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DbExpressionBuilder.FullOuterJoin Method (DbExpression, DbExpression, Func<DbExpression, DbExpression, DbExpression>)

.NET Framework 4.5

Creates a new DbJoinExpression that joins the sets specified by the left and right expressions, on the specified join condition, using FullOuterJoin as the DbExpressionKind.

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

public static DbJoinExpression FullOuterJoin(
	this DbExpression left,
	DbExpression right,
	Func<DbExpression, DbExpression, DbExpression> joinCondition
)

Parameters

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

A DbExpression that specifies the left set argument.

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

A DbExpression that specifies the right set argument.

joinCondition
Type: System.Func<DbExpression, DbExpression, DbExpression>

A method representing the condition on which to join. This method must produce an expression with a Boolean result type that provides the logic of the join condition.

Return Value

Type: System.Data.Common.CommandTrees.DbJoinExpression
A new DbJoinExpression, with an DbExpressionKind of FullOuterJoin, that represents the full outer join operation applied to the left and right input sets under the given join condition.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type DbExpression. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

ExceptionCondition
ArgumentNullException

left, right or joinCondition is null.

ArgumentException

left or right does not have a collection result type.

ArgumentNullException

The expression produced by joinCondition is null.

ArgumentException

The expression produced by joinCondition does not have a Boolean result type.

.NET Framework

Supported in: 4.5.3
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