DtsForEachEnumeratorAttribute Class

Reference

Definition

Namespace:: Microsoft.SqlServer.Dts.Runtime

Assembly:: Microsoft.SqlServer.ManagedDTS.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

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

public ref class DtsForEachEnumeratorAttribute sealed : Microsoft::SqlServer::Dts::Runtime::Localization::DtsLocalizableAttribute

[System.AttributeUsage(System.AttributeTargets.Class, AllowMultiple=false, Inherited=false)]
public sealed class DtsForEachEnumeratorAttribute : Microsoft.SqlServer.Dts.Runtime.Localization.DtsLocalizableAttribute

[<System.AttributeUsage(System.AttributeTargets.Class, AllowMultiple=false, Inherited=false)>]
type DtsForEachEnumeratorAttribute = class
    inherit DtsLocalizableAttribute

Public NotInheritable Class DtsForEachEnumeratorAttribute
Inherits DtsLocalizableAttribute

Inheritance: Attribute

DtsLocalizableAttribute
DtsForEachEnumeratorAttribute

Attributes: AttributeUsageAttribute

Examples

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

Remarks

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 SQL Server Data Tools (SSDT).

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="1.00.000.00",Culture="neutral",PublicKeyToken="")]

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).

Constructors

DtsForEachEnumeratorAttribute()

Initializes a new instance of the DtsForEachEnumeratorAttribute.

Properties

Description	Gets or sets the description of the DtsLocalizableAttribute. (Inherited from DtsLocalizableAttribute)
DisplayName	Gets or sets the display name of the DtsLocalizableAttribute. (Inherited from DtsLocalizableAttribute)
ForEachEnumeratorContact	Gets or sets the contact information for the Foreach enumerator object.
LocalizationType	Gets or sets the class that supplies values for the DtsLocalizableAttribute. (Inherited from DtsLocalizableAttribute)
UITypeName	Gets or sets the user interface for the Foreach enumerator object.

Applies to

共用方式為