DataContext.ChangeConflicts プロパティ

定義

名前空間:

System.Data.Linq

アセンブリ:

System.Data.Linq.dll

SubmitChanges() が呼び出されたときにコンカレンシーの競合を発生させたオブジェクトのコレクションを取得します。

public:
 property System::Data::Linq::ChangeConflictCollection ^ ChangeConflicts { System::Data::Linq::ChangeConflictCollection ^ get(); };

public System.Data.Linq.ChangeConflictCollection ChangeConflicts { get; }

member this.ChangeConflicts : System.Data.Linq.ChangeConflictCollection

Public ReadOnly Property ChangeConflicts As ChangeConflictCollection

プロパティ値

ChangeConflictCollection

コンカレンシーの競合を引き起こしたオブジェクトのコレクション。

例

Northwnd db = new Northwnd("...");

try
{
    db.SubmitChanges(ConflictMode.ContinueOnConflict);
}

catch (ChangeConflictException e)
{
    Console.WriteLine("Optimistic concurrency error.");
    Console.WriteLine(e.Message);
    foreach (ObjectChangeConflict occ in db.ChangeConflicts)
    {
        MetaTable metatable = db.Mapping.GetTable(occ.Object.GetType());
        Customer entityInConflict = (Customer)occ.Object;
        Console.WriteLine("Table name: {0}", metatable.TableName);
        Console.Write("Customer ID: ");
        Console.WriteLine(entityInConflict.CustomerID);
        Console.ReadLine();
    }
}

Dim db As New Northwnd("...")

Try
    db.SubmitChanges(ConflictMode.ContinueOnConflict)

Catch ex As ChangeConflictException
    Console.WriteLine("Optimistic concurrency error.")
    Console.WriteLine(ex.Message)
    For Each occ As ObjectChangeConflict In db.ChangeConflicts
        Dim metatable As MetaTable = db.Mapping.GetTable(occ.Object.GetType())
        Dim entityInConflict = occ.Object

        Console.WriteLine("Table name: " & metatable.TableName)
        Console.Write("Customer ID: ")
        Console.WriteLine(entityInConflict.CustomerID)
        Console.ReadLine()
    Next
End Try

注釈

次の例は、コレクションを反復処理して競合情報を取得する方法を示しています。