DllImportAttribute Class
Microsoft Silverlight will reach end of support after October 2021. Learn more.
This API supports the .NET Framework infrastructure and is not intended to be used directly from your code.
Indicates that the attributed method is exposed by an unmanaged dynamic-link library (DLL) as a static entry point.
Inheritance Hierarchy
System.Object
System.Attribute
System.Runtime.InteropServices.DllImportAttribute
Namespace: System.Runtime.InteropServices
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
<AttributeUsageAttribute(AttributeTargets.Method, Inherited := False)> _
<ComVisibleAttribute(True)> _
Public NotInheritable Class DllImportAttribute _
Inherits Attribute
[AttributeUsageAttribute(AttributeTargets.Method, Inherited = false)]
[ComVisibleAttribute(true)]
public sealed class DllImportAttribute : Attribute
The DllImportAttribute type exposes the following members.
Constructors
| Name | Description | |
|---|---|---|
.gif "Public method") .gif "Supported by Silverlight for Windows Phone") .gif "Supported by Xbox 360") |
DllImportAttribute | Initializes a new instance of the DllImportAttribute class with the name of the DLL containing the method to import. |
Top
Properties
| Name | Description | |
|---|---|---|
.gif "Public property") |
Value | Infrastructure. Gets the name of the DLL file that contains the entry point. |
Top
Methods
| Name | Description | |
|---|---|---|
|
Equals | Infrastructure. Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.) |
.gif "Protected method") |
Finalize | Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.) |
|
GetHashCode | Returns the hash code for this instance. (Inherited from Attribute.) |
|
GetType | Gets the Type of the current instance. (Inherited from Object.) |
|
Match | When overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.) |
|
MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
|
ToString | Returns a string that represents the current object. (Inherited from Object.) |
Top
Fields
| Name | Description | |
|---|---|---|
.gif "Public field") |
BestFitMapping | Enables or disables best-fit mapping behavior when converting Unicode characters to ANSI characters. |
|
CallingConvention | Indicates the calling convention of an entry point. |
|
CharSet | Indicates how to marshal string parameters to the method and controls name mangling. |
|
EntryPoint | Indicates the name or ordinal of the DLL entry point to be called. |
|
ExactSpelling | Controls whether the DllImportAttribute.CharSet field causes the common language runtime to search an unmanaged DLL for entry-point names other than the one specified. |
|
PreserveSig | Indicates whether unmanaged methods that have HRESULT or retval return values are directly translated or whether HRESULT or retval return values are automatically converted to exceptions. |
|
SetLastError | Indicates whether the callee calls the SetLastError Win32 API function before returning from the attributed method. |
Top
Version Information
Silverlight
Supported in: 5, 4, 3
Silverlight for Windows Phone
Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0
XNA Framework
Supported in: Xbox 360, Windows Phone OS 7.0
Platforms
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.
Thread Safety
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.