SyncAdapter.SelectIncrementalUpdatesCommand Property

Gets or sets the query or stored procedure that is used to retrieve updates made in the server database since the last synchronization.

Namespace: Microsoft.Synchronization.Data.Server
Assembly: Microsoft.Synchronization.Data.Server (in microsoft.synchronization.data.server.dll)

Syntax

'Declaration
Public Property SelectIncrementalUpdatesCommand As IDbCommand

public IDbCommand SelectIncrementalUpdatesCommand { get; set; }

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

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

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

public function get SelectIncrementalUpdatesCommand () : IDbCommand

public function set SelectIncrementalUpdatesCommand (value : IDbCommand)

Property Value

An IDbCommand object that contains a query or stored procedure.

Remarks

Synchronization adapter commands enable you to specify the queries and stored procedures that are used to select from and apply changes to the server database. For more information, see How to: Specify Snapshot, Download, Upload, and Bidirectional Synchronization. Each command uses session variables that enable you to pass values during synchronization. These variables are specified like other parameters to queries or stored procedures in ADO.NET commands. For more information, see How to: Use Session Variables.

Example

The following code example creates a command that selects updated rows from the Customer table in bidirectional and download-only synchronization scenarios. To view this code in the context of a complete example, see How to: Handle Data Conflicts and Errors.

SqlCommand customerIncrUpdates = new SqlCommand();
customerIncrUpdates.CommandText =
    "SELECT CustomerId, CustomerName, SalesPerson, CustomerType " +
    "FROM Sales.Customer " +
    "WHERE (UpdateTimestamp > @sync_last_received_anchor " +
    "AND UpdateTimestamp <= @sync_new_received_anchor " +
    "AND UpdateId <> @sync_client_id " +
    "AND NOT (InsertTimestamp > @sync_last_received_anchor " +
    "AND InsertId <> @sync_client_id))";
customerIncrUpdates.Parameters.Add("@" + SyncSession.SyncLastReceivedAnchor, SqlDbType.Timestamp);
customerIncrUpdates.Parameters.Add("@" + SyncSession.SyncNewReceivedAnchor, SqlDbType.Timestamp);
customerIncrUpdates.Parameters.Add("@" + SyncSession.SyncClientId, SqlDbType.UniqueIdentifier);
customerIncrUpdates.Connection = serverConn;
customerSyncAdapter.SelectIncrementalUpdatesCommand = customerIncrUpdates;

Dim customerIncrUpdates As New SqlCommand()
With customerIncrUpdates
    .CommandText = _
        "SELECT CustomerId, CustomerName, SalesPerson, CustomerType " _
      & "FROM Sales.Customer " _
      & "WHERE (UpdateTimestamp > @sync_last_received_anchor " _
      & "AND UpdateTimestamp <= @sync_new_received_anchor " _
      & "AND UpdateId <> @sync_client_id " _
      & "AND NOT (InsertTimestamp > @sync_last_received_anchor " _
      & "AND InsertId <> @sync_client_id))"
    .Parameters.Add("@" + SyncSession.SyncLastReceivedAnchor, SqlDbType.Timestamp)
    .Parameters.Add("@" + SyncSession.SyncNewReceivedAnchor, SqlDbType.Timestamp)
    .Parameters.Add("@" + SyncSession.SyncClientId, SqlDbType.UniqueIdentifier)
    .Connection = serverConn
End With
customerSyncAdapter.SelectIncrementalUpdatesCommand = customerIncrUpdates

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Platforms

Development Platforms

For a list of the supported platforms, see Hardware and Software Requirements (Synchronization Services).

Target Platforms

See Also

Reference

SyncAdapter Class
SyncAdapter Members
Microsoft.Synchronization.Data.Server Namespace