Question

我们在Azure Sql连接和命令上应用了Microsoft的企业库Transient Fault Handling Block。

例如，

using(var sqlConnection = new ReliableSqlConnection(_connectionString, _connectionRetry, _commandRetry)
{
    var command = sqlConnection.CreateCommand();
    command.CommandText = "...";
    sqlConnection.Open();

    using(var reader = sqlConnection.ExecuteCommand<SqlDataReader>(command))
    {
        ...
    }
}

它适用于command.ExecuteReader()，这是没有重试策略的原始呼叫。但是，如果代码使用DataSet和SqlDataAdapter：

，该怎么办？

using(var sqlConnection = new ReliableSqlConnection(_connectionString, _connectionRetry, _commandRetry)
{
    var command = sqlConnection.CreateCommand();
    command.CommandText = "...";
    sqlConnection.Open();

    // how to convert below codes to right way?
    var adapter = new SqlDataAdapter(command);
    var dataSet = new DataSet();
    adapter.Fill(dataSet);

    // handle dataSet
    ...
}

我们主要处理一些遗留代码以添加一些重试策略。

Answer 1

好的，我找到了解决方法：

using(var sqlConnection = new ReliableSqlConnection(_connectionString, _connectionRetry, _commandRetry)
{
    var command = sqlConnection.CreateCommand();
    command.CommandText = "...";
    sqlConnection.Open();

    var dataReader = sqlConnection.ExecuteCommand<SqlDataReader>();
    var dataTable = new DataTable();
    dataTable.Load(dataReader);

    // handle dataTable, in our case the data set only returns one table, so it's ok
    ...
}

如何在SqlDataAdapter / DataSet上应用ReliableSqlConnection的重试策略

1 个答案: