Поделиться через

  • Статья

Метод Contains

Returns a Boolean that indicates whether the items in the collection can be accessed by an index without throwing an exception.

Пространство имен:  Microsoft.SqlServer.Dts.Runtime
Сборка:  Microsoft.SqlServer.ManagedDTS (в Microsoft.SqlServer.ManagedDTS.dll)

Синтаксис

'Декларация
Public Function Contains ( _
    index As Object _
) As Boolean
'Применение
Dim instance As Configurations
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

Параметры

Возвращаемое значение

Тип: 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 Configurations[index]. A value of false indicates that indexing cannot be used to retrieve items from the Configurations collection; using this property throws an exception.

Примеры

The following code example uses the Contains method to see if item syntax is available.

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

namespace Configurations_API
{
    class Program
    {
        static void Main(string[] args)
        {
            Package p = new Package();
            
            Configuration conf1 = p.Configurations.Add();
            conf1.ConfigurationString = "Conf1 Configuration String";
            conf1.ConfigurationType = DTSConfigurationType.EnvVariable;
            conf1.Description = "Some description for Conf1 configuration";
            conf1.Name = "Conf1";
            conf1.PackagePath = "A Variable Name in configuration Conf1";

            Configuration conf2 = p.Configurations.Add();
            conf2.ConfigurationString = "Conf2 Configuration String";
            conf2.ConfigurationType = DTSConfigurationType.ConfigFile;
            conf2.Description = "Some description for Conf2 configuration";
            conf2.Name = "Conf2";
            conf2.PackagePath = "A Variable Name in configuration Conf2";

            Configuration conf3 = p.Configurations.Add();
            conf3.ConfigurationString = "Conf3 Configuration String2";
            conf3.ConfigurationType = DTSConfigurationType.RegEntry;
            conf3.Description = "Conf3 description for Conf3 configuration2";
            conf3.Name = "Conf3";
            conf3.PackagePath = "A Variable Name in configuration Conf3";

            // Use Contains to see if item syntax is available.
            Boolean configContains = p.Configurations.Contains("Conf3");

            if (configContains)
            {
                // Use the item syntax of Configurations[x].
                String myName = p.Configurations[0].Name;
                Console.WriteLine("Name of configuration at position 0 is {0}", myName);
            }
            else
            {
                Console.WriteLine("Contains returned {0}", configContains);
            }
            Console.WriteLine();
        }
    }
}

Imports System
Imports System.Collections.Generic
Imports System.Text
Imports Microsoft.SqlServer.Dts.Runtime
 
Namespace Configurations_API
    Class Program
        Shared  Sub Main(ByVal args() As String)
            Dim p As Package =  New Package() 
 
            Dim conf1 As Configuration =  p.Configurations.Add() 
            conf1.ConfigurationString = "Conf1 Configuration String"
            conf1.ConfigurationType = DTSConfigurationType.EnvVariable
            conf1.Description = "Some description for Conf1 configuration"
            conf1.Name = "Conf1"
            conf1.PackagePath = "A Variable Name in configuration Conf1"
 
            Dim conf2 As Configuration =  p.Configurations.Add() 
            conf2.ConfigurationString = "Conf2 Configuration String"
            conf2.ConfigurationType = DTSConfigurationType.ConfigFile
            conf2.Description = "Some description for Conf2 configuration"
            conf2.Name = "Conf2"
            conf2.PackagePath = "A Variable Name in configuration Conf2"
 
            Dim conf3 As Configuration =  p.Configurations.Add() 
            conf3.ConfigurationString = "Conf3 Configuration String2"
            conf3.ConfigurationType = DTSConfigurationType.RegEnTry
            conf3.Description = "Conf3 description for Conf3 configuration2"
            conf3.Name = "Conf3"
            conf3.PackagePath = "A Variable Name in configuration Conf3"
 
            ' Use Contains to see if item syntax is available.
            Dim configContains As Boolean =  p.Configurations.Contains("Conf3") 
 
            If configContains = True Then
                ' Use the item syntax of Configurations[x].
                Dim myName As String =  p.Configurations(0).Name 
                Console.WriteLine("Name of configuration at position 0 is {0}", myName)
            Else 
                Console.WriteLine("Contains returned {0}", configContains)
            End If

            Console.WriteLine()
        End Sub
    End Class
End Namespace

Sample Output:

Name of configuration at position 0 is Conf1