public string GetCommandLogString(IDbCommand command)
{
    string outputText;
    if(command.Parameters.Count == 0)
    {
        outputText = command.CommandText;
    }
    else
    {
        StringBuilder output = new StringBuilder();
        output.Append(command.CommandText);
        output.Append("; ");

        IDataParameter objIDataParameter;
        int parameterCount = command.Parameters.Count;
        for(int i = 0; i < parameterCount; i++)
        {
            objIDataParameter = (IDataParameter)command.Parameters[i];
            output.Append(string.Format("{0} = '{1}'", objIDataParameter.ParameterName, objIDataParameter.Value));

            if(i + 1 < parameterCount)
            {
                output.Append(", ");
            }
        }
        outputText = output.ToString();
    }
    return outputText;
}

using (var conn = new WrappedDbConnection(GetMyConnection()))
{
    // Do work using Dapper here against "conn"
}

public class WrappedDbConnection : IDbConnection
{
    private readonly IDbConnection _conn;
    public WrappedDbConnection(IDbConnection connection)
    {
        if (connection == null)
            throw new ArgumentNullException(nameof(connection));

        _conn = connection;
    }

    public string ConnectionString
    {
        get { return _conn.ConnectionString; }
        set { _conn.ConnectionString = value; }
    }

    public int ConnectionTimeout
    {
        get { return _conn.ConnectionTimeout; }
    }

    public string Database
    {
        get { return _conn.Database; }
    }

    public ConnectionState State
    {
        get { return _conn.State; }
    }

    public IDbTransaction BeginTransaction()
    {
        return _conn.BeginTransaction();
    }

    public IDbTransaction BeginTransaction(IsolationLevel il)
    {
        return _conn.BeginTransaction(il);
    }

    public void ChangeDatabase(string databaseName)
    {
        _conn.ChangeDatabase(databaseName);
    }

    public void Close()
    {
        _conn.Close();
    }

    public IDbCommand CreateCommand()
    {
        return new WrappedDbCommand(_conn.CreateCommand());
    }

    public void Dispose()
    {
        _conn.Dispose();
    }

    public void Open()
    {
        _conn.Open();
    }
}

public class WrappedDbCommand : IDbCommand
{
    private readonly IDbCommand _cmd;
    public WrappedDbCommand(IDbCommand command)
    {
        if (command == null)
            throw new ArgumentNullException(nameof(command));

        _cmd = command;
    }

    public string CommandText
    {
        get { return _cmd.CommandText; }
        set { _cmd.CommandText = value; }
    }

    public int CommandTimeout
    {
        get { return _cmd.CommandTimeout; }
        set { _cmd.CommandTimeout = value; }
    }

    public CommandType CommandType
    {
        get { return _cmd.CommandType; }
        set { _cmd.CommandType = value; }
    }

    public IDbConnection Connection
    {
        get { return _cmd.Connection; }
        set { _cmd.Connection = value; }
    }

    public IDataParameterCollection Parameters
    {
        get { return _cmd.Parameters; }
    }

    public IDbTransaction Transaction
    {
        get { return _cmd.Transaction; }
        set { _cmd.Transaction = value; }
    }

    public UpdateRowSource UpdatedRowSource
    {
        get { return _cmd.UpdatedRowSource; }
        set { _cmd.UpdatedRowSource = value; }
    }

    public void Cancel()
    {
        _cmd.Cancel();
    }

    public IDbDataParameter CreateParameter()
    {
        return _cmd.CreateParameter();
    }

    public void Dispose()
    {
        _cmd.Dispose();
    }

    public int ExecuteNonQuery()
    {
        Console.WriteLine($"[ExecuteNonQuery] {_cmd.CommandText}");
        return _cmd.ExecuteNonQuery();
    }

    public IDataReader ExecuteReader()
    {
        Console.WriteLine($"[ExecuteReader] {_cmd.CommandText}");
        return _cmd.ExecuteReader();
    }

    public IDataReader ExecuteReader(CommandBehavior behavior)
    {
        Console.WriteLine($"[ExecuteReader({behavior})] {_cmd.CommandText}");
        return _cmd.ExecuteReader();
    }

    public object ExecuteScalar()
    {
        Console.WriteLine($"[ExecuteScalar] {_cmd.CommandText}");
        return _cmd.ExecuteScalar();
    }

    public void Prepare()
    {
        _cmd.Prepare();
    }
}