Gonna make a page: koumei.co/ol cool !

Foreword:

Anonymous’ ID seems to be unveiled on this update. Well, the anonymous sends Koumei a photo image, Koumei is shocked after he knows who anonymous really is.

Summary:

2D context API is quite useful and interesting. The HTML5 canvas is absolutely fantastic!

Pre-requisition:

Firefox 3.6+ or Google Chrome. Internet Explorer 8 does not support

Koumei’s experimental page is available here: http://koumei.net/html5.html

Nothing much currently. I am quite interested in creating the gradient background and rounded corner.

This page will be kept updating.

Thanks to Howie from states who provides me a shelter at this moment. koumei.net is homeless, desperate and depressed last night, but because of his kindly help that make me home again. Now let us say hello to koumei.net again on HelloVPS (HelloVPS.com).

hellovps

Champagne Flutes with Heart and Crystal Drop - Set of 2

Don’t know what to buy for your friend’s wedding party? Here is an ideal gift for your friend! Brand new and looks gorgeous! Can’t afford to lose the chance. Only sale on Koumei.net

Flat rate shipping fee, only AU$10

Given an extension on HtmlHelper: this extension will generate a list box in view based on the collection “cakes”. (Because I like cake, so I use dessert object as example

public static MvcHtmlString MyDropDownList(this HtmlHelper target, string controlName, IQueryable<Cake> cakes, object htmlAttr)
{
if (cakes== null)
return MvcHtmlString.Empty;
var cakesList = new SelectList(cakes, “Id”, “CakesName”);
return target.ListBox(controlName, cakesList, htmlAttr);
}

It is okay, but the main issue is if the when I specify the Model data on control name, it IS SUPPOSED to generate the list box with the data which retrieved from database are selected. Yes.  IT IS SUPPOSED TO BE. But, unfortunately, MVC fail to automatically bind data for us…  The data “cakesList” is showing properly, but with no preselect options. In most of the business logic, it’s not gonna work, because it is no point for user to re-select the options every time before save the data.

In this case, MVC is not gonna auto-bind the data for us, we just need to figure out another way to display and manipulate the data properly. So we will change something on the extension, view and the controller:

1. On the view, don’t specify the name to model’s name, For example, the data which will be weaved to list box is CakeViewData.CakeList, the data related to database is CakeViewData.Dessert.Cakes. Normally, we will use the extension to weave the data:

<%=Html.MyDropDownList(“Dessert.Cakes”, Model.CakeList, new { @class = “multiselect”, size = 5 })%>

Since MVC is not gonna take care of the data binding, The name (on parameter controlName) should and NEED to use other name instead. Change “Cakes” to any other name, for example, change to “MyCakes”:

<%=Html.MyDropDownList(“Dessert.MyCakes”, Model.CakeList, new { @class = “multiselect”, size = 5 })%>

2. Extension is changed to:

public static MvcHtmlString MyListBoxWithSelectedList(this HtmlHelper target, string name, IQueryable<Cake> cakes, List<string> selected, object htmlAttr)
{
if (interests == null)
return MvcHtmlString.Empty;
var cakeList = new MultiSelectList(cakes, “Id”, “CakeName”, selected);
return target.ListBox(name, cakeList, htmlAttr);
}

I just add a parameter “List<string> selected” in the extension which will be used in MultiSelectList object that can be bind to the the items to be selected.

3. In controller, before saving the data, need to use FormCollection or Request["Dessert.MyCakes"] to obtain the data “MyCakes” manually.

string myCakes = Request["Dessert.MyCakes"];
Dessert dessert = new Dessert{Cake = myCakes};

It might not be a bug actually. And in this example you can feel how flexibility that MVC can bring you: the way to manipulate the model or data varies! 

Happy programming in MVC 2!

Croissant and Vanilla Slices

When the creamy egg custards leaking from the croissant after first bite, can’t help yourself falling in love with the taste anymore.

And I found some badges are fitted my bag very well. So I just pin them on my bag, looks more smart, doesn’t it?

Have a close up:

I got 2 souvenirs, such as t-shirt, caps, but all are related to Microsoft stuff. You want to get the t-shirt? well, need to make some efforts. Everyone who attends the meeting will get a magic cube from the host, and need to fix the cube to a designated image. After all, once cubes are fixed, the host sorts them out and put them in a frame, to shape a IE icon:

The Frame of Magic cubes,Everyone is involved

I think the most useful sessions are about how jQuery works peacefully with ASP.NET and VS.NET 2010 new features, and one interesting session talking about the future data representation, and introduce Pivot. Microsoft considers the cooperation with jQuery is a giant step forward, and shows its ambitions to open source community. Microsoft starts to contribute to open source community and make a lot of effort towards it, look forward to seeing its powerful tool released in months to come.

Frankly Speaking - Talk Show in REMIX10

One thing somehow a little bit disappointed me is on this event, Microsoft doesn’t show any thing about HTML5 and CSS3, I think because Microsoft more focuses on sliverlight technology?

When walked into the town, there are some interesting stuffs. Good to go into town, but not in museum. I recon.