放在哪里的DllImport？ [英] Where to put DllImport?

问题描述

static class Class    
{
    public static void methodRequiringStuffFromKernel32()
    {
        // code here...
    }
} 

在哪里我把函数[DllImport（Kernel32中.DLL）] 在这里？

推荐答案

您把它放在你从导入方法KERNEL32.DLL。

You put it on the method you're importing from Kernel32.dll.

例如，

static class Class    
{
    [DllImport("Kernel32.dll")]
    static extern Boolean Beep(UInt32 frequency, UInt32 duration);

    public static void methodRequiringStuffFromKernel32()
    {
        // code here...
        Beep(...);
    }
}

---

从@ DTB ：请注意，类应命名为 NativeMethods ， SafeNativeMethods 或 UnsafeNativeMethods 。请参见命名约定对于非托管代码的方法，获取更多详情。

---

From @dtb: Note that the class should be named NativeMethods, SafeNativeMethods or UnsafeNativeMethods. See Naming Convention for Unmanaged Code Methods for more details.

CA1060：移动p /调用到NativeMethods类：

• NativeMethods - 这个类不禁止堆散步对于非托管代码的权限。 （System.Security.SuppressUnmanagedCodeSecurityAttribute不能应用于此类。）这个类是可以在任何地方使用，因为堆栈步将要执行的方法。

• NativeMethods - This class does not suppress stack walks for unmanaged code permission. (System.Security.SuppressUnmanagedCodeSecurityAttribute must not be applied to this class.) This class is for methods that can be used anywhere because a stack walk will be performed.

SafeNativeMethods - 这个类抑制栈走对于非托管代码的权限。 （System.Security.SuppressUnmanagedCodeSecurityAttribute应用于此类。）这个类是安全的人来调用方法。这些方法的调用者不需要进行全面的安全审查，以确保使用是安全的，因为这些方法都是无害因任何调用

SafeNativeMethods - This class suppresses stack walks for unmanaged code permission. (System.Security.SuppressUnmanagedCodeSecurityAttribute is applied to this class.) This class is for methods that are safe for anyone to call. Callers of these methods are not required to perform a full security review to make sure that the usage is secure because the methods are harmless for any caller.

UnsafeNativeMethods - 这个类可以抑制栈走对于非托管代码的权限。 （System.Security.SuppressUnmanagedCodeSecurityAttribute应用于此类。）这个类是有潜在危险的方法。这些方法的调用方必须进行全面的安全审查，以确保使用是安全的，因为没有堆栈步行将被执行。

UnsafeNativeMethods - This class suppresses stack walks for unmanaged code permission. (System.Security.SuppressUnmanagedCodeSecurityAttribute is applied to this class.) This class is for methods that are potentially dangerous. Any caller of these methods must perform a full security review to make sure that the usage is secure because no stack walk will be performed.

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