MethodImplAttribute Class
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Specifies the details of how a method is implemented. This class cannot be inherited.
Assembly: mscorlib (in mscorlib.dll)
The MethodImplAttribute type exposes the following members.
| Name | Description | |
|---|---|---|
 | MethodImplAttribute() | Initializes a new instance of the MethodImplAttribute class. |
| MethodImplAttribute(Int16) | Initializes a new instance of the MethodImplAttribute class with the specified MethodImplOptions value. |
| MethodImplAttribute(MethodImplOptions) | Initializes a new instance of the MethodImplAttribute class with the specified MethodImplOptions value. |
| Name | Description | |
|---|---|---|
| Equals | Infrastructure. Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.) |
 | 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.) |
| Name | Description | |
|---|---|---|
 | MethodCodeType | A MethodCodeType value indicating what kind of implementation is provided for this method. |
You can apply this attribute to methods or constructors.
This attribute lets you customize the configuration of the method or constructor to which it applies by supplying a MethodImplOptions value to its class constructor. The members of the MethodImplOptions enumeration correspond to bit fields in the CorMethodImpl metadata table. This means that information on the attribute cannot be retrieved at run time by calling the MemberInfo::GetCustomAttributes method; instead, it is retrieved by calling either the MethodInfo.GetMethodImplementationFlags or the ConstructorInfo.GetMethodImplementationFlags method.
The following example applies the MethodImplAttribute to the GetCalendarName method to ensure that it is not inlined at run time by the just-in-time (JIT) compiler.
The following example then calls the MethodInfo.GetMethodImplementationFlags method to determine which flags are set for the GetCalendarName method. It also demonstrates that this information is not retrieved by the MemberInfo::GetCustomAttributes method.