ReplicationObject.CachePropertyChanges 属性

定义

命名空间:

Microsoft.SqlServer.Replication

程序集:

Microsoft.SqlServer.Rmo.dll

获取或设置是缓存复制属性的更改，还是立即应用。

public:
 property bool CachePropertyChanges { bool get(); void set(bool value); };

public bool CachePropertyChanges { get; set; }

member this.CachePropertyChanges : bool with get, set

Public Property CachePropertyChanges As Boolean

属性值

Boolean

一个Boolean值。 如果 true，则属性变化会被缓存。 如果 false，属性变化立即生效。

示例

// Define the server, database, and publication names
string publisherName = publisherInstance;
string publicationName = "AdvWorksProductTran";
string publicationDbName = "AdventureWorks2012";

TransPublication publication;

// Create a connection to the Publisher.
ServerConnection conn = new ServerConnection(publisherName);

try
{
    // Connect to the Publisher.
    conn.Connect();

    // Set the required properties for the publication.
    publication = new TransPublication();
    publication.ConnectionContext = conn;
    publication.Name = publicationName;
    publication.DatabaseName = publicationDbName;

    // Explicitly enable caching of property changes on this object.
    publication.CachePropertyChanges = true;

    // If we can't get the properties for this publication, 
    // throw an application exception.
    if (publication.LoadProperties())
    {
        // Enable support for push subscriptions and disable support 
        // for pull subscriptions.
        if ((publication.Attributes & PublicationAttributes.AllowPull) != 0)
        {
            publication.Attributes ^= PublicationAttributes.AllowPull;
        }
        if ((publication.Attributes & PublicationAttributes.AllowPush) == 0)
        {
            publication.Attributes |= PublicationAttributes.AllowPush;
        }

        // Send changes to the server.
        publication.CommitPropertyChanges();
    }
    else
    {
        throw new ApplicationException(String.Format(
            "Settings could not be retrieved for the publication. " +
            "Ensure that the publication {0} exists on {1}.",
            publicationName, publisherName));
    }
}
catch (Exception ex)
{
    // Do error handling here.
    throw new ApplicationException(
        "The publication property could not be changed.", ex);
}
finally
{
    conn.Disconnect();
}

' Define the server, database, and publication names
Dim publisherName As String = publisherInstance
Dim publicationName As String = "AdvWorksProductTran"
Dim publicationDbName As String = "AdventureWorks2012"

Dim publication As TransPublication

' Create a connection to the Publisher.
Dim conn As ServerConnection = New ServerConnection(publisherName)

Try
    ' Connect to the Publisher.
    conn.Connect()

    ' Set the required properties for the publication.
    publication = New TransPublication()
    publication.ConnectionContext = conn
    publication.Name = publicationName
    publication.DatabaseName = publicationDbName

    ' Explicitly enable caching of property changes on this object.
    publication.CachePropertyChanges = True

    ' If we can't get the properties for this publication, 
    ' throw an application exception.
    If publication.LoadProperties() Then
        ' Enable support for push subscriptions and disable support 
        ' for pull subscriptions.
        If (publication.Attributes And PublicationAttributes.AllowPull) <> 0 Then
            publication.Attributes = publication.Attributes _
            Xor PublicationAttributes.AllowPull
        End If
        If (publication.Attributes And PublicationAttributes.AllowPush) = 0 Then
            publication.Attributes = publication.Attributes _
            Or PublicationAttributes.AllowPush
        End If

        ' Send changes to the server.
        publication.CommitPropertyChanges()
    Else
        Throw New ApplicationException(String.Format( _
         "Settings could not be retrieved for the publication. " + _
         "Ensure that the publication {0} exists on {1}.", _
         publicationName, publisherName))
    End If
Catch ex As Exception
    ' Do error handling here.
    Throw New ApplicationException( _
        "The publication property could not be changed.", ex)
Finally
    conn.Disconnect()
End Try

注解

当 的CachePropertyChanges值为false时，属性会立即根据对象ServerConnection的属性进行SqlExecutionModes更改。 当值设置为 true时，属性变更会被缓存，直到 CommitPropertyChanges 调用。 当 CommitPropertyChanges 调用时，之后 CachePropertyChanges 所有属性变更都根据该 SqlExecutionModes 属性设置。

缓存仅适用于存储在 Microsoft SQL Server 中的属性。

CachePropertyChanges 的默认值为 false。