LogProviders.Contains(Object) 方法

定义

命名空间:

Microsoft.SqlServer.Dts.Runtime

程序集:

Microsoft.SqlServer.ManagedDTS.dll

指定是否可以通过使用索引来检索 LogProviders 集合中的项而不引发异常。

public:
 bool Contains(System::Object ^ index);

public bool Contains (object index);

member this.Contains : obj -> bool

Public Function Contains (index As Object) As Boolean

参数

index

Object

一个对象，该对象包含集合中对象的数字索引或标识。

返回

Boolean

一个布尔值，指示是否可以使用索引检索项。 值为 true 表示可以使用语法 LogProviders[x] 而不引发异常。 false 值指示索引不能用于从 LogProviders 集合中检索项。

示例

下面的代码示例使用 Contains 方法来确定名称为“文本文件 SSIS 日志提供程序”的日志提供程序是否在集合中。 该方法返回一个 Boolean.

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

namespace LogProviders_Tests  
{  
    class Program  
    {  
        static void Main(string[] args)  
        {  
            // The package is one of the SSIS Samples.  
            string mySample = @"C:\Program Files\Microsoft SQL Server\100\Samples\Integration Services\Package Samples\CalculatedColumns Sample\CalculatedColumns\CalculatedColumns.dtsx";  

            // Create the Application, and load the sample.  
            Application app = new Application();  
            Package pkg = app.LoadPackage(mySample, null);  
            LogProviders logProvs = pkg.LogProviders;  

            // Search for the "SSIS log provider for Text files"  
            // in the collection  
            if (logProvs.Contains("SSIS log provider for Text files"))  
                Console.WriteLine("The collection contains {0} provider", logProvs[0].CreationName);  
            else  
                Console.WriteLine("The collection does not contain the SSIS log provider for Text files");  
        }  
    }  
}  

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

Namespace LogProviders_Tests  
    Class Program  
        Shared  Sub Main(ByVal args() As String)  
            ' The package is one of the SSIS Samples.  
            Dim mySample As String =  "C:\Program Files\Microsoft SQL Server\100\Samples\Integration Services\Package Samples\CalculatedColumns Sample\CalculatedColumns\CalculatedColumns.dtsx"   

            ' Create the Application, and load the sample.  
            Dim app As Application =  New Application()   
            Dim pkg As Package =  app.LoadPackage(mySample,Nothing)   
            Dim logProvs As LogProviders =  pkg.LogProviders   

            ' Search for the "SSIS log provider for Text files"  
            ' in the collection  
            If logProvs.Contains("SSIS log provider for Text files") Then  
                Console.WriteLine("The collection contains {0} provider", logProvs(0).CreationName)  
            Else   
                Console.WriteLine("The collection does not contain the SSIS log provider for Text files")  
            End If  
         End Sub  
    End Class  
End Namespace  

示例输出：

集合包含 DTS。LogProviderTextFile.1 提供程序

注解

如果使用该方法添加 Add 日志提供程序， Name 则日志提供程序默认为 GUID。