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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
)

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 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: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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