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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)

void FromXml(
	SecurityElement 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 override void FromXml(SecurityElement e)
    m_specifiedAsUnrestricted = false;
    m_flags = 0;

    // If XML indicates an unrestricted permission, make this permission unrestricted.
    String s = (String)e.Attributes["Unrestricted"];
    if (s != null)
        m_specifiedAsUnrestricted = Convert.ToBoolean(s);
        if (m_specifiedAsUnrestricted)
            m_flags = SoundPermissionState.PlayAnySound;

    // If XML indicates a restricted permission, parse the flags.
    if (!m_specifiedAsUnrestricted)
        s = (String)e.Attributes["Flags"];
        if (s != null)
            m_flags = (SoundPermissionState)
            Convert.ToInt32(Enum.Parse(typeof(SoundPermission), s, true));

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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