winform的ComboBox中只能赋值text,显示和值是一样的,很多时候不能满足根本需要,熟悉B/S开发的coder最常用的就是text和value分开的,而且web下DropDownList本来就是分为text和value.ComboBox要实现同样功能,使item有多个值,只能用重写一个类来实现了. 重写类如下: using System; namespace sm { class cListItem { private string id = string.Empty; public
转:装完Centos7提示Initial setup of CentOS Linux 7 (core) 在用U盘装完CentOS后,重新开机启动后显示: Initial setup of CentOS Linux 7 (core) 1) [x] Creat user 2) [!] License information (no user will be created) (license not accepted) Please make your choice from above ['q
装完RHEL7后,重新开机启动后显示: 1) [x] Creat user 2) [!] License information (no user will be created) (license not accepted) Please make your choice from above ['q' to quit | 'c' to continue | 'r' to refresh]: 解决方法: 输入"1",按Enter键 输入"2",按Enter键 输入
在CentOS6.5下将自带的python2.6升级到python2.7,并安装了ipython,启动ipython后显示如下信息: WARNING: IPython History requires SQLite, your history will not be saved 解决方法如下: 下载并解压sqlite包,输入命令:#wget http://www.sqlite.org/sqlite-autoconf-3071401.tar.gz#tar zxvf sqlite-autoconf-