断言执行非托管代码的权限 [英] Asserting the permission to execute unmanaged code
问题描述
什么是声明？ （类）我需要声明允许
我的代码可以运行非托管代码。
我有：
== ==============
[System.Runtime.InteropServices.DllImport（" KERNEL32"）]
private static extern bool QueryPerformanceCounter（ref long
lpPerformanceCount）;
[System.Runtime.InteropServices.DllImport（" KERNEL32"） ]
private static extern bool QueryPerformanceFrequency（ref long
lpFrequency）;
== ==================
在调用QueryPerformanceCounter之前，我想要Assert（）
许可，但我完全错过了语法，甚至没有真正的线索
关于要使用的类（例如，SecurityAction，但可能是
其他的东西）：
================
静态计时（）
{
//初始化频率
CodeAccessPermission perm = new SecurityAction ??? ; //<<<这里
perm.Assert（）;
dummy = QueryPerformanceFrequency（ref frequency）;
dummy = QueryPerformanceCounter（ref fpsStartingCounter）;
perm.RevertAssert（）;
....
==============
提前致谢，
Vanderghast，Access MVP
Hi,
What is the "declaration" (class) I need to assert the permission that
my code can run unmanaged code.
I have:
================
[System.Runtime.InteropServices.DllImport("KERNEL32 ")]
private static extern bool QueryPerformanceCounter( ref long
lpPerformanceCount);
[System.Runtime.InteropServices.DllImport("KERNEL32 ")]
private static extern bool QueryPerformanceFrequency( ref long
lpFrequency);
====================
and before calling QueryPerformanceCounter, I want to Assert() the
permission, but I completely miss the syntax, having not even a real clue
about the class to use (for illustration, SecurityAction, but probably
something else):
================
static Timings()
{
// Initialize the frequency
CodeAccessPermission perm = new SecurityAction??? ; // <<< HERE
perm.Assert();
dummy=QueryPerformanceFrequency( ref frequency);
dummy=QueryPerformanceCounter(ref fpsStartingCounter);
perm.RevertAssert();
....
==============
Thanks in advance,
Vanderghast, Access MVP
推荐答案
Michel，
你想创建一个实例SecurityPermission类的传递，从SecurityPermissionFlag枚举中的UnmanagedCode值传递
。
从那里，你可以调用Assert。
希望这会有所帮助。
-
- Nicholas Paldino [.NET / C＃MVP]
- mv*@spam.guard.caspershouse.com
" Michel Walsh" < vanderghast @ VirusAreFunnierThanSpam>在留言中写道
news：u9 ************** @ TK2MSFTNGP14.phx.gbl ...
Michel,
You want to create an instance of the SecurityPermission class, passing
in the UnmanagedCode value from the SecurityPermissionFlag enumeration.
From there, you can call Assert.
Hope this helps.
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard.caspershouse.com
"Michel Walsh" <vanderghast@VirusAreFunnierThanSpam> wrote in message
news:u9**************@TK2MSFTNGP14.phx.gbl...
什么是声明？ （类）我需要声明我的代码可以运行非托管代码的权限。
我有：
========== ======
[System.Runtime.InteropServices.DllImport（" KERNEL32"）]
private static extern bool QueryPerformanceCounter（ref long
lpPerformanceCount）;
[System.Runtime.InteropServices.DllImport（" KERNEL32"）]
private static extern bool QueryPerformanceFrequency（ref long
lpFrequency）;
====================
在调用QueryPerformanceCounter之前，我想要Assert（ ）
权限，但我完全错过了语法，甚至没有真正的线索关于要使用的类（例如，SecurityAction，但可能还有其他的东西）：
================
静态计时（）
{
/ /初始化频率
CodeAccessPermission perm = new SecurityAction ??? ; //<<<这里
perm.Assert（）;
dummy = QueryPerformanceFrequency（引用频率）;
dummy = QueryPerformanceCounter（ref fpsStartingCounter）;
perm.RevertAssert（）;
...
==============
提前致谢，
Vanderghast，Access MVP
Hi,
What is the "declaration" (class) I need to assert the permission that
my code can run unmanaged code.
I have:
================
[System.Runtime.InteropServices.DllImport("KERNEL32 ")]
private static extern bool QueryPerformanceCounter( ref long
lpPerformanceCount);
[System.Runtime.InteropServices.DllImport("KERNEL32 ")]
private static extern bool QueryPerformanceFrequency( ref long
lpFrequency);
====================
and before calling QueryPerformanceCounter, I want to Assert() the
permission, but I completely miss the syntax, having not even a real clue
about the class to use (for illustration, SecurityAction, but probably
something else):
================
static Timings()
{
// Initialize the frequency
CodeAccessPermission perm = new SecurityAction??? ; // <<< HERE
perm.Assert();
dummy=QueryPerformanceFrequency( ref frequency);
dummy=QueryPerformanceCounter(ref fpsStartingCounter);
perm.RevertAssert();
...
==============
Thanks in advance,
Vanderghast, Access MVP
这应该可以解决问题更安全的表格< g>）：
IStackWalk perm = new SecurityPermission
SecurityPermissionFlag.UnmanagedCode）;
perm.Assert（ ）;
尝试
{
dummy = QueryPerformanceFrequency（ref frequency）;
dummy = QueryPerformanceCounter（ref fpsStartingCounter）;
}
终于
{
CodeAccessPermission.RevertAll（）;
}
" Michel Walsh" < vanderghast @ VirusAreFunnierThanSpam>在留言中写道
news：u9 ************** @ TK2MSFTNGP14.phx.gbl ...
This should do the trick (in a slightly safer form <g>):
IStackWalk perm = new SecurityPermission
SecurityPermissionFlag.UnmanagedCode);
perm.Assert();
try
{
dummy = QueryPerformanceFrequency(ref frequency);
dummy = QueryPerformanceCounter(ref fpsStartingCounter);
}
finally
{
CodeAccessPermission.RevertAll();
}
"Michel Walsh" <vanderghast@VirusAreFunnierThanSpam> wrote in message
news:u9**************@TK2MSFTNGP14.phx.gbl...
什么是声明？ （类）我需要声明我的代码可以运行非托管代码的权限。
我有：
========== ======
[System.Runtime.InteropServices.DllImport（" KERNEL32"）]
private static extern bool QueryPerformanceCounter（ref long
lpPerformanceCount）;
[System.Runtime.InteropServices.DllImport（" KERNEL32"）]
private static extern bool QueryPerformanceFrequency（ref long
lpFrequency）;
====================
在调用QueryPerformanceCounter之前，我想要Assert（ ）
权限，但我完全错过了语法，甚至没有真正的线索关于要使用的类（例如，SecurityAction，但可能还有其他的东西）：
================
静态计时（）
{
/ /初始化频率
CodeAccessPermission perm = new SecurityAction ??? ; //<<<这里
perm.Assert（）;
dummy = QueryPerformanceFrequency（引用频率）;
dummy = QueryPerformanceCounter（ref fpsStartingCounter）;
perm.RevertAssert（）;
...
==============
提前致谢，
Vanderghast，Access MVP
Hi,
What is the "declaration" (class) I need to assert the permission that
my code can run unmanaged code.
I have:
================
[System.Runtime.InteropServices.DllImport("KERNEL32 ")]
private static extern bool QueryPerformanceCounter( ref long
lpPerformanceCount);
[System.Runtime.InteropServices.DllImport("KERNEL32 ")]
private static extern bool QueryPerformanceFrequency( ref long
lpFrequency);
====================
and before calling QueryPerformanceCounter, I want to Assert() the
permission, but I completely miss the syntax, having not even a real clue
about the class to use (for illustration, SecurityAction, but probably
something else):
================
static Timings()
{
// Initialize the frequency
CodeAccessPermission perm = new SecurityAction??? ; // <<< HERE
perm.Assert();
dummy=QueryPerformanceFrequency( ref frequency);
dummy=QueryPerformanceCounter(ref fpsStartingCounter);
perm.RevertAssert();
...
==============
Thanks in advance,
Vanderghast, Access MVP
对不起，怪异的复制粘贴工件。应该是：
IStackWalk perm = new
SecurityPermission（SecurityPermissionFlag.Unmanage dCode）;
perm.Assert（） ;
....
" Michel Walsh" < vanderghast @ VirusAreFunnierThanSpam>在留言中写道
news：u9 ************** @ TK2MSFTNGP14.phx.gbl ...
Sorry, weird copy-paste artifact. That should have been:
IStackWalk perm = new
SecurityPermission(SecurityPermissionFlag.Unmanage dCode);
perm.Assert();
....
"Michel Walsh" <vanderghast@VirusAreFunnierThanSpam> wrote in message
news:u9**************@TK2MSFTNGP14.phx.gbl...
什么是声明？ （类）我需要声明我的代码可以运行非托管代码的权限。
我有：
========== ======
[System.Runtime.InteropServices.DllImport（" KERNEL32"）]
private static extern bool QueryPerformanceCounter（ref long
lpPerformanceCount）;
[System.Runtime.InteropServices.DllImport（" KERNEL32"）]
private static extern bool QueryPerformanceFrequency（ref long
lpFrequency）;
====================
在调用QueryPerformanceCounter之前，我想要Assert（ ）
权限，但我完全错过了语法，甚至没有真正的线索关于要使用的类（例如，SecurityAction，但可能还有其他的东西）：
================
静态计时（）
{
/ /初始化频率
CodeAccessPermission perm = new SecurityAction ??? ; //<<<这里
perm.Assert（）;
dummy = QueryPerformanceFrequency（引用频率）;
dummy = QueryPerformanceCounter（ref fpsStartingCounter）;
perm.RevertAssert（）;
...
==============
提前致谢，
Vanderghast，Access MVP
Hi,
What is the "declaration" (class) I need to assert the permission that
my code can run unmanaged code.
I have:
================
[System.Runtime.InteropServices.DllImport("KERNEL32 ")]
private static extern bool QueryPerformanceCounter( ref long
lpPerformanceCount);
[System.Runtime.InteropServices.DllImport("KERNEL32 ")]
private static extern bool QueryPerformanceFrequency( ref long
lpFrequency);
====================
and before calling QueryPerformanceCounter, I want to Assert() the
permission, but I completely miss the syntax, having not even a real clue
about the class to use (for illustration, SecurityAction, but probably
something else):
================
static Timings()
{
// Initialize the frequency
CodeAccessPermission perm = new SecurityAction??? ; // <<< HERE
perm.Assert();
dummy=QueryPerformanceFrequency( ref frequency);
dummy=QueryPerformanceCounter(ref fpsStartingCounter);
perm.RevertAssert();
...
==============
Thanks in advance,
Vanderghast, Access MVP
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