• Articolo

Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, TResult> Delegate

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Encapsulates a method that has nine parameters and returns a value of the type specified by the TResult parameter.

Namespace:  System
Assembly:  System.Core (in System.Core.dll)

Syntax

'Declaration
Public Delegate Function Func(Of In T1, In T2, In T3, In T4, In T5, In T6, In T7, In T8, In T9, Out TResult) ( _
    arg1 As T1, _
    arg2 As T2, _
    arg3 As T3, _
    arg4 As T4, _
    arg5 As T5, _
    arg6 As T6, _
    arg7 As T7, _
    arg8 As T8, _
    arg9 As T9 _
) As TResult

public delegate TResult Func<in T1, in T2, in T3, in T4, in T5, in T6, in T7, in T8, in T9, out TResult>(
    T1 arg1,
    T2 arg2,
    T3 arg3,
    T4 arg4,
    T5 arg5,
    T6 arg6,
    T7 arg7,
    T8 arg8,
    T9 arg9
)

Type Parameters

  • inT1
    The type of the first parameter of the method that this delegate encapsulates.

    This type parameter is contravariant. That is, you can use either the type you specified or any type that is less derived. For more information about covariance and contravariance, see 2678dc63-c7f9-4590-9ddc-0a4df684d42e.

  • inT2
    The type of the second parameter of the method that this delegate encapsulates.
  • inT3
    The type of the third parameter of the method that this delegate encapsulates.
  • inT4
    The type of the fourth parameter of the method that this delegate encapsulates.
  • inT5
    The type of the fifth parameter of the method that this delegate encapsulates.
  • inT6
    The type of the sixth parameter of the method that this delegate encapsulates.
  • inT7
    The type of the seventh parameter of the method that this delegate encapsulates.
  • inT8
    The type of the eighth parameter of the method that this delegate encapsulates.
  • inT9
    The type of the ninth parameter of the method that this delegate encapsulates.

  • outTResult
    The type of the return value of the method that this delegate encapsulates.

    This type parameter is covariant. That is, you can use either the type you specified or any type that is more derived. For more information about covariance and contravariance, see 2678dc63-c7f9-4590-9ddc-0a4df684d42e.

Parameters

  • arg1
    Type: T1
    The first parameter of the method that this delegate encapsulates.
  • arg2
    Type: T2
    The second parameter of the method that this delegate encapsulates.
  • arg3
    Type: T3
    The third parameter of the method that this delegate encapsulates.
  • arg4
    Type: T4
    The fourth parameter of the method that this delegate encapsulates.
  • arg5
    Type: T5
    The fifth parameter of the method that this delegate encapsulates.
  • arg6
    Type: T6
    The sixth parameter of the method that this delegate encapsulates.
  • arg7
    Type: T7
    The seventh parameter of the method that this delegate encapsulates.
  • arg8
    Type: T8
    The eighth parameter of the method that this delegate encapsulates.
  • arg9
    Type: T9
    The ninth parameter of the method that this delegate encapsulates.

Return Value

Type: TResult
The return value of the method that this delegate encapsulates.

Remarks

You can use this delegate to represent a method that can be passed as a parameter without explicitly declaring a custom delegate. The encapsulated method must correspond to the method signature that is defined by this delegate. This means that the encapsulated method must have nine parameters, each of which is passed to it by value, and that it must return a value.

NoteNote:

To reference a method that has nine parameters and returns void (or in Visual Basic, that is declared as a Sub rather than as a Function), use the generic Action<T1, T2, T3, T4, T5, T6, T7, T8, T9> delegate instead.

You can also use the Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, TResult> delegate with anonymous methods and lambda expressions.

The underlying type of a lambda expression is one of the generic Func delegates. This makes it possible to pass a lambda expression as a parameter without explicitly assigning it to a delegate.

Version Information

Silverlight

Supported in: 5, 4

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.