UnionAll Method

DbExpressionBuilder.UnionAll Method (DbExpression, DbExpression)

.NET Framework (current version)
 

Creates a new DbUnionAllExpression that computes the union of the left and right set arguments and does not remove duplicates.

Namespace:   System.Data.Common.CommandTrees.ExpressionBuilder
Assembly:  System.Data.Entity (in System.Data.Entity.dll)

public static DbUnionAllExpression UnionAll(
	this DbExpression left,
	DbExpression right
)

Parameters

left
Type: System.Data.Common.CommandTrees.DbExpression

An expression that defines the left set argument.

right
Type: System.Data.Common.CommandTrees.DbExpression

An expression that defines the right set argument.

Return Value

Type: System.Data.Common.CommandTrees.DbUnionAllExpression

A new DbUnionAllExpression that union, including duplicates, of the the left and right arguments.

Exception Condition
ArgumentNullException

left or right is null.

ArgumentException

No common collection result type with an equality-comparable element type exists between left and right.

.NET Framework
Available since 4.5
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