Question

C＃中是否可以将数组返回给调用程序？如果不可能，请说这不可能。另一种方法是创建一个长字符串并使用string.split（）。但那看起来并不好看。 ExamnationOfReturnsFiled（“ABCDE1234E”）//调用程序。

public  yearsfiled[] ExamnationOfReturnsFiled(string panreceived) //function.
{            
    int k = 0; //to increment the array element.
    string item = panreceived; //string value received call program.

    string[] yearsfiled = new string[20];//Declaring a string array.
    Regex year = new Regex(@"[0-9]{4}-[0-9]{2}");//to capture 2012-13 like entries.
    using (StreamReader Reader1 = new StreamReader(@"C: \Users\Unnikrishnan C\Documents\Combined_Blue_Book.txt"))
    {
        Regex tofindpan = new Regex(item);//Regular Expression to catch the string from the text file being read.
        bool tosearch = false;
        Regex blank = new Regex(@"^\s*$"); //to detect a blank line.
        while ((str.line1 = Reader1.ReadLine()) != null)
        {
            Match Tofindpan = tofindpan.Match(@"[A-Z]{5}[0-9]{4}[A-Z]{1}");
            Match Blank = blank.Match(line1);
            if (Blank.Success)
            {
                tosearch = false;
            }
            if (Tofindpan.Success)
            {
               tosearch = true; //when true the 
            }
            if (tosearch == true)
            {
               Match Year = year.Match(str.line1);
               if (Year.Success)
               {
                   yearsfiled[k] = Year.Value;
                   k++;
               }
            }
        }
        return yearsfiled;
    }

}

Answer 1

public string[] ExamnationOfReturnsFiled(string panreceived) //功能

您正在返回类型而不是变量名称更改上面的方法签名

Answer 2

您应该返回yearsfiled[]。您的返回类型> python Python 2.7.10 (default, Oct 23 2015, 19:19:21) [GCC 4.2.1 Compatible Apple LLVM 7.0.0 (clang-700.0.59.5)] on darwin Type "help", "copyright", "credits" or "license" for more information. >>> import six >>> import xhtml2pdf.pisa Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/Library/Python/2.7/site-packages/xhtml2pdf/pisa.py", line 3, in <module> from xhtml2pdf.document import pisaDocument File "/Library/Python/2.7/site-packages/xhtml2pdf/document.py", line 2, in <module> from xhtml2pdf.context import pisaContext File "/Library/Python/2.7/site-packages/xhtml2pdf/context.py", line 23, in <module> import xhtml2pdf.parser File "/Library/Python/2.7/site-packages/xhtml2pdf/parser.py", line 17, in <module> from html5lib import treebuilders, inputstream File "/Library/Python/2.7/site-packages/html5lib/__init__.py", line 16, in <module> from .html5parser import HTMLParser, parse, parseFragment File "/Library/Python/2.7/site-packages/html5lib/html5parser.py", line 2, in <module> from six import with_metaclass, viewkeys, PY3 ImportError: cannot import name viewkeys >>> exit()是变量名称，而不是类型名称

Answer 3

//来自调用程序。经过测试并成功。

string[] yearsfiled = new string[20];
yearsfiled = ExamnationOfReturnsFiled(item1);

//函数名称修改如下。

public static string[] ExamnationOfReturnsFiled(string panreceived)
{
  Everything else as in the original post.
}

//经过测试。并发现成功。非常感谢@Midhun Mundayadan和@Eavidan。

在C＃中是否可以将数组返回给调用程序？

3 个答案: