EdmFunctionAttribute Class
An attribute that, when applied to a method, indicates that the method is a proxy for a function in the conceptual model or storage model.
Assembly: System.Data.Entity (in System.Data.Entity.dll)
| Name | Description | |
|---|---|---|
![]() | EdmFunctionAttribute(String^, String^) | Initializes a new instance of the EdmFunctionAttribute class. |
| Name | Description | |
|---|---|---|
![]() | FunctionName | The name of the mapped-to function. |
![]() | NamespaceName | The namespace of the mapped-to function. |
![]() | TypeId |
| Name | Description | |
|---|---|---|
![]() | Equals(Object^) | This API supports the product infrastructure and is not intended to be used directly from your code. Returns a value that indicates whether this instance is equal to a specified object.(Inherited from Attribute.) |
![]() | GetHashCode() | Returns the hash code for this instance.(Inherited from Attribute.) |
![]() | GetType() | |
![]() | IsDefaultAttribute() | When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class.(Inherited from Attribute.) |
![]() | Match(Object^) | When overridden in a derived class, returns a value that indicates whether this instance equals a specified object.(Inherited from Attribute.) |
![]() | ToString() | Returns a string that represents the current object.(Inherited from Object.) |
| Name | Description | |
|---|---|---|
![]() ![]() | _Attribute::GetIDsOfNames(Guid%, IntPtr, UInt32, UInt32, IntPtr) | Maps a set of names to a corresponding set of dispatch identifiers.(Inherited from Attribute.) |
![]() ![]() | _Attribute::GetTypeInfo(UInt32, UInt32, IntPtr) | Retrieves the type information for an object, which can be used to get the type information for an interface.(Inherited from Attribute.) |
![]() ![]() | _Attribute::GetTypeInfoCount(UInt32%) | Retrieves the number of type information interfaces that an object provides (either 0 or 1).(Inherited from Attribute.) |
![]() ![]() | _Attribute::Invoke(UInt32, Guid%, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr) | Provides access to properties and methods exposed by an object.(Inherited from Attribute.) |
An EdmFunctionAttribute links a common language runtime (CLR) method to another function. For example, the attribute can be used to map a CLR method to a function that is exposed by the storage provider, to a user-defined function in the database, or to a user-defined function in the conceptual model. Methods that have this attribute can be called from LINQ to Entities queries.
To use an EdmFunctionAttribute to map a CLR method to a function, the following must be true:
The return type of the CLR method must be compatible with the return type of the mapped-to function.
The argument types of the CLR method must be compatible with the argument types of the mapped-to function.
For information about compatible types, see Conceptual Model Types (CSDL).
Available since 4.0
Any public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.



