如何將子句綁定到DayOfWeek var？

Question

我該如何添加一個子串到lbl_diasemana標籤？

var culture = new System.Globalization.CultureInfo("pt-BR"); 
var diasemana = culture.DateTimeFormat.GetDayName(DateTime.Today.DayOfWeek); 
lbl_diasemana.Text = diasemana; 

Answer 1

var culture = new System.Globalization.CultureInfo("pt-BR"); 
var diasemana = culture.DateTimeFormat.GetDayName(DateTime.Today.DayOfWeek).Substring(0,3); 
lbl_diasemana.Text = diasemana; 

Answer 2

使用Substring過載，它接受的字符開始索引和數量削減：

lbl_diasemana.Text = diasemana.Substring(0, 3); 

Answer 3

var culture = new System.Globalization.CultureInfo("pt-BR"); 
lbl_diasemana.Text = culture.DateTimeFormat.GetDayName(DateTime.Today.DayOfWeek).Substring(0, 3); 

可以在兩行代碼來完成

Answer 4

你可以使用DateTime.Today.ToString（...）方法與適當的格式字符串和文化是這樣的：

System.Globalization.CultureInfo culture = new System.Globalization.CultureInfo("pt-BR"); 
lbl_diasemana.Text = DateTime.Today.ToString("ddd", culture); 

https://msdn.microsoft.com/en-us/library/8tfzyc64(v=vs.110).aspx