DbConnectionStringBuilder.EquivalentTo(DbConnectionStringBuilder) Methode

Definition

Vergleicht die Verbindungsinformationen in diesem DbConnectionStringBuilder-Objekt mit den Verbindungsinformationen im angegebenen Objekt.Compares the connection information in this DbConnectionStringBuilder object with the connection information in the supplied object.

public:
 virtual bool EquivalentTo(System::Data::Common::DbConnectionStringBuilder ^ connectionStringBuilder);
public virtual bool EquivalentTo (System.Data.Common.DbConnectionStringBuilder connectionStringBuilder);
abstract member EquivalentTo : System.Data.Common.DbConnectionStringBuilder -> bool
override this.EquivalentTo : System.Data.Common.DbConnectionStringBuilder -> bool
Public Overridable Function EquivalentTo (connectionStringBuilder As DbConnectionStringBuilder) As Boolean

Parameter

connectionStringBuilder
DbConnectionStringBuilder

Der DbConnectionStringBuilder, der mit diesem DbConnectionStringBuilder-Objekt verglichen werden soll.The DbConnectionStringBuilder to be compared with this DbConnectionStringBuilder object.

Gibt zurück

true, wenn die Verbindungsinformationen in beiden DbConnectionStringBuilder-Objekten eine gleichwertige Verbindungszeichenfolge ergeben, andernfalls false.true if the connection information in both of the DbConnectionStringBuilder objects causes an equivalent connection string; otherwise false.

Beispiele

static void Main()
{
    DbConnectionStringBuilder builder1 =
        new DbConnectionStringBuilder();
    builder1.ConnectionString =
        "Value1=SomeValue;Value2=20;Value3=30;Value4=40";
    Console.WriteLine("builder1 = " + builder1.ConnectionString);

    DbConnectionStringBuilder builder2 =
        new DbConnectionStringBuilder();
    builder2.ConnectionString =
        "value2=20;value3=30;VALUE4=40;Value1=SomeValue";
    Console.WriteLine("builder2 = " + builder2.ConnectionString);

    DbConnectionStringBuilder builder3 =
        new DbConnectionStringBuilder();
    builder3.ConnectionString =
        "value2=20;value3=30;VALUE4=40;Value1=SOMEVALUE";
    Console.WriteLine("builder3 = " + builder3.ConnectionString);

    // builder1 and builder2 contain the same
    // keys and values, in different order, and the 
    // keys are not consistently cased. They are equivalent.
    Console.WriteLine("builder1.EquivalentTo(builder2) = " +
        builder1.EquivalentTo(builder2).ToString());

    // builder2 and builder3 contain the same key/value pairs in the 
    // the same order, but the value casing is different, so they're
    // not equivalent.
    Console.WriteLine("builder2.EquivalentTo(builder3) = " +
        builder2.EquivalentTo(builder3).ToString());

    Console.WriteLine("Press Enter to continue.");
    Console.ReadLine();
}
Sub Main()
    Dim builder1 As New DbConnectionStringBuilder
    builder1.ConnectionString = _
        "Value1=SomeValue;Value2=20;Value3=30;Value4=40"
    Console.WriteLine("builder1 = " & builder1.ConnectionString)

    Dim builder2 As New DbConnectionStringBuilder
    builder2.ConnectionString = _
        "value2=20;value3=30;VALUE4=40;Value1=SomeValue"
    Console.WriteLine("builder2 = " & builder2.ConnectionString)

    Dim builder3 As New DbConnectionStringBuilder
    builder3.ConnectionString = _
        "value2=20;value3=30;VALUE4=40;Value1=SOMEVALUE"
    Console.WriteLine("builder3 = " & builder3.ConnectionString)

    ' builder1 and builder2 contain the same
    ' keys and values, in different order, and the 
    ' keys are not consistently cased. They are equivalent.
    Console.WriteLine("builder1.EquivalentTo(builder2) = " & _
        builder1.EquivalentTo(builder2).ToString())

    ' builder2 and builder3 contain the same key/value pairs in the 
    ' the same order, but the value casing is different, so they're
    ' not equivalent.
    Console.WriteLine("builder2.EquivalentTo(builder3) = " & _
        builder2.EquivalentTo(builder3).ToString())

    Console.WriteLine("Press Enter to continue.")
    Console.ReadLine()
End Sub

In diesem Beispiel wird die folgende Ausgabe angezeigt:This sample displays the following output:

builder1 = value1=SomeValue;value2=20;value3=30;value4=40  
builder2 = value2=20;value3=30;value4=40;value1=SomeValue  
builder3 = value2=20;value3=30;value4=40;value1=SOMEVALUE  
builder1.EquivalentTo(builder2) = True  
builder2.EquivalentTo(builder3) = False  

Hinweise

Bei Vergleichen bei Schlüsselnamen wird die Groß-/Kleinschreibung bei Wert vergleichen wird Groß-/Kleinschreibung beachtetComparisons on key names are case insensitive; value comparisons are case sensitive.

Die EquivalentTo -Methode true gibt zurück, wenn die Schlüssel-Wert-Paare unabhängig von ihrer Reihenfolge gleich sind.The EquivalentTo method returns true if the key/value pairs are equal, regardless of their order. Das Verbindungs Verhalten der beiden Verbindungs Zeichenfolgen ist äquivalent, da die Reihenfolge in Verbindungs Zeichenfolgen nie signifikant ist.The connection behavior of the two connection strings are equivalent, because order is never significant within connection strings. Die unterschiedliche Reihenfolge kann sich jedoch auf das Verbindungspooling Verhalten von Verbindungen auf Basis dieser Verbindungs Zeichenfolgen auswirken.However, different order may affect connection pooling behavior of connections based on these connection strings.

Gilt für:

Siehe auch