DbExpressionBuilder.IsNull Method (DbExpression)

.NET Framework (current version)
 
System_CAPS_noteNote

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Creates a new DbIsNullExpression that determines whether the specified argument is null.

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

public static DbIsNullExpression IsNull(
	this DbExpression argument
)

Parameters

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

An expression that specifies the argument.

Return Value

Type: System.Data.Common.CommandTrees.DbIsNullExpression

A new DbIsNullExpression with the specified argument.

Exception Condition
ArgumentNullException

argument is null.

ArgumentException

argument has a collection result type.

.NET Framework
Available since 4.5
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