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WebPermission.FromXml Method

Reconstructs a WebPermission from an XML encoding.

Namespace:  System.Net
Assembly:  System (in System.dll)

public override void FromXml(
	SecurityElement securityElement
)

Parameters

securityElement
Type: System.Security.SecurityElement

The XML encoding from which to reconstruct the WebPermission.

Implements

ISecurityEncodable.FromXml(SecurityElement)

ExceptionCondition
ArgumentNullException

The securityElement parameter is null.

ArgumentException

securityElement is not a permission element for this type.

The FromXml method reconstructs a WebPermission from an XML encoding that is defined by the SecurityElement class.

Use the ToXml method to XML-encode the WebPermission, including state information.

The following example creates a System.Security.SecurityElement, populates its attributes, and uses FromXml to transfer this information to an instance of WebPermission.


    // Create  a WebPermission without permission on the protected resource.
    WebPermission myWebPermission1 = new WebPermission(PermissionState.None);

    // Create a SecurityElement by calling the ToXml method on the WebPermission  
    // instance and display its attributes (which hold the XML encoding of  
    // the WebPermission).
    Console.WriteLine("Attributes and Values of the WebPermission are :");
    myWebPermission1.ToXml().ToString();

    // Create another WebPermission with no permission on the protected resource.
    WebPermission myWebPermission2 = new WebPermission(PermissionState.None);

    //Converts the new WebPermission from XML using myWebPermission1.
    myWebPermission2.FromXml(myWebPermission1.ToXml());

.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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