Expression.Power Method (Expression, Expression, MethodInfo)
Creates a BinaryExpression that represents raising a number to a power. The implementing method can be specified.
Assembly: System.Core (in System.Core.dll)
public static BinaryExpression Power( Expression left, Expression right, MethodInfo method )
left or right is null.
method is not null and the method it represents returns void, is not static (Shared in Visual Basic), or does not take exactly two arguments.
method is null and the exponentiation operator is not defined for left.Type and right.Type.
method is null and left.Type and/or right.Type are not Double.
The resulting BinaryExpression has the Method property set to the implementing method. The Type property is set to the type of the node. If the node is lifted, the IsLifted and IsLiftedToNull properties are both true. Otherwise, they are false. The Conversion property is null.
The following information describes the implementing method, the node type, and whether a node is lifted.
The following rules determine the implementing method for the operation:
If method is not null and it represents a non-void, static (Shared in Visual Basic) method that takes two arguments, it is the implementing method.
Otherwise, if the Type property of either left or right represents a user-defined type that overloads the exponentiation operator, the MethodInfo that represents that method is the implementing method.
Node Type and Lifted versus Non-Lifted
If left.Type and right.Type are assignable to the corresponding argument types of the implementing method, the node is not lifted. The type of the node is the return type of the implementing method.
If the following two conditions are satisfied, the node is lifted and the type of the node is the nullable type that corresponds to the return type of the implementing method:
left.Type and right.Type are both value types of which at least one is nullable and the corresponding non-nullable types are equal to the corresponding argument types of the implementing method.
The return type of the implementing method is a non-nullable value type.
Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.