Question

哪位高手帮我一下 解释下面C#带下划线代码的意义

public void Configure(DateTime date, params string[] countries)
{
DropDownList1.Items.Clear();

Calendar1.SelectedDate = date;

ListItem[] items = new ListItem[countries.Length];

for (int i = 0; i < countries.Length; i++)
{
items[i] = new ListItem(countries[i]);
}
DropDownList1.Items.AddRange(items);
}
整段都有下划线，不好意思哈

Answer 1

public void Configure(DateTime date, params string[] countries)
{
DropDownList1.Items.Clear(); //清空dropdownlist控件项

Calendar1.SelectedDate = date; //当前日期控件选中日期为date

ListItem[] items = new ListItem[countries.Length]; //建立listitem项数组

for (int i = 0; i < countries.Length; i++)
{
items[i] = new ListItem(countries[i]); //给listitem数组赋值
}
DropDownList1.Items.AddRange(items); //items数组追加到下拉列表的末尾
}

不知道解释的清楚不

Answer 2

清空dropdownlist1的所有选项
calendar1的选中日期为date
循环的部分是重新向dropdownlist1中添加选项

Answer 3

先清空dropdownlist 设置日历控件的日期为当前日期 声明ListItem 遍历传入的集合 将值赋给ListItem 添加listiem 到dropdownlist

Answer 4

就是往 DropDownList1.Items里添加符合要求的items

Answer 5

哪里有下划线啊

Answer 6

public void Configure(DateTime date, params string[] countries)
{
DropDownList1.Items.Clear(); //清空DropDownList1的选项
Calendar1.SelectedDate = date; //指定Calendar1选中的时间为date
ListItem[] items = new ListItem[countries.Length]; //声明长度为countries.Length的ListItem集合
for (int i = 0; i < countries.Length; i++) //for循环将countries加入到ListItem中
{
items[i] = new ListItem(countries[i]);
}
DropDownList1.Items.AddRange(items); //将ListItem绑定到DropDownList1选项中
}