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ASP.NET Podcast

The ASP.NET Podcast features, technical talks, interviews, news, reviews, and Wallyisms. Wallace B. (Wally) McClure, David Penton, and Paul Glavich are your hosts. We talk about ASP.NET, AJAX, Performance, Databases, WCF, Silverlight, Cloud Computing, Windows Azure, and whatever else we decide to talk about.

ASP.NET Podcast Show #92 - Silverlight and Managed JavaScript

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Show Notes:

  • Silverlight .NET 1.1 Alpha.
  • Debugging.
  • Running in VS.NET Orcas Beta1
  • Managed JavaScript.

Page.xaml source:

<Canvas x:Name="root"
  xmlns="http://schemas.microsoft.com/client/2007"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  x:Class="SampleApplication.EventHandlingCanvas;assembly=ClientBin/SilverlightProject2.dll"
  Loaded="Page_Loaded"
        >
  <Canvas Width="100" Height="30" Background="Gray" x:Name="Button1">

  <TextBlock>Click me</TextBlock>
  </Canvas>
  <Canvas x:Name="Button2" Canvas.Top="50" Width="100" Height="30" Background="Gray">
    <TextBlock>Click me too</TextBlock>
  </Canvas>
</Canvas>

Page.xaml.cs source:

//------------------------------------------------------------------------------
// <copyright file="default.xaml.cs" company="Microsoft">
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// </copyright>
//------------------------------------------------------------------------------

namespace SampleApplication
{
    using System;
    using System.Windows;
    using System.Windows.Input;
    using System.Windows.Media;
    using System.Windows.Controls;
    using System.Windows.Shapes;

    public partial class EventHandlingCanvas : Canvas
    {
        public void Page_Loaded(object o, EventArgs e)
        {
            // Required to initialize variables
            InitializeComponent();
        }
        public EventHandlingCanvas()
        {
            this.Loaded += new EventHandler(EventHandlingCanvas_Loaded);
        }
        void EventHandlingCanvas_Loaded(object sender, EventArgs e)
        {
            Button2.MouseLeftButtonUp += new MouseEventHandler(OnClick);
            Button1.MouseLeftButtonUp += new MouseEventHandler(OnClick);
            Button1.MouseEnter += new MouseEventHandler(Button2_MouseEnter);
            Button1.MouseLeave += new EventHandler(Button2_MouseLeave);
            Button2.MouseEnter += new MouseEventHandler(Button2_MouseEnter);
            Button2.MouseLeave += new EventHandler(Button2_MouseLeave);
        }

        void Button2_MouseLeave(object sender, EventArgs e)
        {
            Canvas cc = sender as Canvas;
            SolidColorBrush sb = new SolidColorBrush();
            sb.Color = Colors.Red;
            cc.Background = sb;
            TextBlock tb = cc.Children[0] as TextBlock;
            tb.Text = "Mouse Left";
            Button2.Cursor = Cursors.Default;
        }
        void OnClick(object sender, MouseEventArgs e)
        {
            Canvas cc = sender as Canvas;
            SolidColorBrush sb = new SolidColorBrush();
            sb.Color = Colors.Red;
            cc.Background = sb;
            TextBlock tb = cc.Children[0] as TextBlock;
            if (tb.Text != "Clicked...")
                tb.Text = "Clicked...";
            else
                tb.Text = "Click Me.";
        }
        void Button2_MouseEnter(object sender, MouseEventArgs e)
        {
            Canvas cc = sender as Canvas;
            SolidColorBrush sb = new SolidColorBrush();
            sb.Color = Colors.Red;
            cc.Background = sb;
            TextBlock tb = cc.Children[0] as TextBlock;
            tb.Text = "Mouse Entered";
            Button2.Cursor = Cursors.Hand;
        }
    }
}

 

Managed JavaScript / JScript source code examples

Default.aspx source code:

<%@ Page Language="ManagedJScript" CodeFile="Default.aspx.jsx" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>JScript Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click"/><br />
        <asp:Label ID="Label1" runat="server"
            Text=""></asp:Label>
    </div>
    </form>
</body>
</html>

Default.aspx.jsx source code:

Import("System.Data");
Import("System.Data.SqlClient");

function Page_Load(sender, e){

}

function Button1_Click(sender, e)
{
    Label1.Text = "Clicked.";
}

Published Wednesday, May 16, 2007 8:53 PM by admin
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