DtsForEachEnumeratorAttribute-Klasse

Supplies design-time information about a ForEachEnumerator object. This class cannot be inherited.

Vererbungshierarchie

System. . :: . .Object
  System. . :: . .Attribute
    Microsoft.SqlServer.Dts.Runtime.Localization. . :: . .DtsLocalizableAttribute
      Microsoft.SqlServer.Dts.Runtime..::..DtsForEachEnumeratorAttribute

Namespace:  Microsoft.SqlServer.Dts.Runtime
Assembly:  Microsoft.SqlServer.ManagedDTS (in Microsoft.SqlServer.ManagedDTS.dll)

Syntax

'Declaration
<AttributeUsageAttribute(AttributeTargets.Class, Inherited := False, AllowMultiple := False)> _
Public NotInheritable Class DtsForEachEnumeratorAttribute _
    Inherits DtsLocalizableAttribute
'Usage
Dim instance As DtsForEachEnumeratorAttribute

[AttributeUsageAttribute(AttributeTargets.Class, Inherited = false, AllowMultiple = false)]
public sealed class DtsForEachEnumeratorAttribute : DtsLocalizableAttribute

[AttributeUsageAttribute(AttributeTargets::Class, Inherited = false, AllowMultiple = false)]
public ref class DtsForEachEnumeratorAttribute sealed : public DtsLocalizableAttribute

[<SealedAttribute>]
[<AttributeUsageAttribute(AttributeTargets.Class, Inherited = false, AllowMultiple = false)>]
type DtsForEachEnumeratorAttribute =  
    class
        inherit DtsLocalizableAttribute
    end

public final class DtsForEachEnumeratorAttribute extends DtsLocalizableAttribute

Der DtsForEachEnumeratorAttribute-Typ macht folgende Elemente verfügbar.

Konstruktoren

	Name	Beschreibung
	DtsForEachEnumeratorAttribute	Initializes a new instance of the DtsForEachEnumeratorAttribute.

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Eigenschaften

	Name	Beschreibung
	Description	Infrastruktur (Geerbt von DtsLocalizableAttribute.)
	DisplayName	Infrastruktur (Geerbt von DtsLocalizableAttribute.)
	ForEachEnumeratorContact	Gets or sets the contact information for the Foreach enumerator object.
	LocalizationType	Infrastruktur (Geerbt von DtsLocalizableAttribute.)
	TypeId	(Geerbt von Attribute.)
	UITypeName	Gets or sets the user interface for the Foreach enumerator object.

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Methoden

	Name	Beschreibung
	Equals	(Geerbt von Attribute.)
	Finalize	(Geerbt von Object.)
	GetHashCode	(Geerbt von Attribute.)
	GetType	(Geerbt von Object.)
	IsDefaultAttribute	(Geerbt von Attribute.)
	Match	(Geerbt von Attribute.)
	MemberwiseClone	(Geerbt von Object.)
	ToString	(Geerbt von Object.)

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Explizite Schnittstellenimplementierungen

	Name	Beschreibung
	_Attribute. . :: . .GetIDsOfNames	(Geerbt von Attribute.)
	_Attribute. . :: . .GetTypeInfo	(Geerbt von Attribute.)
	_Attribute. . :: . .GetTypeInfoCount	(Geerbt von Attribute.)
	_Attribute. . :: . .Invoke	(Geerbt von Attribute.)

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Hinweise

This attribute is applied to all managed Foreach enumerator classes and identifies the class as a managed Foreach enumerator to the SQL Server (SSIS) run-time engine. This attribute provides information through its properties to control how the designer displays and interacts with the object. Because all managed enumerators derive from the ForEachEnumerator base class, the first step when creating a custom enumerator is to create a class library project and inherit from the base class. Next, apply the DtsForEachEnumeratorAttribute to the class. This attribute provides the name, description, and user interface design-time information to the designer. The UITypeName property identifies the Type that implements the user interface for the enumerator that is displayed in the ForEachLoop editor. The DisplayName property is displayed in the Toolbox in the SQL Server Business Intelligence Development Studio.

For more information about applying attributes to a class, see "Applying Attributes" in the .NET Framework Developer's Guide.

The attribute is formatted as a comma-delimited string, which can contain the following elements from the Attributes class, in addition to the other attributes declared on the DtsForEachEnumeratorAttribute, such as the UITypeName and the ForEachEnumeratorContact:

• Type name

• Assembly name

• File version

• Culture

• Public key token

The following string gives an example of how the string is formatted.

[DtsForEachEnumerator(DisplayName="MyEnumerator",UITypeName="MyNamespace.MyEnumeratorClassName,MyAssemblyName,Version=1.0.0.0,Culture=neutral,PublicKeyToken=<value>")]

You can find the values of the Culture and PublicKeyToken parameters in your assembly by examining the properties of the assembly in the global assembly cache (GAC).

Beispiele

The following code sample shows the attribute applied to a new class, with several properties defined, including the DisplayName, Description, ForEachEnumeratorContact, and UITypeName.

using System;
using Microsoft.SqlServer.Dts.Runtime;

namespace Microsoft.Samples.SqlServer.Dts
{
// This attribute marks the class as a managed ForEachEnumerator.
    [DtsForEachEnumerator(DisplayName = "MyEnumerator",
      Description="A managed enumerator",
      UITypeName="<FullyQualifiedTypeName>",
      ForEachEnumeratorContact="Name of company to contact")]
    public class MyEnumerator : ForEachEnumerator
    {
        // Insert your enumerator code here.
    }
}

Imports System
Imports Microsoft.SqlServer.Dts.Runtime

Namespace Microsoft.Samples.SqlServer.Dts
  ' This attribute marks the class as a managed ForEachEnumerator.
  <DtsForEachEnumerator(DisplayName:="MyEnumerator", _
    Description:="A managed enumerator", _
    UITypeName:="<FullyQualifiedTypeName>", _
    ForEachEnumeratorContact:="Name of company to contact")> _
  Public Class MyEnumerator
    Inherits ForEachEnumerator
    ' Insert your enumerator code here.
  End Class
End Namespace

Threadsicherheit

Alle öffentlichen static (Shared in Visual Basic)-Elemente dieses Typs sind Threadsicher. Für Instanzelemente wird die Threadsicherheit nicht gewährleistet.

Siehe auch

Verweis

Microsoft.SqlServer.Dts.Runtime-Namespace