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

Definition

Namespace:

System

Assembly:

System.Runtime.dll

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

generic <typename T1, typename T2, typename T3, typename T4, typename T5, typename T6, typename T7, typename T8, typename TResult>
public delegate TResult Func(T1 arg1, T2 arg2, T3 arg3, T4 arg4, T5 arg5, T6 arg6, T7 arg7, T8 arg8);

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

type Func<'T1, 'T2, 'T3, 'T4, 'T5, 'T6, 'T7, 'T8, 'Result> = delegate of 'T1 * 'T2 * 'T3 * 'T4 * 'T5 * 'T6 * 'T7 * 'T8 -> 'Result

Public Delegate Function Func(Of In T1, In T2, In T3, In T4, In T5, In T6, In T7, In T8, 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) As TResult 

Type Parameters

T1

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 Covariance and Contravariance in Generics.

T2

The type of the second 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 Covariance and Contravariance in Generics.

T3

The type of the third 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 Covariance and Contravariance in Generics.

T4

The type of the fourth 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 Covariance and Contravariance in Generics.

T5

The type of the fifth 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 Covariance and Contravariance in Generics.

T6

The type of the sixth 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 Covariance and Contravariance in Generics.

T7

The type of the seventh 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 Covariance and Contravariance in Generics.

T8

The type of the eighth 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 Covariance and Contravariance in Generics.

TResult

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 Covariance and Contravariance in Generics.

Parameters

arg1

T1

The first parameter of the method that this delegate encapsulates.

arg2

T2

The second parameter of the method that this delegate encapsulates.

arg3

T3

The third parameter of the method that this delegate encapsulates.

arg4

T4

The fourth parameter of the method that this delegate encapsulates.

arg5

T5

The fifth parameter of the method that this delegate encapsulates.

arg6

T6

The sixth parameter of the method that this delegate encapsulates.

arg7

T7

The seventh parameter of the method that this delegate encapsulates.

arg8

T8

The eighth parameter of the method that this delegate encapsulates.

Return Value

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 eight parameters, each of which is passed to it by value, and that it must return a value.

Note

To reference a method that has eight 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> delegate instead.

You can also use the Func<T1,T2,T3,T4,T5,T6,T7,T8,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.

Extension Methods

GetMethodInfo(Delegate)

Gets an object that represents the method represented by the specified delegate.

See also

• Action<T1,T2,T3,T4,T5,T6,T7,T8>