类中有执行无参SQL语句的方法、执行带参SQL语句的方法

、执行无参SQL语句，并返回执行记录数的方法、执行有参SQL语句，并返回执行记录数的方法、执行无参SQL语句，并返回SqlDataReader的方法和执行有参SQL语句，并返回SqlDataReader的方法。封装DBHeiper.cs类可以更好在在编写代码中用于方便的调用。在日后的改写代码中更加的方便。-In the execution of no parameters SQL statement method, execution and SQL statement with method

No parameters, execute SQL statements, and returns the number of executive record method, executive have and SQL statements, and returns the number of executive record executive method, no arguments SQL statements, and returns SqlDataReader method and execution have and SQL statements, and returns SqlDataReader method. Packaging DBHeiper. Cs class can be better used to write the code in the convenient calls. In in the future rewrite code more convenient.