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我有一个符合 CLS 的项目,除了一个变量声明让我感到困惑如何更正。

我有一个名为 MySQL 的类,总结起来是这样的:

public class mysql
 implements idisposable

 private connection as new mysqlconnection
 private command as new mysqlcommand
 <CLSCompliant(false)> public reader as mysqldatareader

 public sub new(byval query as string)
  if connection.state = connectionstate.open then
    connection.connectionstring = my.settings.connectionstring
    connection.open()

    command.connection = connection
    command.commandtext = query
 end sub

 public sub parameters(byval name as string, byval value as string)
  command.parameters.addwithvalue(name, value)
 end sub

 public sub retrieve()
  reader = command.executereader()
 end sub

 public sub send()
  command.executenonquery()
 end sub

 public sub close()
  if me.command.connection.state = connectionstate.open then me.command.connection.close
  if me.connection.state = connectionstate.open then me.connection.close
  me.dispose()
 end sub

 #region "IDisposable support"
  private disposedvalue as boolean
   protected overridable sub dispose(disposing as boolean)
     if not me.disposedbalue then
       if disposing then
       #dispose maaged state
       end if

       connection.dispose()
       command.dispose()
       reader = nothing
      end if
      me.disposedvalue = true
   end sub

  public sub dispose() implement idisposable.dispose
    dispose(true)
    gc.suppressfinalize(me)
  end sub
 #end region

end class

用法:

dim sql as new MySQL("SELECT * FROM TABLE WHERE NAME = ?Name")
sql.parameters("?Name", me.textboxusername.text)

call sql.retrieve()

while sql.reader.read
  text = sql.reader.getstring(sql.readergetordinal("User_Name")
end while

call sql.close()

作为 MySQLDataReader 的公共阅读器不符合 CLS,我不确定如何解决该问题。我已经升级到最新的 mysql 数据连接器版本。我想知道是否应该将其设为私有变量并读取结果抛出一个函数?

对于以下代码片段中的大写错误、拼写错误等,我深表歉意,我是在从远程桌面连接查看时输入的。

4

1 回答 1

2

试试这个代码先生来声明 mysqlcommand 。

    Public query As String, cmd As MySqlCommand, reader As MySqlDataReader
    Public SQLConnection As MySqlConnection = New MySqlConnection
于 2014-02-07T00:58:13.673 回答