IFilteredSimpleSyncProvider 介面
表示篩選資料的提供者,而篩選可能會導致兩個複寫僅同步處理每個複寫可用的資料子集。
命名空間: Microsoft.Synchronization.SimpleProviders
組件: Microsoft.Synchronization.SimpleProviders (在 microsoft.synchronization.simpleproviders.dll)
語法
'宣告
Public Interface IFilteredSimpleSyncProvider
'用途
Dim instance As IFilteredSimpleSyncProvider
public interface IFilteredSimpleSyncProvider
public interface class IFilteredSimpleSyncProvider
public interface IFilteredSimpleSyncProvider
public interface IFilteredSimpleSyncProvider
備註
在某些狀況中,目的地複寫只需要可在來源複寫上使用的資料子集。例如,銷售人員可能只需要他定期銷售之產品的詳細產品資訊。簡單提供者可以透過實作 IFilteredSimpleSyncProvider 讓複寫篩選資料。如需詳細資訊,請參閱篩選簡單提供者的資料。
範例
下列程式碼範例會先指定 None 的篩選選項。這表示應該篩選出項目,即使目的地已知這些項目亦然。此程式碼範例然後實作 IsItemInFilterScope 方法,依據其中一個項目欄位值篩選出項目。在定義篩選之後,程式碼範例會實作 UseFilterThisSession 方法。如此可讓應用程式指定,是否應該根據每個工作階段來使用篩選。
SimpleSyncProviderFilterOptions IFilteredSimpleSyncProvider.FilterOptions
{
get
{
return SimpleSyncProviderFilterOptions.None;
}
}
bool IFilteredSimpleSyncProvider.IsItemInFilterScope(ItemFieldDictionary KeyAndVersion)
{
ulong itemId = (ulong)KeyAndVersion[1].Value;
ItemData itemData = _store.Get(itemId);
if (itemData["data"] == "3333")
{
return false;
}
return true;
}
bool IFilteredSimpleSyncProvider.UseFilterThisSession
{
get
{
// Indicate whether a filter has been requested and agreed upon for this session.
return ("" != _filter);
}
}
Private ReadOnly Property FilterOptions() As SimpleSyncProviderFilterOptions Implements IFilteredSimpleSyncProvider.FilterOptions
Get
Return SimpleSyncProviderFilterOptions.None
End Get
End Property
Private Function IsItemInFilterScope(ByVal KeyAndVersion As ItemFieldDictionary) As Boolean Implements IFilteredSimpleSyncProvider.IsItemInFilterScope
Dim itemId As ULong = KeyAndVersion(1).Value
Dim data As ItemData = _store.Get(itemId)
If data("data") Is "3333" Then
Return False
End If
Return True
End Function
Private ReadOnly Property UseFilterThisSession() As Boolean Implements IFilteredSimpleSyncProvider.UseFilterThisSession
Get
' Indicate whether a filter has been requested and agreed upon for this session.
Return "" Is _filter
End Get
End Property
請參閱
參考
IFilteredSimpleSyncProvider 成員
Microsoft.Synchronization.SimpleProviders 命名空間