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UpdateCheck Enumeration

UpdateCheck Enumeration

Specifies when objects are to be tested for concurrency conflicts.

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

'Declaration
Public Enumeration UpdateCheck

Member nameDescription
AlwaysAlways check. This is the default unless IsVersion is true for a member.
NeverNever check.
WhenChangedCheck only when the object has been changed.

The code example after the table specifies that HomePage objects should never be tested.

<Column(Storage:="_HomePage", DbType:="NText", UpdateCheck:=UpdateCheck.Never)>  _
Public Property HomePage() As String 
    Get 
        Return Me._HomePage
    End Get 
    Set(ByVal value As String)
        If ((Me._HomePage <> value)  _
            = false) Then 
	    Me.OnHomePageChanging(value)
            Me.SendPropertyChanging
            Me._HomePage = value
            Me.SendPropertyChanged("HomePage")
            Me.OnHomePageChanged
        End If 
    End Set 
End Property

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5

.NET Framework Client Profile

Supported in: 4
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