LogProviderInfos.Contains 方法
Returns a Boolean that indicates if the items in the collection can be accessed using indexing without throwing an exception.
命名空間： Microsoft.SqlServer.Dts.Runtime
組件： Microsoft.SqlServer.ManagedDTS (在 Microsoft.SqlServer.ManagedDTS.dll 中)
語法
'宣告
Public Function Contains ( _
index As Object _
) As Boolean
'用途
Dim instance As LogProviderInfos
Dim index As Object
Dim returnValue As Boolean
returnValue = instance.Contains(index)
public bool Contains(
Object index
)
public:
bool Contains(
Object^ index
)
member Contains :
index:Object -> bool
public function Contains(
index : Object
) : boolean
參數
- index
型別：System.Object
The name, identity, ID, or index of the LogProviderInfo object to locate in the collection.
傳回值
型別：System.Boolean
A Boolean that indicates whether the collection can be accessed by name, identity, ID, or index. A value of true indicates that the collection can be accessed by using the syntax LogProviderInfos[index]. A value of false indicates that indexing cannot be used to retrieve items from the LogProviderInfos collection; using this property throws an exception.
範例
The following code sample uses the Contains method to determine if a log provider with the name "SSIS log provider for Text files" is in the collection. The method returns a Boolean.
using System;
using System.Collections.Generic;
using System.Text;
using Microsoft.SqlServer.Dts.Runtime;
namespace LogProvInfoProperties
{
class Program
{
static void Main(string[] args)
{
Application app = new Application();
LogProviderInfos infos = app.LogProviderInfos;
//See if the collection contains a log provider
// with the name "SSIS log provider for Text files".
Boolean logText = infos.Contains("SSIS log provider for Text files");
Console.WriteLine("Contains Text log provider? {0}", logText);
}
}
}
Imports System
Imports System.Collections.Generic
Imports System.Text
Imports Microsoft.SqlServer.Dts.Runtime
Namespace LogProvInfoProperties
Class Program
Shared Sub Main(ByVal args() As String)
Dim app As Application = New Application()
Dim infos As LogProviderInfos = app.LogProviderInfos
'See if the collection contains a log provider
' with the name "SSIS log provider for Text files".
Dim logText As Boolean = infos.Contains("SSIS log provider for Text files")
Console.WriteLine("Contains Text log provider? {0}", logText)
End Sub
End Class
End Namespace
Sample Output:
Contains Text log provider? True