ForEachEnumeratorHost.SetExpression(String, String) 메서드

정의

네임스페이스:

Microsoft.SqlServer.Dts.Runtime

어셈블리:

Microsoft.SqlServer.ManagedDTS.dll

지정된 표현식을 속성에 할당합니다. null을 지정하여 속성에서 기존 표현식을 제거하세요.

public:
 virtual void SetExpression(System::String ^ propertyName, System::String ^ expression);

public void SetExpression(string propertyName, string expression);

abstract member SetExpression : string * string -> unit
override this.SetExpression : string * string -> unit

Public Sub SetExpression (propertyName As String, expression As String)

매개 변수

propertyName

String

표현식을 할당할 속성의 이름입니다.

expression

String

식입니다.

구현

SetExpression(String, String)

예제

다음 코드 예시는 .에 SMO 열거기를 호스팅합니다.ForEachEnumeratorHost 이 SetExpression 메서드를 사용하면, DelayValidation 속성을 수정한 후 표현식을 이 메서드로 GetExpression 검색합니다.

using System;  
using System.Collections.Generic;  
using System.Text;  
using Microsoft.SqlServer.Dts.Runtime;  

namespace Microsoft.SqlServer.SSIS.Sample  
{  
    internal class EnumType  
    {  
        public const string SMOEnum = "Foreach SMO Enumerator";  
    }  
    class SSISProgram  
    {  
        static void Main(string[] args)  
        {  
            Application app = new Application();  
            Package pkg = new Package();  
            ForEachEnumeratorInfos infos = app.ForEachEnumeratorInfos;  
            ForEachEnumeratorInfo info = null;  

            foreach (ForEachEnumeratorInfo enumInfo in infos)  
            {  
                // Uncomment the next line of you want to see all enumerators.  
                //Console.Write("Available enumerators: {0}\n", enumInfo.Name);  
                if (enumInfo.Name == EnumType.SMOEnum)  
                {  
                    // Set the ForEachEnumeratorInfo variable  
                    // to the SMO enumerator, and use it   
                    // later in the CreateNew method.  
                    info = enumInfo;  
                }  
            }  
            ForEachEnumeratorHost enumH = info.CreateNew();  
            Console.WriteLine();  
            // Show the description before it is modified.  
            Console.WriteLine("DelayValidation:  {0}", enumH.DelayValidation);  

            // Modify the Description using SetExpression.  
            //String myExpression = "\"My Description for SMO enumerator\"";  
            String myExpression = "true";  
            enumH.SetExpression("DelayValidation", myExpression);  

            DTSExecResult result = pkg.Validate(null, null, null, null);  

            // Review the new value and expression.  
            String newExpr = enumH.GetExpression("DelayValidation");  
            Console.WriteLine("New DelayValidation: {0}", enumH.DelayValidation);  
            Console.WriteLine("Expression:      {0}", newExpr);  
        }  
    }  
}  

Imports System  
Imports System.Collections.Generic  
Imports System.Text  
Imports Microsoft.SqlServer.Dts.Runtime  

Friend Class EnumType  
    Public Const SMOEnum As String = "Foreach SMO Enumerator"  
End Class 'EnumType  

Class SSISProgram  

    Shared Sub Main(ByVal args() As String)   
        Dim app As New Application()  
        Dim pkg As New Package()  
        Dim infos As ForEachEnumeratorInfos = app.ForEachEnumeratorInfos  
        Dim info As ForEachEnumeratorInfo = Nothing  

        Dim enumInfo As ForEachEnumeratorInfo  
        For Each enumInfo In  infos  
            ' Uncomment the next line of you want to see all enumerators.  
            'Console.Write("Available enumerators: {0}\n", enumInfo.Name);  
            If enumInfo.Name = EnumType.SMOEnum Then  
                ' Set the ForEachEnumeratorInfo variable  
                ' to the SMO enumerator, and use it   
                ' later in the CreateNew method.  
                info = enumInfo  
            End If  
        Next enumInfo  
        Dim enumH As ForEachEnumeratorHost = info.CreateNew()  
        Console.WriteLine()  
        ' Show the description before it is modified.  
        Console.WriteLine("DelayValidation:  {0}", enumH.DelayValidation)  

        ' Modify the Description using SetExpression.  
        'String myExpression = "\"My Description for SMO enumerator\"";  
        Dim myExpression As String = "true"  
        enumH.SetExpression("DelayValidation", myExpression)  

        Dim result As DTSExecResult = pkg.Validate(Nothing, Nothing, Nothing, Nothing)  

        ' Review the new value and expression.  
        Dim newExpr As String = enumH.GetExpression("DelayValidation")  
        Console.WriteLine("New DelayValidation: {0}", enumH.DelayValidation)  
        Console.WriteLine("Expression:      {0}", newExpr)  

    End Sub 'Main  
End Class 'SSISProgram  

샘플 출력:

지연 검증: 잘못된

새로운 지연 검증: 거짓

표현식: 참