Move P/Invokes to NativeMethods class Because it is a P/Invoke method message
.net, c#, pinvoke
Solution
To get rid of the warning, just add your `P/Invoke` methods to one of the classes below (usually `NativeMethods`). If you are creating a reusable library, you should put these in either `UnsafeNativeMethods` or `SafeNativeMethods`.
The msdn page says
To fix a violation of this rule, move the method to the appropriate NativeMethods class. For most applications, moving P/Invokes to a new class that is named NativeMethods is enough.
There are 3 `NativeMethods` classes they recommend using:
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 - 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 - 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.
But most of the time it is okay to just use the `NativeMethods` class (this will at least get rid of the warning you are seeing):
internal static class NativeMethods
{
[DllImport("kernel32.dll")]
internal static extern bool RemoveDirectory(string name);
}
There is some discussion about this here, and the article linked above gives some suggestions on when to use each of the 3 classes:
NativeMethods
Because the NativeMethods class should not be marked by using SuppressUnmanagedCodeSecurityAttribute, P/Invokes that are put in it will require UnmanagedCode permission. Because most applications run from the local computer and run together with full trust, this is usually not a problem. However, if you are developing reusable libraries, you should consider defining a SafeNativeMethods or UnsafeNativeMethods class.
SafeNativeMethods
P/Invoke methods that can be safely exposed to any application and that do not have any side effects should be put in a class that is named SafeNativeMethods. You do not have to demand permissions and you do not have to pay much attention to where they are called from.
UnsafeNativeMethods
P/Invoke methods that cannot be safely called and that could cause side effects should be put in a class that is named UnsafeNativeMethods. These methods should be rigorously checked to make sure that they are not exposed to the user unintentionally. The rule CA2118: Review SuppressUnmanagedCodeSecurityAttribute usage can help with this. Alternatively, the methods should have another permission that is demanded instead of UnmanagedCode when they use them.
Problem
Can someone suggest what do I have to do with this message? CA1060 Move P/Invokes to NativeMethods class Because it is a P/Invoke method, 'UControl.InternetGetConnectedState(out int, int)' should be defined in a class named NativeMethods, SafeNativeMethods, or UnsafeNativeMethods. Mega. UControl.xaml.cs 33 Code: ``` namespace Mega { /// <summary> /// Interaction logic for UserControl1.xaml /// </summary> public partial class UControl { [DllImport("wininet.dll")] private extern static bool InternetGetConnectedState(out int description, int reservedValue); ``` THANK YOU!