UpdateCheck Enum

Reference

Definition

Namespace:: System.Data.Linq.Mapping

Assembly:: System.Data.Linq.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

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

Поділитися через