如何在C#中检查字符串的最后一个字符？
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How to check the last character of a string in C#?
提问by esq619
I want to find the last character of a string and then put in an ifstating that if the last character is equal to "A", "B" or "C" then to do a certain action. How do I get the last character?
我想找到字符串的最后一个字符，然后输入一个if声明，如果最后一个字符等于“A”、“B”或“C”，则执行某个操作。我如何获得最后一个字符？
采纳答案by Unicorno Marley
Use the endswithmethod of strings:
使用endswith字符串的方法：
if (string.EndsWith("A") || string.EndsWith("B"))
{
//do stuff here
}
Heres the MSDN article explaining this method:
这是解释此方法的 MSDN 文章：
http://msdn.microsoft.com/en-us/library/system.string.endswith(v=vs.71).aspx
http://msdn.microsoft.com/en-us/library/system.string.endswith(v=vs.71).aspx
回答by icktoofay
I assume you don't actually want the last character position(which would be yourString.Length - 1), but the last character itself. You can find that by indexing the string with the last character position:
我假设您实际上并不想要最后一个字符的位置（即yourString.Length - 1），而是最后一个字符本身。您可以通过使用最后一个字符位置索引字符串来发现：
yourString[yourString.Length - 1]
回答by Parimal Raj
stringis a zero basedarray of char.
string是一个zero based数组char。
char last_char = mystring[mystring.Length - 1];
Regarding the second part of the question, if the char is A, B, C
关于问题的第二部分，如果字符是A, B,C
Using if statement
使用 if statement
char last_char = mystring[mystring.Length - 1];
if (last_char == 'A' || last_char == 'B' || last_char == 'C')
{
//perform action here
}
Using switch statement
使用 switch statement
switch (last_char)
{
case 'A':
case 'B':
case 'C':
// perform action here
break
}
回答by oscilatingcretin
I like using Linq:
我喜欢使用 Linq：
YourString.Last()
YourString.Last()
You'll need to import the System.Linq namespace if you don't have it already. I wouldn't import the namespace just to use .Last(), though.
如果您还没有 System.Linq 命名空间，则需要导入它。不过，我不会仅仅为了使用 .Last() 而导入命名空间。
