c#:如何从 List<person> 中的特定索引读取 [英] c# : how to read from specific index in List<person>
问题描述
我有一类人和列表集合,因为列表包含人类的所有值比如:
I have a class of persons and list collection as list contains all the values of person class such as :
列表 ilist 有 2 个值 [0]={firstname,lastname} .[1]={firstname2,lastname2}
List ilist has 2 values [0]={firstname,lastname} . [1]={firstname2,lastname2}
现在,当我迭代列表时,我可以打印列表,但我想更改列表某些部分的值,例如在索引 1 中,如果我想将 firstname2 的值更改为 firstname3,我无法去做吧 .谁能告诉我如何打印列表,然后在该索引上更改索引的任何值,即 person 类中的 firstname 和 secondname 变量,以便我可以更新我的值谢谢
now when i am iterating into the list i am able to print the list but i want to change the value of some parts of my list e.g in index 1 if i want to change the value of firstname2 to firstname3 i am not able to do it . Can anyone tell me how to print the list and then on that index changing any value of the index , i.e. firstname and secondname variable in the person class so that i can update my values Thanks
推荐答案
根据 msdn 上的文档,您可以使用熟悉的索引运算符(就像您在数组上使用的那样).所以 myList[1].lastname = "new last name";
应该为你做.
According to the docs on msdn you can use the familiar index operator (like on what you use on arrays). So myList[1].lastname = "new last name";
should do it for you.
文档在这里;http://msdn.microsoft.com/en-us/library/0ebtbkkc.aspx
请记住,您需要在访问前进行边界检查.
Keep in mind you need to do bounds checking before access.
这篇关于c#:如何从 List<person> 中的特定索引读取的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!