SecurityPermissionAttribute.ControlEvidence 属性

获取或设置一个值，该值指示是否声明了改变或操作证据的权限。

**命名空间:**System.Security.Permissions
**程序集:**mscorlib（在 mscorlib.dll 中）

语法

声明
Public Property ControlEvidence As Boolean
用法
Dim instance As SecurityPermissionAttribute
Dim value As Boolean

value = instance.ControlEvidence

instance.ControlEvidence = value

public bool ControlEvidence { get; set; }

public:
property bool ControlEvidence {
    bool get ();
    void set (bool value);
}

/** @property */
public boolean get_ControlEvidence ()

/** @property */
public void set_ControlEvidence (boolean value)

public function get ControlEvidence () : boolean

public function set ControlEvidence (value : boolean)

属性值

如果声明了改变或操作证据的能力，则为 true；否则为 false。

示例

下面的代码示例演示如何使用 ControlEvidence 属性拒绝改变或操作证据的能力。有关完整的代码示例，请参见 SecurityPermissionAttribute 类。

' Set the Assertion,UnmanagedCode, ControlAppDomain, ControlDomainPolicy, ontrolEvidence, 
' ControlPolicy, ControlPrincipal, ControlThread, Execution, Flags, Infrastructure, 
' RemotingConfiguration, SerializationFormatter, and SkipVerification properties.
<SecurityPermissionAttribute(SecurityAction.Deny, Assertion:=True), _
SecurityPermissionAttribute(SecurityAction.Deny, ControlAppDomain:=True), _
SecurityPermissionAttribute(SecurityAction.Deny, ControlDomainPolicy:=True), _
SecurityPermissionAttribute(SecurityAction.Deny, ControlEvidence:=True), _
SecurityPermissionAttribute(SecurityAction.Deny, ControlPolicy:=True), _
SecurityPermissionAttribute(SecurityAction.Deny, ControlPrincipal:=True), _
SecurityPermissionAttribute(SecurityAction.Deny, ControlThread:=True), _
SecurityPermissionAttribute(SecurityAction.Deny, Execution:=True), _
SecurityPermissionAttribute(SecurityAction.Deny, Flags:=SecurityPermissionFlag.NoFlags), _
SecurityPermissionAttribute(SecurityAction.Deny, Infrastructure:=True), _
SecurityPermissionAttribute(SecurityAction.Deny, RemotingConfiguration:=True), _
SecurityPermissionAttribute(SecurityAction.Deny, SerializationFormatter:=True), _
SecurityPermissionAttribute(SecurityAction.Deny, SkipVerification:=True), _
SecurityPermissionAttribute(SecurityAction.Deny, UnmanagedCode:=True)> _
Public Shared Sub DenySecurityPermissions()

    // Set the ControlEvidence property.
[SecurityPermissionAttribute(SecurityAction.Deny, ControlEvidence = true)]

[SecurityPermissionAttribute(SecurityAction::Deny,ControlEvidence=true)]
// Set the ControlEvidence property.

// Set the ControlEvidence property.
/** @attribute SecurityPermissionAttribute(SecurityAction.Deny, 
    ControlEvidence = true)
 */

平台

Windows 98、Windows 2000 SP4、Windows Millennium Edition、Windows Server 2003、Windows XP Media Center Edition、Windows XP Professional x64 Edition、Windows XP SP2、Windows XP Starter Edition

.NET Framework 并不是对每个平台的所有版本都提供支持。有关受支持版本的列表，请参见系统要求。

版本信息

.NET Framework

受以下版本支持：2.0、1.1、1.0

请参见

参考

SecurityPermissionAttribute 类
SecurityPermissionAttribute 成员
System.Security.Permissions 命名空间