//シングルトン
private DatabaseOperation()
{
//接続文字列の生成
basePath = Directory.GetCurrentDirectory() + @"\ApplicationDatabase.mdf";
connStr = @"Data Source=(LocalDB)\v11.0;Integrated Security=True;Connection Timeout=30;AttachDbFilename=""" + basePath + @""";";
//データベース接続
RetryHelper.Retry(() => {
database = new ApplicationDataClassesDataContext(connStr);
},
ex => ExceptionDispatchInfo.Capture(ex).Throw(),
ex => ex is SqlException);
}
public RegistrationDateViewModel()
{
//データベース接続
DatabaseOperation dbOperator = DatabaseOperation.Instance;
database = dbOperator.GetConnectionedDataContext;
}