RefreshMode Enumeration
Defines how the Refresh method handles optimistic concurrency conflicts.
Assembly: System.Data.Linq (in System.Data.Linq.dll)
| Member name | Description | |
|---|---|---|
| KeepCurrentValues | Forces the Refresh method to swap the original value with the values retrieved from the database. No current value is modified. | |
| KeepChanges | Forces the Refresh method to keep the current value that has been changed, but updates the other values with the database values. | |
| OverwriteCurrentValues | Forces the Refresh method to override all the current values with the values from the database. |
This enumeration applies to all Refresh overloads.
The following example overwrites current values with values from the database.
Dim db As New Northwnd("...") Try db.SubmitChanges(ConflictMode.ContinueOnConflict) Catch ex As ChangeConflictException Console.WriteLine(ex.Message) For Each occ As ObjectChangeConflict In db.ChangeConflicts ' All database values overwrite current values. occ.Resolve(Data.Linq.RefreshMode.OverwriteCurrentValues) Next End Try
The following example shows how to swap the original value with the values retrieved from the database. No current value is modified.
The following example keeps the current values that have been changed, but updates the other values with database values.
Try db.SubmitChanges(ConflictMode.ContinueOnConflict) Catch ex As ChangeConflictException Console.WriteLine(ex.Message) For Each occ As ObjectChangeConflict In db.ChangeConflicts ' Automerge database values into current for members ' that client has not modified. occ.Resolve(Data.Linq.RefreshMode.KeepChanges) Next End Try ' Submit succeeds on second try. db.SubmitChanges(ConflictMode.FailOnFirstConflict)
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.