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System
Action Delegate
Action(T) Delegate
Action(T1, T2) Delegate
Action(T1, T2, T3) Delegate
Action(T1, T2, T3, T4) Delegate
Action(T1, T2, T3, T4, T5) Delegate
Action(T1, T2, T3, T4, T5, T6) Delegate
Action(T1, T2, T3, T4, T5, T6, T7) Delegate
Action(T1, T2, T3, T4, T5, T6, T7, T8) Delegate
Activator Class
ArgumentException Class
ArgumentNullException Class
Array Class
Attribute Class
BitConverter Class
Boolean Structure
Buffer Class
Byte Structure
Char Structure
Console Class
Convert Class
DateTime Structure
Decimal Structure
Delegate Class
Double Structure
Enum Class
Environment Class
EventArgs Class
EventHandler Delegate
EventHandler(TEventArgs) Delegate
Exception Class
FormatException Class
Func(TResult) Delegate
Func(T, TResult) Delegate
Func(T1, T2, TResult) Delegate
Func(T1, T2, T3, TResult) Delegate
Func(T1, T2, T3, T4, TResult) Delegate
Func(T1, T2, T3, T4, T5, TResult) Delegate
Func(T1, T2, T3, T4, T5, T6, TResult) Delegate
Func(T1, T2, T3, T4, T5, T6, T7, TResult) Delegate
Func(T1, T2, T3, T4, T5, T6, T7, T8, TResult) Delegate
GC Class
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INTERNAL_WebRequestHelper Class
IntPtr Structure
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Math Class
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Nullable Class
Nullable(T) Structure
Object Class
Predicate(T) Delegate
Random Class
SByte Structure
Single Structure
String Class
SystemException Class
TimeSpan Structure
Tuple2 Class
Tuple2(T1, T2) Class
Tuple2(T1, T2, T3) Class
Tuple2(T1, T2, T3, T4) Class
Type Class
UInt16 Structure
UInt32 Structure
UInt64 Structure
UIntPtr Structure
Uri Class
UriKind Enumeration
WeakReference Class
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FuncT, TResult Delegate
Encapsulates a method that has one parameter and returns a value of the type specified by the TResult parameter.

Namespace: System
Assembly: mscorlib (in mscorlib.dll) Version: 4.0.0.0
Syntax
C#
Copy
public delegate TResult Func<in T, out TResult>(
	T arg
)

Parameters

arg
Type: T
The parameter of the method that this delegate encapsulates.

Type Parameters

T
The type of the 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.

Return Value

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