SilverLight中自定义图标控件

一时失言乱红尘 2022-08-07 12:51 205阅读 0赞

SilverLight中自定义图标控件

1.建立一个用于读取资源的类SharedResources

using System;

using System.Collections.Generic;

using System.Diagnostics.CodeAnalysis;

using System.IO;

using System.Linq;

using System.Reflection;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Markup;

using System.Windows.Media.Imaging;

using System.Xml.Linq;

namespace System.Windows.Controls.Samples

///<summary>

/// Utility to to load shared resources into another ResourceDictionary.

///</summary>

public static class SharedResources

///<summary>

/// Prefix of images loaded as resources.

///需要将资源嵌入，路径用命名空间的形式定义.

///</summary>

private const string ResourceImagePrefix = "System.Windows.Controls.Samples.Images.";

///<summary>

/// Prefix of icons loaded as resources.

///需要将资源嵌入，路径用命名空间的形式定义.

///</summary>

private const string ResourceIconPrefix = "System.Windows.Controls.Samples.Icons.";

///<summary>

/// Get an embedded resource image from the assembly.

///</summary>

///<param name="name">Name of the image resource.</param>

///<returns>

/// Desired embedded resource image from the assembly.

///</returns>

public static Image GetImage(string name)

return CreateImage(ResourceImagePrefix, name);

///<summary>

/// Get an embedded resource icon from the assembly.

///</summary>

///<param name="name">Name of the icon resource.</param>

///<returns>

/// Desired embedded resource icon from the assembly.

///</returns>

public static Image GetIcon(string name)

return CreateImage(ResourceIconPrefix, name);

///<summary>

/// A cached dictionary of the bitmap images.

///</summary>

private static IDictionary<string, BitmapImage> cachedBitmapImages = new Dictionary<string, BitmapImage>();

///<summary>

/// Get an embedded resource image from the assembly.

///</summary>

///<param name="prefix">The prefix of the full name of the resource.</param>

///<param name="name">Name of the image resource.</param>

///<returns>

/// Desired embedded resource image from the assembly.

///</returns>

public static Image CreateImage(string prefix, string name)

Image image = new Image \{ Tag = name \};

BitmapImage source = null;

string resourceName = prefix + name;

if (!cachedBitmapImages.TryGetValue(resourceName, out source))

Assembly assembly = typeof(SharedResources).Assembly;

using (Stream resource = assembly.GetManifestResourceStream(resourceName))

if (resource != null)

source = new BitmapImage();

source.SetSource(resource);

cachedBitmapImages\[resourceName\] = source;

image.Source = source;

return image;

///<summary>

/// Get all of the names of embedded resources images in the assembly.

///</summary>

///<returns>

/// All of the names of embedded resources images in the assembly.

///</returns>

\[SuppressMessage("Microsoft.Design", "CA1024:UsePropertiesWhereAppropriate", Justification = "Does more work than a property should.")\]

public static IEnumerable<string> GetImageNames()

return GetResourceNames(ResourceImagePrefix);

///<summary>

/// Get all of the names of embedded resources icons in the assembly.

///</summary>

///<returns>

/// All of the names of embedded resources icons in the assembly.

///</returns>

\[SuppressMessage("Microsoft.Design", "CA1024:UsePropertiesWhereAppropriate", Justification = "Does more work than a property should.")\]

public static IEnumerable<string> GetIconNames()

return GetResourceNames(ResourceIconPrefix);

///<summary>

/// Get all of the images in the assembly.

///</summary>

///<returns>All of the images in the assembly.</returns>

\[SuppressMessage("Microsoft.Design", "CA1024:UsePropertiesWhereAppropriate", Justification = "Does more work than a property should")\]

public static IEnumerable<Image> GetImages()

foreach (string name in GetImageNames())

yield return GetImage(name);

///<summary>

/// Get all of the icons in the assembly.

///</summary>

///<returns>All of the icons in the assembly.</returns>

\[SuppressMessage("Microsoft.Design", "CA1024:UsePropertiesWhereAppropriate", Justification = "Does more work than a property should")\]

public static IEnumerable<Image> GetIcons()

foreach (string name in GetIconNames())

yield return GetImage(name);

///<summary>

/// Get all the names of embedded resources in the assembly with the

/// provided prefix value.

///</summary>

///<param name="prefix">The prefix for the full resource name.</param>

///<returns>Returns an enumerable of all the resource names that match.</returns>

private static IEnumerable<string> GetResourceNames(string prefix)

Assembly assembly = typeof(SharedResources).Assembly;

foreach (string name in assembly.GetManifestResourceNames())

// Ignore resources that don't share the images prefix

if (!name.StartsWith(prefix, StringComparison.OrdinalIgnoreCase))

continue;

// Trim the prefix off of the name

yield return name.Substring(prefix.Length, name.Length - prefix.Length);

2.定义节点SampleTreeItem

using System;

using System.Collections.Generic;

using System.Collections.ObjectModel;

using System.Windows.Markup;

using System.Windows.Controls;

namespace System.Windows.Controls.Samples

///<summary>

/// The SampleTreeItem represents a node in the TreeView.

///</summary>

\[ContentProperty("Items")\]

public class SampleTreeItem

///<summary>

/// Gets or sets the name of the TreeView node.

///</summary>

public string TreeItemName \{ get; set; \}

///<summary>

///Gets a collection of SampleTreeItems.

///</summary>

public Collection<SampleTreeItem> Items \{ get; private set; \}

///<summary>

/// Initialize a SampleTreeItem.

///</summary>

public SampleTreeItem()

Items = new Collection<SampleTreeItem>();

///<summary>

/// Gets or sets the resource name of the Icon representing this

/// node.

///</summary>

public string IconResourceName \{ get; set; \}

///<summary>

/// Gets the icon representing this type.

///</summary>

public Image Icon

get

return SharedResources.GetIcon(IconResourceName);

3.定义数据源,这里将数据写死在App.xaml中

<toolkit:ObjectCollection x:Key="SampleTreeView" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation">

<samplesCommon:SampleTreeItem TreeItemName="Controls">

<samplesCommon:SampleTreeItem TreeItemName="Calendar" IconResourceName="Calendar.png"/>

<samplesCommon:SampleTreeItem TreeItemName="ChildWindow" IconResourceName="ChildWindow.png" />

<samplesCommon:SampleTreeItem TreeItemName="DatePicker" IconResourceName="DatePicker.png" />

<samplesCommon:SampleTreeItem TreeItemName="GridSplitter" IconResourceName="GridSplitter.png" />

<samplesCommon:SampleTreeItem TreeItemName="TabControl" IconResourceName="TabControl.png" />

<samplesCommon:SampleTreeItem TreeItemName="TreeView" IconResourceName="TreeView.png" />

</samplesCommon:SampleTreeItem>

<samplesCommon:SampleTreeItem TreeItemName="Data">

<samplesCommon:SampleTreeItem TreeItemName="DataGrid" IconResourceName="DataGrid.png" />

<samplesCommon:SampleTreeItem TreeItemName="DataPager" IconResourceName="DataPager.png" />

</samplesCommon:SampleTreeItem>

<samplesCommon:SampleTreeItem TreeItemName="DataForm">

<samplesCommon:SampleTreeItem TreeItemName="DataForm" IconResourceName="DataForm.png" />

</samplesCommon:SampleTreeItem>

<samplesCommon:SampleTreeItem TreeItemName="Data Input">

<samplesCommon:SampleTreeItem TreeItemName="Validation" IconResourceName="ValidationSummary.png" />

</samplesCommon:SampleTreeItem>

<samplesCommon:SampleTreeItem TreeItemName="DataVisualization">

<samplesCommon:SampleTreeItem TreeItemName="Area Series" IconResourceName="AreaSeries.png"/>

<samplesCommon:SampleTreeItem TreeItemName="Bar Series" IconResourceName="BarSeries.png"/>

<samplesCommon:SampleTreeItem TreeItemName="Bubble Series" IconResourceName="BubbleSeries.png"/>

<samplesCommon:SampleTreeItem TreeItemName="Column Series" IconResourceName="ColumnSeries.png"/>

<samplesCommon:SampleTreeItem TreeItemName="Line Series" IconResourceName="LineSeries.png"/>

<samplesCommon:SampleTreeItem TreeItemName="Pie Series" IconResourceName="PieSeries.png"/>

<samplesCommon:SampleTreeItem TreeItemName="Scatter Series" IconResourceName="ScatterSeries.png"/>

<samplesCommon:SampleTreeItem TreeItemName="TreeMap" IconResourceName="TreeMap.png" />

</samplesCommon:SampleTreeItem>

<samplesCommon:SampleTreeItem TreeItemName="Input">

<samplesCommon:SampleTreeItem TreeItemName="AutoCompleteBox" IconResourceName="AutoCompleteBox.png"/>

<samplesCommon:SampleTreeItem TreeItemName="ButtonSpinner" IconResourceName="ButtonSpinner.png"/>

<samplesCommon:SampleTreeItem TreeItemName="DomainUpDown" IconResourceName="DomainUpDown.png"/>

<samplesCommon:SampleTreeItem TreeItemName="NumericUpDown" IconResourceName="NumericUpDown.png"/>

<samplesCommon:SampleTreeItem TreeItemName="Rating" IconResourceName="Rating.png"/>

<samplesCommon:SampleTreeItem TreeItemName="TimePicker" IconResourceName="TimePicker.png"/>

<samplesCommon:SampleTreeItem TreeItemName="UpDownBase" IconResourceName="UpDownBase.png"/>

</samplesCommon:SampleTreeItem>

<samplesCommon:SampleTreeItem TreeItemName="Layout">

<samplesCommon:SampleTreeItem TreeItemName="Accordion" IconResourceName="Accordion.png" />

<samplesCommon:SampleTreeItem TreeItemName="TransitioningContentControl" IconResourceName="TransitioningContentControl.png" />

</samplesCommon:SampleTreeItem>

<samplesCommon:SampleTreeItem TreeItemName="Navigation">

<samplesCommon:SampleTreeItem TreeItemName="Navigation" IconResourceName="Page.png" />

</samplesCommon:SampleTreeItem>

<samplesCommon:SampleTreeItem TreeItemName="Theming">

<samplesCommon:SampleTreeItem TreeItemName="ImplicitStyleManager" IconResourceName="ImplicitStyleManager.png"/>

<samplesCommon:SampleTreeItem TreeItemName="Theme Browser" IconResourceName="ThemeBrowser.png"/>

</samplesCommon:SampleTreeItem>

<samplesCommon:SampleTreeItem TreeItemName="Toolkit">

<samplesCommon:SampleTreeItem TreeItemName="DockPanel" IconResourceName="DockPanel.png" />

<samplesCommon:SampleTreeItem TreeItemName="Expander" IconResourceName="Expander.png" />

<samplesCommon:SampleTreeItem TreeItemName="GlobalCalendar" IconResourceName="Calendar.png"/>

<samplesCommon:SampleTreeItem TreeItemName="Viewbox" IconResourceName="ViewBox.png" />

<samplesCommon:SampleTreeItem TreeItemName="WrapPanel" IconResourceName="WrapPanel.png" />

</samplesCommon:SampleTreeItem>

</toolkit:ObjectCollection>

**4.****调用生成带图标节点的树**

using System;

using System.Windows;

using System.Collections.Generic;

using System.Linq;

namespace System.Windows.Controls.Samples

///<summary>

/// System.Windows.Controls samples application.

///</summary>

public partial class App : Application

///<summary>

/// Initializes a new instance of the App class.

///</summary>

public App()

Startup += delegate

RootVisual = new SampleBrowser(this.GetType().Assembly, SampleTreeItems);

\};

InitializeComponent();

///<summary>

/// Gets a collection of SampleTreeItems to populate the SampleBrowser TreeView.

///</summary>

public static IEnumerable<SampleTreeItem> SampleTreeItems

get

IEnumerable<object> data = Application.Current.Resources\["SampleTreeView"\] as IEnumerable<object>;

return (data != null) ?

data.OfType<SampleTreeItem>() :

Enumerable.Empty<SampleTreeItem>();

5．注意事项

SharedResources和SampleTreeItem需要与图标放在同一个项目里，图标需要嵌入到资源,而调用的程序可以在别的项目。

同一个程序可以有多个项目，每个项目可以有自已的“程序集名称”,

但项目间应该使用同一套“命名空间”，也就是说，不同项目间的“命名空间”不可以有重复.

如“程序集名称”可以分别定义成：

System.Windows.Controls.Samples

System.Windows.Controls.Samples.Common

但它们的默认“命名空间”都是System.Windows.Controls.Samples

总之，程序集名称是用来管理文件的（不一定是层次结构）。而命名空间才是用来管理代码的层次结构的。

为什么会这么设计呢。

有时候一个命名空间(一般对应一个文件夹)中的内容可能会很多，这时我们就需要把它拆分成不同的程序集。以便于管理。而有时候呢，代码量很少，不同的命名空间就直接放在一个文件中了。

真正使用时，

一个文件夹对应一个命名空间。如果不同的程序集使用的是同一个命名空间，那么他们应该可以放在同一个文件夹中。也就时说相同命名空间的项目之间,它们的第一级文件及文件夹的名称不可以有重复的。

SilverLight中自定义图标控件

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