ColumnAttribute::UpdateCheck Property

 

Gets or sets how LINQ to SQL approaches the detection of optimistic concurrency conflicts.

Namespace:   System.Data.Linq.Mapping
Assembly:  System.Data.Linq (in System.Data.Linq.dll)

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

Property Value

Type: System.Data.Linq.Mapping::UpdateCheck

Default = Always, unless IsVersion is true for a member.

Other values are Never and WhenChanged.

When this property is used with one of three enums, it determines how LINQ to SQL detects concurrency conflicts.

If no member is designed as IsVersion=true, original member values are compared with the current database state.

The following enums are available:

  • Always   Always use this column for conflict detection.

  • Never   Never use this column for conflict detection.

  • WhenChanged   Use this column only when the member has been changed by the application.

No code example is currently available or this language may not be supported.

.NET Framework
Available since 3.5
Windows Phone Silverlight
Available since 7.1
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