This topic has not yet been rated - Rate this topic

Marshal.IsTypeVisibleFromCom Method

.NET Framework 2.0

Other Versions

Indicates whether a type is visible to COM clients.

Namespace: System.Runtime.InteropServices
Assembly: mscorlib (in mscorlib.dll)

Syntax

C++

Copy

public static bool IsTypeVisibleFromCom (
	Type t
)

Copy

public static boolean IsTypeVisibleFromCom (
	Type t
)

JScript

Copy

public static function IsTypeVisibleFromCom (
	t : Type
) : boolean

Parameters

t: The Type to check for COM visibility.

Return Value

true if the type is visible to COM; otherwise, false.

Remarks

IsTypeVisibleFromCom is useful because it enables you to check for COM visibility in one step. Types that are not visible cannot be used from COM. A type is visible if the type is public and is not otherwise hidden with the System.Runtime.InteropServices.ComVisibleAttribute.

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.

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.

.NET Framework Security

SecurityPermission for permission to call unmanaged code. Associated enumeration: UnmanagedCodeSecurity action: LinkDemand

Platforms

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.

Version Information

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0

Reference

Marshal Class
Marshal Members
System.Runtime.InteropServices Namespace
ComVisibleAttribute Class

Did you find this helpful? Yes No

Not accurate

Not enough depth

Need more code examples

(1500 characters remaining)

Community Content Add

FAQ