 AJAX | What Is ExtJS

ASP.NET MVC4 Stripped

I’ve been ramping up on Microsoft’s latest and greatest ASP.NET MVC4 and while I love the technology, I hate the tight integration into Visual Studio. I could not find a single example that did not require a compilation of a DLL by Visual Studio.

I’m used to my Just in Time compiling, so I went hard to work at ripping out the Visual Studio umbilical cord and was able to produce a (what I think is) much cleaner setup. Most of all, it doesn’t require re-compiling every time, so you don’t need Visual Studio!

I should warn that this doesn’t have the “view” or “model” hookups; just the controller – with the default “Values” example. Since I work with ExtJS it’s mainly the Web API enabled by the controller that I’m after.

Download: MVC4Test (Stripped) (~2 MB)

INSTALLATION INSTRUCTIONS
– Install .NET 4.5 (I used MS Web Platform Installer)
– Make sure IIS application pool runs under .NET 4.0
– Make sure .NET 4 is allowed in IIS (CGI Restrictions)
– Install ASP.NET MVC 4 – I did not use MS Web Platform Installer, as it will also want to install a SQLExpress database; instead I used stand-alone installer (http://www.asp.net/mvc/mvc4)

Rating: 7.0/10 (5 votes cast)

ExtJS4 & ASP.NET MVC3 Dictionary

See my previous example on getting ExtJS4 working with ASP.NET MVC3

Back when I used to work with ASP.NET AJAX Extensions 1.0 (5 year old tech), I used to do the following all the time:

JavaScript

Ext.Ajax.request({
	url: ...
	, jsonData: { data: form.getForm().getValues() }
	...
}); // eo Ajax

ASP.NET AJAX Extensions 1.0

[WebMethod(EnableSession = true)]
public static void MyWebMethod( Dictionary<string,object> data )
{
	...
}

…ASP.NET AJAX Extensions 1.0 handled the conversion of data from JSON to C# Dictionary, which is a pleasure to work with. To my great disappointment, I discovered that ASP.NET MVC3, the latest and greatest, won’t do that for you! I had to find a solution…
Continue reading ExtJS4 & ASP.NET MVC3 Dictionary

Rating: 9.1/10 (7 votes cast)

ASP.NET MVC3 XML & ExtJS4

In this example I will demonstrate how to use an ExtJS4 store to perform an XML data read from an ASP.NET MVC3 controller. First let me say that I wasted a LOT of time reading fake tutorials on these keywords – seems there are a lot of people who can explain the ASP.NET MVC3 side, but not how to actually connect it to an ExtJS4 store using a clean proxy, AND pass parameters to the server. Especially using XML for the return data.

So, let’s say we just want a basic search box – when user types something in and hits Search, we will use an ExtJS4 store and POST to an ASP.NET MVC3 method, passing the search query as a JSON parameter, while returning results in XML. Here’s the basic ExtJS model & store configuration:

// Basic model
Ext.define('MY.model.SearchResult', {
	extend: 'Ext.data.Model',
	fields: ['id','html']
});
 
// Basic store
Ext.create('Ext.data.Store',{
	model: 'MY.model.SearchResult',
	proxy: Ext.create('MY.proxy.MSAjaxProxy', {
		url: '/User/Search',
		reader: { type: 'xml', root: 'matches', record: 'match' }
	}) // eo proxy
}) // eo store

Continue reading ASP.NET MVC3 XML & ExtJS4

Rating: 6.9/10 (9 votes cast)

ASP.NET AJAX & ExtJS 4 Grid (4)

Read Previous Example First!

In this example, we’ll improve our ExtJS 4 model to include an “association” that it will read from XML produced by AJAX call to ASP.NET. Most common association is one to many, for example: your Client can place multiple Orders. An ExtJS 4 data store and model can accommodate this.

The new XML data packet will look like this; notice hiddenAttributes:

&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;matches&gt;
	&lt;match&gt;
		&lt;id&gt;0&lt;/id&gt;
		&lt;name&gt;Number 0&lt;/name&gt;
		&lt;hiddenAttributes&gt;
			&lt;attr&gt;
				&lt;name&gt;hidden1&lt;/name&gt;
				&lt;value&gt;val1&lt;/value&gt;
			&lt;/attr&gt;
			&lt;attr&gt;
				&lt;name&gt;hidden2&lt;/name&gt;
				&lt;value&gt;val2&lt;/value&gt;
			&lt;/attr&gt;
		&lt;/hiddenAttributes&gt;
	&lt;/match&gt;
	&lt;match&gt;&lt;id&gt;1&lt;/id&gt;&lt;name&gt;Number 1&lt;/name&gt;&lt;/match&gt;
	...
&lt;/matches&gt;

Continue reading ASP.NET AJAX & ExtJS 4 Grid (4)

Rating: 6.8/10 (5 votes cast)

ASP.NET AJAX & ExtJS 4 Grid (3)

Read Previous Example First!

In this example, we’ll be returning additional data to our ExtJS4 data store, which is passed from ASP.NET over AJAX in XML format. It’s common to show grid row count in the form title, as well as something else in the header, such as final SQL or LDAP query used by your ASP.NET AJAX script (WebMethod).

Combine this with ExtJS4 buffered grid’s ability to only render 50 HTML rows with infinite scrolling, this makes the stock ExtJS4 gridpanel an extremely powerful application in its own right, very good at running large data queries. On a decent computer with decent Internet connection this will smoke the traditional buffered grid, which ajax back on every scroll.

Continue reading ASP.NET AJAX & ExtJS 4 Grid (3)

Rating: 8.3/10 (6 votes cast)