Can we delete Microsoft access table rows using access column values C#

//string str = "insert into        eBSV_Rules(Idx,RuleCode,RuleName,TableName,Conditions,DisplayMessage,,) values     (@id,@name)";
string sql = " DELETE FROM eBSV_Rules WHERE [Idx] = ? ";
//'" +  ? + "'
my_con.Open();
OleDbCommand My_Command = new OleDbCommand(sql, my_con);
My_Command.ExecuteNonQuery();

bindgrid();