拆分字符串时出现令人困惑的错误 [英] Confusing error when splitting a string

问题描述

我有这行代码:

string[] ids = Request.Params["service"].Split(",");

Request.Params["service"] 中的值是:"1,2"

为什么我得到:

Error   1   The best overloaded method match for 'string.Split(params char[])' has some invalid arguments
Error   2   Argument 1: cannot convert from 'string' to 'char[]'

这对我来说毫无意义....

This makes no sense to me....

错误发生在等号右边的所有内容

The error happens on everything to the right of the equal sign

推荐答案

你需要传递一个字符(System.Char)，而不是一个string:

You need to pass a character (System.Char), not a string:

string[] ids = Request.Params["service"].Split(',');

String.Split<没有过载/a> 接受一个 params string[] 或单个 string，这是使您的代码工作所必需的.

There is no overload to String.Split that takes a params string[] or a single string, which is what would be required to make your code work.

如果你想用一个字符串(或多个字符串)分割，你需要使用 string[] 并指定分割选项:

If you wanted to split with a string (or multiple strings), you would need to use a string[] and specify splitting options:

string[] ids = Request.Params["service"].Split(new[]{","}, StringSplitOptions.None);

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