IsNull<T> Class

  • Article

Inheritance Hierarchy

System.Object
  System.Activities.Activity
    System.Activities.ActivityWithResult
      System.Activities.Activity<Boolean>
        System.Activities.CodeActivity<Boolean>
          Microsoft.TeamFoundation.Build.Workflow.Expressions.IsNull<T>

Namespace:  Microsoft.TeamFoundation.Build.Workflow.Expressions
Assembly:  Microsoft.TeamFoundation.Build.Workflow (in Microsoft.TeamFoundation.Build.Workflow.dll)

Syntax

'Declaration
Public NotInheritable Class IsNull(Of T) _
    Inherits CodeActivity(Of Boolean)

public sealed class IsNull<T> : CodeActivity<bool>

generic<typename T>
public ref class IsNull sealed : public CodeActivity<bool>

[<Sealed>]
type IsNull<'T> =  
    class 
        inherit CodeActivity<bool>
    end

JScript does not support generic types or methods.

Type Parameters

  • T

The IsNull<T> type exposes the following members.

Constructors

  Name Description
Public method IsNull<T>

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Properties

  Name Description
Protected property CacheId Gets the identifier of the cache that is unique within the scope of the workflow definition. (Inherited from Activity.)
Public property DisplayName Gets or sets an optional friendly name that is used for debugging, validation, exception handling, and tracking. (Inherited from Activity.)
Public property Id Gets an identifier that is unique in the scope of the workflow definition. (Inherited from Activity.)
Public property Result Gets or sets the result argument for the Activity<TResult>. (Inherited from Activity<Boolean>.)
Public property ResultType When implemented in a derived class, gets the type of an activity OutArgument. (Inherited from ActivityWithResult.)
Public property Value

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Methods

  Name Description
Public method Equals Determines whether the specified object is equal to the current object. (Inherited from Object.)
Public method GetHashCode Serves as the default hash function. (Inherited from Object.)
Public method GetType Gets the Type of the current instance. (Inherited from Object.)
Public method ShouldSerializeDisplayName Indicates whether the DisplayName property should be serialized. (Inherited from Activity.)
Public method ToString Returns a String that contains the Id and DisplayName of the Activity. (Inherited from Activity.)

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Extension Methods

  Name Description
Public Extension Method GetAssemblyMetadataCollection (Defined by WorkflowHelpers.)

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Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

See Also

Reference

Microsoft.TeamFoundation.Build.Workflow.Expressions Namespace