UrlPropertyAttribute Class
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UrlPropertyAttribute Class

 

Defines the attribute that controls use to identify string properties containing URL values. This class cannot be inherited.

Namespace:   System.Web.UI
Assembly:  System.Web (in System.Web.dll)

System.Object
  System.Attribute
    System.Web.UI.UrlPropertyAttribute

<AttributeUsageAttribute(AttributeTargets.Property)>
Public NotInheritable Class UrlPropertyAttribute
	Inherits Attribute

NameDescription
System_CAPS_pubmethodUrlPropertyAttribute()

Initializes a new default instance of the UrlPropertyAttribute class.

System_CAPS_pubmethodUrlPropertyAttribute(String)

Initializes a new instance of the UrlPropertyAttribute class, setting the Filter property to the specified string.

NameDescription
System_CAPS_pubpropertyFilter

Gets a file filter associated with the URL-specific property.

System_CAPS_pubpropertyTypeId

When implemented in a derived class, gets a unique identifier for this Attribute.(Inherited from Attribute.)

NameDescription
System_CAPS_pubmethodEquals(Object)

Returns a value that indicates whether this instance is equal to a specified object.(Overrides Attribute.Equals(Object).)

System_CAPS_pubmethodGetHashCode()

Returns the hash code for this instance.(Overrides Attribute.GetHashCode().)

System_CAPS_pubmethodGetType()

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_pubmethodIsDefaultAttribute()

When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class.(Inherited from Attribute.)

System_CAPS_pubmethodMatch(Object)

When overridden in a derived class, returns a value that indicates whether this instance equals a specified object.(Inherited from Attribute.)

System_CAPS_pubmethodToString()

Returns a string that represents the current object.(Inherited from Object.)

NameDescription
System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr)

Maps a set of names to a corresponding set of dispatch identifiers.(Inherited from Attribute.)

System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute.GetTypeInfo(UInt32, UInt32, IntPtr)

Retrieves the type information for an object, which can be used to get the type information for an interface.(Inherited from Attribute.)

System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute.GetTypeInfoCount(UInt32)

Retrieves the number of type information interfaces that an object provides (either 0 or 1).(Inherited from Attribute.)

System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr)

Provides access to properties and methods exposed by an object.(Inherited from Attribute.)

The UrlPropertyAttribute attribute is an attribute applied to a control property that represents a URL. In addition to marking a string property as representing a URL, the UrlPropertyAttribute attribute defines the Filter property that identifies specific file types that can be used to filter against the property.

The following code example demonstrates a class that implements a URL-specific property. In this code example, a UrlPropertyAttribute attribute is applied to the TargetUrl property of the CustomHyperLinkControl class. The attribute sets a specific file filter for ASP.NET files.

Public Class CustomHyperLinkControl
    Inherits WebControl

    Public Sub New()
    End Sub 'NewNew

    ' The TargetUrl property represents the URL that 
    ' the custom hyperlink control navigates to.        
    <UrlProperty("*.aspx")> _
    Public Property TargetUrl() As String
        Get
            Dim s As String = CStr(ViewState("TargetUrl"))
            If (s Is Nothing) Then
                Return String.Empty
            Else
                Return s
            End If
        End Get
        Set(ByVal value As String)
            ViewState("TargetUrl") = value
        End Set
    End Property

    ' The Text property represents the visible text that 
    ' the custom hyperlink control is displayed with.                
    Public Overridable Property [Text]() As String
        Get
            Dim s As String = CStr(ViewState("Text"))
            If (s Is Nothing) Then
                Return String.Empty
            Else
                Return s
            End If
        End Get
        Set(ByVal value As String)
            ViewState("Text") = value
        End Set
    End Property

    ' Implement method to render the control.

End Class 'CustomHyperLinkControl

.NET Framework
Available since 2.0

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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