Setup tasks provide early initialization and are performed automatically when the target method is invoked. First-time tasks include:

• Verifying that the platform invoke metadata is correctly formatted.

• Verifying that all the managed types are valid parameters of platform invoke functions.

• Locating and loading the unmanaged DLL into the process.

• Locating the entry point in the process.

Calling Prelink on a method outside of platform invoke has no effect. To execute setup tasks on all platform invoke methods in a type, use Marshal.PrelinkAll.

Note

This method uses SecurityAction.LinkDemand to prevent it from being called from untrusted code; only the immediate caller is required to have SecurityPermissionAttribute.UnmanagedCode permission. If your code can be called from partially trusted code, do not pass user input to Marshal class methods without validation. For important limitations on using the LinkDemand member, see Demand vs. LinkDemand.

• SecurityPermission  for permission to call unmanaged code. Associated enumeration: UnmanagedCode Security action: LinkDemand

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

.NET Compact Framework