DbSyncProvider.UpdateScopeCleanupTimestampCommand 属性

获取或设置一个 IDbCommand 对象，该对象包含的查询或存储过程更新 scope_info 表中特定作用域的 scope_cleanup_timestamp 列，以便标记该时间点直到为作用域执行了清除。

此属性不符合 CLS。  

命名空间: Microsoft.Synchronization.Data
程序集: Microsoft.Synchronization.Data（在 microsoft.synchronization.data.dll 中）

语法

声明
Public Overridable Property UpdateScopeCleanupTimestampCommand As IDbCommand
用法
Dim instance As DbSyncProvider
Dim value As IDbCommand

value = instance.UpdateScopeCleanupTimestampCommand

instance.UpdateScopeCleanupTimestampCommand = value

public virtual IDbCommand UpdateScopeCleanupTimestampCommand { get; set; }

public:
virtual property IDbCommand^ UpdateScopeCleanupTimestampCommand {
    IDbCommand^ get ();
    void set (IDbCommand^ value);
}

/** @property */
public IDbCommand get_UpdateScopeCleanupTimestampCommand ()

/** @property */
public void set_UpdateScopeCleanupTimestampCommand (IDbCommand value)

public function get UpdateScopeCleanupTimestampCommand () : IDbCommand

public function set UpdateScopeCleanupTimestampCommand (value : IDbCommand)

属性值

包含查询或存储过程的 IDbCommand 对象。

示例

下面的代码示例指定了针对 UpdateScopeCleanupTimestampCommand 属性的一个命令。此命令和为 SelectOverlappingScopesCommand 属性指定的命令使得 Sync Framework 能够在一个表包括在多个作用域中的情况下适当处理清除。若要在完整示例上下文中查看此代码，请参见如何清除协作同步的元数据（非 SQL Server）。

SqlCommand updScopeCleanupInfoCmd = new SqlCommand();
updScopeCleanupInfoCmd.CommandType = CommandType.Text;
updScopeCleanupInfoCmd.CommandText = "UPDATE  scope_info set " +
                                     " scope_cleanup_timestamp = @" + DbSyncSession.SyncScopeCleanupTimestamp + 
                                     " WHERE scope_name = @" + DbSyncSession.SyncScopeName + 
                                     " AND(scope_cleanup_timestamp is null or scope_cleanup_timestamp <  @" + DbSyncSession.SyncScopeCleanupTimestamp + ");" +
                                     " SET @" + DbSyncSession.SyncRowCount + " = @@rowcount";
updScopeCleanupInfoCmd.Parameters.Add("@" + DbSyncSession.SyncScopeCleanupTimestamp, SqlDbType.BigInt);
updScopeCleanupInfoCmd.Parameters.Add("@" + DbSyncSession.SyncScopeName, SqlDbType.NVarChar, 100);
updScopeCleanupInfoCmd.Parameters.Add("@" + DbSyncSession.SyncRowCount, SqlDbType.Int).Direction = ParameterDirection.Output;
sampleDbProvider.UpdateScopeCleanupTimestampCommand = updScopeCleanupInfoCmd;

Dim updScopeCleanupInfoCmd As New SqlCommand()
With updScopeCleanupInfoCmd
    .CommandType = CommandType.Text
    .CommandText = "UPDATE  scope_info set " _
                 & " scope_cleanup_timestamp = @" + DbSyncSession.SyncScopeCleanupTimestamp _
                 & " WHERE scope_name = @" + DbSyncSession.SyncScopeName _
                 & " AND(scope_cleanup_timestamp is null or scope_cleanup_timestamp <  @" + DbSyncSession.SyncScopeCleanupTimestamp + ");" _
                 & " SET @" + DbSyncSession.SyncRowCount + " = @@rowcount"
    .Parameters.Add("@" + DbSyncSession.SyncScopeCleanupTimestamp, SqlDbType.BigInt)
    .Parameters.Add("@" + DbSyncSession.SyncScopeName, SqlDbType.NVarChar, 100)
    .Parameters.Add("@" + DbSyncSession.SyncRowCount, SqlDbType.Int).Direction = ParameterDirection.Output
End With

sampleDbProvider.UpdateScopeCleanupTimestampCommand = updScopeCleanupInfoCmd

请参阅

参考

DbSyncProvider 类
DbSyncProvider 成员
Microsoft.Synchronization.Data 命名空间