Expression.Coalesce Method (Expression, Expression)
Creates a BinaryExpression that represents a coalescing operation.
Assembly: System.Core (in System.Core.dll)
The Method property of the resulting BinaryExpression is null and both IsLifted and IsLiftedToNull are set to false. The Type property is equal to the result type of the coalescing operation. The Conversion property is null.
The following rules determine the result type:
If left.Type represents a nullable type and right.Type is implicitly convertible to the corresponding non-nullable type, the result type is the non-nullable equivalent of left.Type.
Otherwise, if right.Type is implicitly convertible to left.Type, the result type is left.Type.
Otherwise, if the non-nullable equivalent of left.Type is implicitly convertible to right.Type, the result type is right.Type.
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.