我有一个大字符串,它存储在字符串变量str中.我想从c#中得到一个子串？假设字符串是:" Retrieves a substring from this instance. The substring starts at a specified character position."
" Retrieves a substring from this instance. The substring starts at a specified character position."
子串结果我要显示的是: The substring starts at a specified character position.
The substring starts at a specified character position.
c#
c# ×1