1.Web Part 通讯
Web Parts可以相互通讯,提供者发布接口,订阅者通过接口获得数据,WebPartManager 管理通讯,从提供者获得接口,向订阅者发布接口,通讯可以是静态的,也可以是动态的,ConnectionsZone 提供后期绑定的UI
通讯提供者实现方法返回接口,方法特性 [ConnectionProvider]
[ConnectionProvider ("Zip Code", "ZipCodeProvider")]
public IZipCode GetZipCodeInterface ()
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{
return this; // Assumes control implements IZipCode
}
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// IZipCode.GetZipCode implementation
public string GetZipCode ()
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{
return _zip;
} 通讯订阅者
实现方法接收接口参数,方法特性 [ConnectionConsumer]
[ConnectionConsumer ("Zip Code", "ZipCodeConsumer")]
public void GetIZipCodeInterface (IZipCode provider)
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{
string zip = provider.GetZipCode (); // Get zip code from provider
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} 静态通讯方式
在 WebPartManager的 <StaticConnections> 元素中定义,最终用户无法修改
<asp:Connection>的实例
<asp:WebPartManager ID="WebPartManager1" Runat="server">
<StaticConnections>
<asp:Connection ID="ZipCodeConnection" Runat="server"
ProviderID="Weather1" ProviderConnectionPointID="ZipCodeProvider"
ConsumerID="News1" ConsumerConnectionPointID="ZipCodeConsumer" />
</StaticConnections>
</asp:WebPartManager>2.ConnectionsZone 控件
提供供Web Part进行通讯的UI,最终用户,而不是开发人员创建通讯关系
<asp:ConnectionsZone ID="ConnectionsZone1"
Runat="server" />3.Web Parts 个性化
Web Parts 个性化服务自动保存相关Web Part的属性 (布局, 外观等等),自动保存标记为 PersonalizableAttribute的定制属性
PersonalizationAdministration 类提供个性化服务的API,Provider-based for flexible data storage
Per-User 个性化,[Personalizable] 为每位用户保存定制属性,string _stocks; // e.g., "MSFT,INTC,AMZN"
[WebBrowsable]
[Personalizable]
public string Stocks
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{
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get
{ return _stocks; }
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set
{ _stocks = value; }
}
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Shared Personalization
[Personalizable (PersonalizationScope.-Shared)] persists properties on shared basis
string _stocks; // e.g., "MSFT,INTC,AMZN"
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[WebBrowsable]
[Personalizable (PersonalizationScope.Shared)]
public string Stocks
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{
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get
{ return _stocks; }
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set
{ _stocks = value; }
}
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个性化服务是基于Provider模式
使用 SQL Server Provider
<configuration>
<system.web>
<webParts>
<personalization defaultProvider="AspNetSqlPersonalizationProvider" />
</webParts>
</system.web>
</configuration>4 定制Web Parts
增加自定义操作
public class MyWebPart : WebPart
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{
public override WebPartVerbCollection Verbs
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{
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get
{
EnsureChildControls ();
WebPartVerb verb =
new WebPartVerb (new WebPartEventHandler (OnClearResults));
verb.Text = "Clear Results";
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WebPartVerb[] verbs = new WebPartVerb[]
{ verb };
return new WebPartVerbCollection (base.Verbs, verbs);
}
}
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void OnClearResults (object sender, WebPartEventArgs args)
{
}
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} 5.导出Web Part
WebPart.ExportMode属性,WebPartExportMode.None (默认),WebPartExportMode.All
WebPartExportMode.NonSensitiveData,All” 及 “NonSensitiveData” 增加导出操作以便Web Part可以被导出
仅[Personalizable] 属性,PersonalizableAttribute.IsSensitive识别 “sensitive” 属性
导出所有属性
public class MyWebPart : WebPart
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{
public MyWebPart ()
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{
ExportMode = WebPartExportMode.All;
}
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}导出所选择的属性
public class MyWebPart : WebPart
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{
public MyWebPart ()
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{
ExportMode = WebPartExportMode.NonSensitiveData;
}
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// This property will be exported
[Personalizable (PersonalizationScope.User, false)]
public string ZipCode
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{
}
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// This one will not
[Personalizable (PersonalizationScope.User, true)]
public string SocialSecurityNumber
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{
}
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}