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ISecurityEncodable.FromXml Method

Reconstructs a security object with a specified state from an XML encoding.

Namespace:  System.Security
Assembly:  mscorlib (in mscorlib.dll)

'Declaration
Sub FromXml ( _
	e As SecurityElement _
)

Parameters

e
Type: System.Security.SecurityElement

The XML encoding to use to reconstruct the security object.

Custom code that extends security objects needs to implement the ToXml and FromXml methods to make the objects security-encodable.

The following code example demonstrates implementing the FromXml method. This code example is part of a larger example provided for the ISecurityEncodable class.

    ' Populate the permission's fields from XML. 
    Public Overrides Sub FromXml(ByVal e As SecurityElement)
        m_specifiedAsUnrestricted = False
        m_flags = 0

        ' If XML indicates an unrestricted permission, make this permission unrestricted. 
        Dim s As String = CStr(e.Attributes("Unrestricted"))
        If Not (s Is Nothing) Then
            m_specifiedAsUnrestricted = Convert.ToBoolean(s)
            If m_specifiedAsUnrestricted Then
                m_flags = SoundPermissionState.PlayAnySound
            End If 
        End If 
        ' If XML indicates a restricted permission, parse the flags. 
        If Not m_specifiedAsUnrestricted Then
            s = CStr(e.Attributes("Flags"))
            If Not (s Is Nothing) Then
                m_flags = CType(Convert.ToInt32([Enum].Parse(GetType(SoundPermission), s, True)), SoundPermissionState)
            End If 
        End If 

    End Sub 'FromXml

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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