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稳扎稳打Silverlight(29) - 2.0Tip/Trick之cookie,自定义字体,为程序传递参数,自定义鼠标右键,程序常用配置参数
作者： webabcd
介绍
Silverlight 2.0 提示和技巧系列
cookie - 通过 JavaScript *** 作 cookie 自定义字体 - 在程序中使用自定字体 为程序传递参数 - 为 Silverlight 程序传递初始化参数 自定义鼠标右键 - 响应并处理自定义的鼠标右键事件 程序常用配置参数 - object 标记的常用参数，以及对应的 Silverlight 控件的常用属性
在线DEMO
http://www.cnblogs.com/webabcd/archive/2008/10/09/1307486.html
示例
1、 *** 作 cookie 的演示
cookie.xaml
< UserControl x:Class ="Silverlight20.Tip.cookie"
xmlns ="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x ="http://schemas.microsoft.com/winfx/2006/xaml" >
< StackPanel HorizontalAlignment ="left" margin ="5" >
< StackPanel OrIEntation ="Horizontal" margin ="5" >
< TextBlock Text ="cookie-key: " />
< TextBox x:name ="txtKey" />
</ StackPanel >
< StackPanel OrIEntation ="Horizontal" margin ="5" >
< TextBlock Text ="cookie-value: " />
< TextBox x:name ="txtValue" />
</ StackPanel >
< StackPanel OrIEntation ="Horizontal" margin ="5" >
< button x:name ="btnsetcookie" Content ="设置cookie" Click ="btnsetcookie_Click" />
< button x:name ="btnGetcookie" Content ="获取cookie" Click ="btnGetcookie_Click" />
< button x:name ="btnDeletecookie" Content ="清除cookie" Click ="btnDeletecookie_Click" />
</ StackPanel >
< TextBox x:name ="txtResult" margin ="5" />
</ StackPanel >
</ UserControl >
cookie.xaml.cs
/*
关于使用 JavaScript *** 作 cookie 参看
http://msdn.microsoft.com/en-us/library/ms533693(VS.85).aspx
*/
using System;
using System.Collections.Generic;
using System.linq;
using System.Net;
using System.windows;
using System.windows.Controls;
using System.windows.documents;
using System.windows.input;
using System.windows.Media;
using System.windows.Media.Animation;
using System.windows.Shapes;
using System.windows.browser;
using System.Text.RegularExpressions;
namespace Silverlight20.Tip
{
public partial class cookie : UserControl
{
public cookie()
{
InitializeComponent();
}
/// <summary>
/// 设置 cookie
/// </summary>
private voID btnsetcookie_Click(object sender, RoutedEventArgs e)
{
if (txtKey.Text.Trim() != "" && txtValue.Text.Trim() != "")
{
string expire = DateTime.Now.AddDays(1).ToString("R"); // RFC1123Pattern 日期格式
string cookie = string.Format("{0}={1};expires={2}",
txtKey.Text.Trim(),
txtValue.Text.Trim(),
expire);
// 通过 JavaScript 设置 cookie
// 如下语句等于在 JavaScript 中给 document.cookie 赋值
HTMLPage.document.SetProperty("cookie", cookie);
}
}
/// <summary>
/// 获取 cookie
/// </summary>
private voID btnGetcookie_Click(object sender, RoutedEventArgs e)
{
txtResult.Text = "";
// 通过 JavaScript 获取 cookie
// HTMLPage.document.cookies 就是 JavaScript 中的 document.cookie
string[] cookies = Regex.Split(HTMLPage.document.cookies, "; ");
foreach (var cookie in cookies)
{
string[] keyvalue = cookie.Split('=');
if (keyvalue.Length == 2)
{
txtResult.Text += keyvalue[0] + " : " + keyvalue[1];
txtResult.Text += "\n";
}
}
}
/// <summary>
/// 删除 cookie
/// </summary>
private voID btnDeletecookie_Click(object sender, RoutedEventArgs e)
{
string[] cookies = Regex.Split(HTMLPage.document.cookies, "; ");
foreach (var cookie in cookies)
{
string[] keyvalue = cookie.Split('=');
if (keyvalue.Length == 2)
{
HTMLPage.document.SetProperty("cookie", keyvalue[0] + "=;" + DateTime.Now.AddDays(-1).ToString("R"));
}
}
}
}
}
2、演示如何使用自定义字体
以使用华文行楷字体为例，先将字体文件做为资源型文件添加到项目里
CustomFont.xaml
< UserControl x:Class ="Silverlight20.Tip.CustomFont"
xmlns ="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x ="http://schemas.microsoft.com/winfx/2006/xaml" >
< StackPanel HorizontalAlignment ="left" margin ="5" >
< TextBlock x:name ="lblMsg" Text ="自定义字体" FontSize ="50" />
<!-- 以声明的方式使用自定义字体 -->
<!-- FontFamily - 字体源地址#字体名称 -->
< TextBlock Text ="自定义字体" FontSize ="50" FontFamily ="/Silverlight20;component/Resource/STXINGKA.TTF#STXingkai" />
<!--
资源型文件 - [/程序集名;component/路径]
内容型文件 - [/路径]
-->
</ StackPanel >
</ UserControl >
CustomFont.xaml.cs
using System;
using System.Collections.Generic;
using System.linq;
using System.Net;
using System.windows;
using System.windows.Controls;
using System.windows.documents;
using System.windows.input;
using System.windows.Media;
using System.windows.Media.Animation;
using System.windows.Shapes;
using System.windows.Resources;
namespace Silverlight20.Tip
{
public partial class CustomFont : UserControl
{
public CustomFont()
{
InitializeComponent();
this.Loaded += new RoutedEventHandler(CustomFont_Loaded);
}
voID CustomFont_Loaded(object sender, RoutedEventArgs e)
{
// 以编码的方式使用自定义字体
// 以华文行楷为例
StreamResourceInfo sri = App.GetResourceStream(
new Uri("/Silverlight20;component/Resource/STXINGKA.TTF", UriKind.relative));
// 设置需要显示的字体源
lblMsg.FontSource = new FontSource(sri.Stream);
// 设置需要显示的字体名称
// STXingkai - 华文行楷的字体名称
lblMsg.FontFamily = new FontFamily("STXingkai");
}
}
}
3、演示如何为 Silverlight 程序传递初始化参数
为 object 标记配置参数：initParams,多个参数用“,”分隔
< param name ="initParams" value ="key1=value1,key2=value2" /> 或者为 Silverlight 控件配置属性：InitParameters,255); orphans:2; wIDows:2; max-wIDth:900px"> < asp:Silverlight ID ="Xaml1" runat ="server" InitParameters ="key1=value1,key2=value2" />
App.xaml.cs
private voID Application_Startup( object sender, StartupEventArgs e)
{
// e.InitParams - 获取传递给 Silverlight插件 的参数
foreach (var param in e.InitParams)
{
// 将参数保存到应用程序级别的资源内
Resources.Add(param.Key, param.Value);
}
this.RootVisual = new Page();
}
InitParams.xaml
< UserControl x:Class ="Silverlight20.Tip.InitParams"
xmlns ="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x ="http://schemas.microsoft.com/winfx/2006/xaml" >
< StackPanel HorizontalAlignment ="left" margin ="5" >
< TextBlock x:name ="lblMsg" />
<!-- 以声明的方式读取应用程序级别的资源 -->
< TextBlock Text =" @H_403_2144@{StaticResource key2} " />
</ StackPanel >
</ UserControl >
InitParams.xaml.cs
using System;
using System.Collections.Generic;
using System.linq;
using System.Net;
using System.windows;
using System.windows.Controls;
using System.windows.documents;
using System.windows.input;
using System.windows.Media;
using System.windows.Media.Animation;
using System.windows.Shapes;
namespace Silverlight20.Tip
{
public partial class InitParams : UserControl
{
public InitParams()
{
InitializeComponent();
this.Loaded += new RoutedEventHandler(InitParams_Loaded);
}
voID InitParams_Loaded(object sender, RoutedEventArgs e)
{
// 以编码的方式读取应用程序级别的资源
lblMsg.Text += App.Current.Resources["key1"];
}
}
}
4、演示如何响应并处理鼠标右键事件
为 Silverlight 插件配置参数，windowless="true"
< param name ="windowless" value ="true" />
RightClick.xaml
< UserControl x:Class ="Silverlight20.Tip.RightClick"
xmlns ="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x ="http://schemas.microsoft.com/winfx/2006/xaml" >
< border borderBrush ="Black" borderThickness ="4" Background ="Bisque" WIDth ="100" HorizontalAlignment ="left" >
<!-- 右键菜单的内容 -->
< StackPanel >
< TextBlock margin ="5" > 我是右键菜单1 </ TextBlock >
< TextBlock margin ="5" > 我是右键菜单2 </ TextBlock >
< TextBlock margin ="5" > 我是右键菜单3 </ TextBlock >
</ StackPanel >
<!-- 右键菜单的位置 -->
< border.Rendertransform >
< Translatetransform x:name ="tt" />
</ border.Rendertransform >
</ border >
</ UserControl >
RightClick.xaml.cs
using System;
using System.Collections.Generic;
using System.linq;
using System.Net;
using System.windows;
using System.windows.Controls;
using System.windows.documents;
using System.windows.input;
using System.windows.Media;
using System.windows.Media.Animation;
using System.windows.Shapes;
using System.windows.browser;
namespace Silverlight20.Tip
{
public partial class RightClick : UserControl
{
public RightClick()
{
InitializeComponent();
this.Loaded += new RoutedEventHandler(RightClick_Loaded);
}
voID RightClick_Loaded(object sender, RoutedEventArgs e)
{
// 监听页面的 oncontextmenu 事件，并处理
// 注：如果要监听 oncontextmenu 事件，需要将 Silverlight 程序的 windowless 属性设置为 true
HTMLPage.document.AttachEvent("oncontextmenu", this.OnContextMenu);
}
private voID OnContextMenu(object sender, HTMLEventArgs e)
@H_631_3013@
{// 设置右键菜单出现的位置
tt.X = e.OffsetX - 201;
tt.Y = e.OffsetY - 30;
// 禁止其他 DOM 响应该事件（屏蔽掉默认的右键菜单）
// 相当于 event.returnValue = false;
e.PreventDefault();
}
}
}
5、Silverlight 程序的常用配置参数的说明
ParamDemo.HTML
<! 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 >
< Title > Silverlight20 </ Title >
< style type ="text/CSS" >
HTML, body
{
height: 100%;
overflow auto
}
body
padding 0
margin
#silverlightControlHost
@H_70_3270@
</ style >
< script type ="text/JavaScript" src ="../Silverlight.Js" ></ script >
</ head >
< body >
< div ID ="silverlightControlHost" >
<!--
注：括号里为 Silverlight 控件所对应的属性
source(Source) - xap 文件的路径
minRuntimeVersion(MinimumVersion) - 所需的最低 Silverlight 插件版本
autoUpgrade(autoUpgrade) - Silverlight 插件是否要自动升级。默认值 true
initParams(InitParameters) - 为 Silverlight 程序传递初始化参数。用“,”分隔
enableFrameRateCounter(EnableFrameRateCounter) - 是否在宿主浏览器的状态栏中显示当前呈现的 Silverlight 内容的每秒帧数(fps)，用于调试用。默认值 false
maxFrameRate(MaxFrameRate) - 每秒要呈现的最大帧数。默认值 0 （表示未指定最大帧数）
enableRedrawRegions(EnableRedrawRegions) - 是否显示每个帧所重绘的区域。默认值 false
enableHTMLAccess(HTMLAccess) - 是否允许 HTML DOM 访问
对于 object 标记的 param : value="true" - 允许；value="false" - 不允许；无此 param - 同域允许
对于 Silverlight 控件的 HTMLAccess 属性 : Enabled - 允许；Disabled - 不允许；SameDomain - 同域允许
windowless(windowless) - 指定 Silverlight 插件是否为无窗口插件
-->
< object ID ="xaml1" data ="data:application/x-silverlight-2," type ="application/x-silverlight-2"
wIDth ="100%" height ="100%" >
< param name ="source" value ="../ClIEntBin/Silverlight20.xap" />
< param name ="minRuntimeVersion" value ="2.0.31005.0" />
< param name ="autoUpgrade" value ="true" />
< param name ="initParams" value ="key1=value1,key2=value2" />
< param name ="enableFrameRateCounter" value ="true" />
< param name ="maxFrameRate" value ="30" />
< param name ="enableRedrawRegions" value ="false" />
< param name ="enableHTMLAccess" value ="true" />
< param name ="windowless" value ="true" />
</ object >
< iframe style ='visibility: hIDden; height: 0; wIDth: 0; border: 0px' ></ iframe >
<!-- iframe 元素和其他附加到 HTML 的元素有助于确保跨浏览器兼容性。iframe 的存在可避免 Safari 浏览器缓存页面。当用户向后导航到以前访问过的 Silverlight 页面时，Safari 缓存可避免重新加载 Silverlight 插件 -->
</ div >
</ body >
</ HTML >
OK
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