ComboBox值排序先是想通过冒泡排序,但是冒泡排序是int类型,又打算通过下标,进行字符串排序,然后想到了一个简单的办法……先存入ArrayList排序Sort清空ComboBox再遍历存入ComboBox很简单的几行代码搞定 ArrayList al =new ArrayList(); for (int i = 0; i < combobox.Items.Count; i++) { string a = combobox.Items[i].ToString(); al.Add(a);…
记order by 语句对null值排序: 目录 记order by 语句对null值排序: MySQL: Oracle: SqlServer: MySQL: 将null值放在最后 select * from user order by i f(isnull(sort), 1, 0),sort asc,publish_time desc; 将null值放在最前 select * from user order by if(isnull(sort), 0, 1),sort asc,publish_…