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
[已解决]关于python无法显示中文的问题:SyntaxError: Non-ASCII character '\xe4' in file test.py on line 3, but no encoding declared. 想在python代码中输出汉字.但是老是出现SyntaxError: Non-ASCII character '\xe4' in file test.py on line , but no encoding declared. (test.py是我自己的文件,提示错误
-[定制网格数据单元] 在数据单元中显示字段值为图形. TDBGridEh allows to show bitmaps from TImageList component depending on field values. TDBGridEh 可以根据字段的值显示TImageList 组件中相应的BMP. To show bitmaps depending on field values need: 要根据字段的值显示BMP图片需要, Fill list of field values
add by zhj: 在Python文档中清楚的说明了默认参数是怎么工作的,如下 "Default parameter values are evaluated when the function definition is executed. This means that the expression is evaluated once, when the function is defined, and that the same “pre-computed” value is used