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VB.NET IAttributeAccessor接口代码示例

本文整理汇总了VB.NET中System.Web.UI.IAttributeAccessor接口的典型用法代码示例。如果您正苦于以下问题:VB.NET IAttributeAccessor接口的具体用法?VB.NET IAttributeAccessor怎么用?VB.NET IAttributeAccessor使用的例子?那么恭喜您, 这里精选的接口代码示例或许可以为您提供帮助。


在下文中一共展示了IAttributeAccessor接口的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的VB.NET代码示例。

示例1: SetAttribute

' The following class creates a custom ASP.NET server control that implements
' the IAttributeAccessor interface. It creates a MyTextBox class that contains
' Width and Text properties that get and set their values from view state.
' Pages that use this control create an instance of this control and set the
' Width property using the IAttributeAccessor.SetAttribute method. 
' The page then displays the values of the Text and Width properties 
' using the IAttributeAccessor.GetAttribute method.
' When compiled, this assembly is named MyAttributeAccessor.
Imports System.Web
Imports System.Web.UI
Imports System.Security.Permissions

Namespace AttributeAccessor

 <AspNetHostingPermission(SecurityAction.Demand, _
   Level:=AspNetHostingPermissionLevel.Minimal)> _
 Public NotInheritable Class MyTextBox
   Inherits Control
   Implements IAttributeAccessor 

   ' Declare the Width property.   
   Public Property Width() As String
      Get
         Return CType(ViewState("Width"), String)
      End Get
      Set
         ViewState("Width") = value
      End Set
   End Property
   
   ' Declare the Text property.
   
   Public Property Text() As String
      Get
         Return CType(ViewState("Text"), String)
      End Get
      Set
         ViewState("Text") = value
      End Set
   End Property
   
   ' Implement the SetAttribute method for the control. When
   ' this method is called from a page, the control's properties
   ' are set to values defined in the page.
   Public Sub SetAttribute(name As String, value1 As String) Implements IAttributeAccessor.SetAttribute
      ViewState(name) = value1
   End Sub
   
   ' Implement the GetAttribute method for the control. When
   ' this method is called from a page, the values for the control's
   ' properties can be displayed in the page.
   Public Function GetAttribute(name As String) As String Implements IAttributeAccessor.GetAttribute
      Return CType(ViewState(name), String)
   End Function 'GetAttribute
   
   Protected Overrides Sub Render(output As HtmlTextWriter)
      output.Write(("<input type=text id= " + Me.UniqueID))
      output.Write((" Value='" + Me.Text))
      output.Write(("' Size=" + Me.Width + ">"))
   End Sub
 End Class
End Namespace 'AttributeAccessor
开发者ID:VB.NET开发者,项目名称:System.Web.UI,代码行数:62,代码来源:IAttributeAccessor


注:本文中的System.Web.UI.IAttributeAccessor接口示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。