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UpdateCheck Enum

Definition

Namespace:
System.Data.Linq.Mapping
Assembly:
System.Data.Linq.dll

Specifies when objects are to be tested for concurrency conflicts.

public enum class UpdateCheck
public enum UpdateCheck
type UpdateCheck = 
Public Enum UpdateCheck
Inheritance
Object
ValueType
Enum
UpdateCheck

Fields

Name Value Description
Always 0

Always check. This is the default unless IsVersion is true for a member.
Never 1

Never check.
WhenChanged 2

Check only when the object has been changed.

Examples

[Column(Storage="_HomePage", DbType="NText", UpdateCheck=UpdateCheck.Never)]
public string HomePage
{
    get
    {
        return this._HomePage;
    }
    set
    {
        if ((this._HomePage != value))
    {
        this.OnHomePageChanging(value);
        this.SendPropertyChanging();
            this._HomePage = value;
        this.SendPropertyChanged("HomePage");
            this.OnHomePageChanged();
    }
    }
}

<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

Remarks

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

Applies to