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ASP.NET Podcast

The ASP.NET Podcast features, technical talks, interviews, news, reviews, and Wallyisms. Wallace B. (Wally) McClure and Paul Glavich are your hosts.

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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