检查SqlDataReader对象中的列名称

using (SqlConnection connection = new SqlConnection(connectionString))
{
    connection.Open();

    using (SqlCommand command = new SqlCommand(queryString, connection))
    {
        using (SqlDataReader reader = command.ExecuteReader())
        {
            DataTable schemaTable = reader.GetSchemaTable();
            foreach (DataRow row in schemaTable.Rows)
            {
                string columnName = row["ColumnName"].ToString();
                Console.WriteLine("Column Name: " + columnName);
            }
        }
    }
}