.NET Framework Class Library
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)
Syntax

Visual Basic (Declaration)
Public Enumeration UpdateCheck
Visual Basic (Usage)
Dim instance As UpdateCheck
C#
public enum UpdateCheck
Visual C++
public enum class UpdateCheck
JScript
public enum UpdateCheck
Members

Member nameDescription
AlwaysAlways check.
NeverNever check.
WhenChangedCheck only when the object has been changed.
Remarks

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

Examples

Visual Basic
<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
C#
[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();
    }
    }
}
Platforms

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
Version Information

.NET Framework

Supported in: 3.5
See Also

Reference

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