.NET Framework 3.5 Enhancements Training Kit (for VS2008 SP1 and Fx 3.5 SP1)

The .NET Framework 3.5 Enhancements Training Kit includes presentations, hands-on labs, demos, and event materials. This content is designed to help you learn how to utilize the .NET 3.5 Enhancement features including: ASP.NET MVC, ASP.NET Dynamic Data, ASP.NET AJAX History, ASP.NET Routing, ADO.NET Data Services, ADO.NET Entity Framework, WCF 3.5 SP1, and the .NET Framework Client Profile.

You can find it at http://www.microsoft.com/downloads/details.aspx?FamilyID=355c80e9-fde0-4812-98b5-8a03f5874e96&displaylang=en

Ken Zheng

ADO .NET Entity (VS 2008 SP1)

After installed SP1 for visual studio 2008. I started playing the ADO .NET Entity. To create a entity class is very simple.
1. Add New Item
2. Select ADO .NET Entity Data Model
3. I called NorthwindEF, then follow the wizard. In this example, I only add Product and Category Tables from Nothwind database

Visual Studio will generate a NorthWindEF.edmx and code behind file

A simple example is

            using (NorthwindEFEntities context = new NorthwindEFEntities())
            {
                var query = from p in context.Products where p.ProductName.Contains("b") && p.Discontinued == false select p;

                Console.WriteLine("result 1");
                foreach (var p in query)
                {
                    p.CategoriesReference.Load();
                    Console.WriteLine("    {0}",p.Categories.CategoryName);

                }
                var categories = from c in context.Categories
                                select c;

                Console.WriteLine();
                Console.WriteLine("result 2");

                foreach (Categories c in categories)
                    Console.WriteLine("    {0}", c.CategoryName);

                var query2 =
                    (from p in context.Products select p).ToList();

                //Add Product
                Console.WriteLine("Add a product");
                Products _product = new Products();

                _product.ProductName = "Pizza";
                _product.Categories = categories.First();
                _product.Discontinued = false;

                context.AddObject("Products", _product);

                context.SaveChanges();

                Console.WriteLine("New ID {0}", _product.ProductID);

                //Update Product
                _product.SupplierID = 1;

                context.SaveChanges();

                //Delete Product

                var del_prod = query2.LastOrDefault();

                context.DeleteObject( del_prod);
                context.SaveChanges();
                Console.WriteLine("Completed!");
            }

Be careful with p.CategoriesReference.Load(). If you don’t call this method. The Category object will be null

Advanced JavaScipt

Today, I learned some useful javascript way. Thanks for Damian for his IPhone Speed http://iphonespeedcheck.com

First you can write your script like below to use variable

var $ = function(selector) {
return document.querySelector(selector);
}

var $debug = function(msg)
{
if(window.console) {
window.console.log(msg);
}
else {
alert(msg);
}
}

var $dispatch = function(code, delay) {
return window.setTimeout(code, delay);
}

var $repeat = function(code, delay) {
return window.setInterval(code, delay);
}

var $cancel = function(id) {
window.clearInterval(id);
window.clearTimeout(id);
}

var $create = function(tag) {
return document.createElement(tag);
}

var $createText = function(text) {
return document.createTextNode(text);
}

so you can call the function by
$debug(“Running latency test…”);
you can use jquery to get element using particular css id
$(“#blackOut”).style.left = 0;

Useful Windows ShortCut

• CTRL+SHIFT+ESC (Open Task Manager)
• Windows Logo+E (Open My Computer)
• CTRL+ESC (Display the Start menu)
• Windows Logo+D (Display the desktop)
• Windows Logo+R (Open the Run dialog box)
• CTRL+TAB (Move forward through the tabs)
• ALT+TAB (Switch between the open items)

Button1 Clicked Raised Button2 postback

I had one problem that need to be addressed is when Button1 clicked to call Button2 postback.
You can achieve it by writing a Javascript function

<SCRIPT LANGUAGE="JavaScript1.2" TYPE="text/javascript">
<!--
function doingThings()
{
// post back to raise the button's click event
<%= ClientScript.GetPostBackEventReference(Button2, string.Empty) %>
<asp:Button ID="Button1" runat="server" Text="Button1" OnClientClick="doingThings();return false"/>
<asp:Button ID="Button2" runat="server" Text="Button2" />
}
//-->
</SCRIPT>

This code will cancel the Button1 Click event and the postback is caused by Button2

And below function will return the Button which raised postback. You will see it is Button2

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
    If Page.IsPostBack Then
            Label4.Text = DirectCast(GetPostBackControl(Me.Page), Button).ID
    End If
 End Sub

    Public Shared Function GetPostBackControl(ByVal page As System.Web.UI.Page) As System.Web.UI.Control
        Dim control As Control = Nothing
        Dim ctrlname As String = page.Request.Params("__EVENTTARGET")
        If ctrlname IsNot Nothing AndAlso ctrlname <> [String].Empty Then
            control = page.FindControl(ctrlname)
        Else
            ' if __EVENTTARGET is null, the control is a button type and we need to
            ' iterate over the form collection to find it
            Dim ctrlStr As String = [String].Empty
            Dim c As Control = Nothing
            For Each ctl As String In page.Request.Form
                If ctl Is Nothing Then Continue For
                ' handle ImageButton controls ...
                If ctl.EndsWith(".x") OrElse ctl.EndsWith(".y") Then
                    ctrlStr = ctl.Substring(0, ctl.Length - 2)
                    c = page.FindControl(ctrlStr)
                Else
                    c = page.FindControl(ctl)
                End If
                If TypeOf c Is System.Web.UI.WebControls.Button OrElse TypeOf c Is System.Web.UI.WebControls.ImageButton Then
                    control = c
                    Exit For
                End If
            Next
        End If
        Return control
    End Function

WCF Security Guide

The official 1.0 release of the WCF security guide. Handy reference to have.
http://www.codeplex.com/WCFSecurityGuide/Release/ProjectReleases.aspx?ReleaseId=15892

Asychronized Callback in .Net 2.0

I just want to put a link the source code so I can reference in the future

http://cid-5e2b95139edcd772.skydrive.live.com/browse.aspx/CodeExample

Australian Teched 2008 Session Listing

You can find the current session list at https://aunz.msteched.com/au/public/sessions.aspx

Execute a SQL Script using VB .NET

command1.ExecuteNonQuery(File.OpenText(“C:\Test.sql”).ReadToEnd());

Regular Expression Search in Visual Studio

I use “SetAttribute\(.*\Date\*.ToString” or SetAttribute\(.*\Date.ToString, and check Use Regular Expression in Find box