SyncGroup Class

Represents a group of SyncTable objects and provides a mechanism to ensure consistent application of changes for those tables.

Inheritance Hierarchy

System.Object
  Microsoft.Synchronization.Data.SyncGroup

Namespace:  Microsoft.Synchronization.Data
Assembly:  Microsoft.Synchronization.Data (in Microsoft.Synchronization.Data.dll)

Syntax

'Declaration
<SerializableAttribute> _
Public Class SyncGroup
'Usage
Dim instance As SyncGroup

[SerializableAttribute]
public class SyncGroup

[SerializableAttribute]
public ref class SyncGroup

[<SerializableAttribute>]
type SyncGroup =  class end

public class SyncGroup

The SyncGroup type exposes the following members.

Constructors

	Name	Description
	SyncGroup()	Initializes a new instance of the SyncGroup class by using default values.
	SyncGroup(String)	Initializes a new instance of the SyncGroup class by using a group name parameter.

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Properties

	Name	Description
	GroupName	Gets or sets the name of the SyncGroup.

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Methods

	Name	Description
	Equals	Determines whether a SyncGroup object is equal to the specified object. (Overrides Object.Equals(Object).)
	Finalize	(Inherited from Object.)
	GetHashCode	Serves as a hash function for a [T:Microsoft.Synchronization.Data.SyncGroup.] This is suitable for use in hashing algorithms and data structures such as a hash table. (Overrides Object.GetHashCode().)
	GetType	(Inherited from Object.)
	MemberwiseClone	(Inherited from Object.)
	ToString	Returns a string that represents the SyncGroup object. (Overrides Object.ToString().)

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Operators

	Name	Description
	Equality	Determines whether two specified SyncGroup objects are equal.
	Inequality	Determines whether two specified SyncGroup objects are not equal.

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Remarks

After a synchronization table is defined it can be added to a synchronization group. A synchronization group is a mechanism to ensure consistent application of changes for a set of tables. If tables are included in a synchronization group, changes to those tables are transferred as a unit and applied in a single transaction. If any change in the group fails, changes for the whole group are retried on the next synchronization.

Examples

The following code example is from a class that derives from SyncAgent. The code creates two synchronization groups and three synchronization tables. The Customer table is added to the Customer group and the OrderHeader and OrderDetail tables are added to the Order group. All tables are download-only. If a table exists at the client, the table is dropped and re-created during the initial synchronization. To view this code in the context of a complete example, see How to: Filter Rows and Columns.

//Create two SyncGroups so that changes to OrderHeader
//and OrderDetail are made in one transaction. Depending on
//application requirements, you might include Customer
//in the same group.
SyncGroup customerSyncGroup = new SyncGroup("Customer");
SyncGroup orderSyncGroup = new SyncGroup("Order");

//Add each table: specify a synchronization direction of
//DownloadOnly.
SyncTable customerSyncTable = new SyncTable("Customer");
customerSyncTable.CreationOption = TableCreationOption.DropExistingOrCreateNewTable;
customerSyncTable.SyncDirection = SyncDirection.DownloadOnly;
customerSyncTable.SyncGroup = customerSyncGroup;
this.Configuration.SyncTables.Add(customerSyncTable);

SyncTable orderHeaderSyncTable = new SyncTable("OrderHeader");
orderHeaderSyncTable.CreationOption = TableCreationOption.DropExistingOrCreateNewTable;
orderHeaderSyncTable.SyncDirection = SyncDirection.DownloadOnly;
orderHeaderSyncTable.SyncGroup = orderSyncGroup;
this.Configuration.SyncTables.Add(orderHeaderSyncTable);           

SyncTable orderDetailSyncTable = new SyncTable("OrderDetail");
orderDetailSyncTable.CreationOption = TableCreationOption.DropExistingOrCreateNewTable;
orderDetailSyncTable.SyncDirection = SyncDirection.DownloadOnly;
orderDetailSyncTable.SyncGroup = orderSyncGroup;
this.Configuration.SyncTables.Add(orderDetailSyncTable);

'Create two SyncGroups so that changes to OrderHeader
'and OrderDetail are made in one transaction. Depending on
'application requirements, you might include Customer
'in the same group.
Dim customerSyncGroup As New SyncGroup("Customer")
Dim orderSyncGroup As New SyncGroup("Order")

'Add each table: specify a synchronization direction of
'DownloadOnly.
Dim customerSyncTable As New SyncTable("Customer")
customerSyncTable.CreationOption = TableCreationOption.DropExistingOrCreateNewTable
customerSyncTable.SyncDirection = SyncDirection.DownloadOnly
customerSyncTable.SyncGroup = customerSyncGroup
Me.Configuration.SyncTables.Add(customerSyncTable)

Dim orderHeaderSyncTable As New SyncTable("OrderHeader")
orderHeaderSyncTable.CreationOption = TableCreationOption.DropExistingOrCreateNewTable
orderHeaderSyncTable.SyncDirection = SyncDirection.DownloadOnly
orderHeaderSyncTable.SyncGroup = orderSyncGroup
Me.Configuration.SyncTables.Add(orderHeaderSyncTable)

Dim orderDetailSyncTable As New SyncTable("OrderDetail")
orderDetailSyncTable.CreationOption = TableCreationOption.DropExistingOrCreateNewTable
orderDetailSyncTable.SyncDirection = SyncDirection.DownloadOnly
orderDetailSyncTable.SyncGroup = orderSyncGroup
Me.Configuration.SyncTables.Add(orderDetailSyncTable)

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.

See Also

Reference

Microsoft.Synchronization.Data Namespace