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

Encapsulates a method that has nine parameters and does not return a value.

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

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

Type Parameters

in 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.

in T2

The type of the second parameter of the method that this delegate encapsulates.

in T3

The type of the third parameter of the method that this delegate encapsulates.

in T4

The type of the fourth parameter of the method that this delegate encapsulates.

in T5

The type of the fifth parameter of the method that this delegate encapsulates.

in T6

The type of the sixth parameter of the method that this delegate encapsulates.

in T7

The type of the seventh parameter of the method that this delegate encapsulates.

in T8

The type of the eighth parameter of the method that this delegate encapsulates.

in T9

The type of the ninth parameter of the method that this delegate encapsulates.

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.

You can use the Action<T1, T2, T3, T4, T5, T6, T7, T8, T9> delegate to pass a method 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 that are all passed to it by value, and it must not return a value. (In C#, the method must return void. In Visual Basic, it must be defined by the SubEnd Sub construct. It can also be a method that returns a value that is ignored.) Typically, such a method is used to perform an operation.

NoteNote

To reference a method that has nine parameters and returns a value, use the generic Func<T1, T2, T3, T4, T5, T6, T7, T8, T9, TResult> delegate instead.

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

.NET Framework

Supported in: 4

.NET Framework Client Profile

Supported in: 4

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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