C＃如何将环境变量作为字符串返回

Question

in C#, I want to get the list of environment variables, and turn them into strings. however, when I exectute the code, I get error:

Embedded statement cannot be a declaration or labeled statement

at string teststring = de.Value;

using System;
using System.Collections;
using System.IO;

class Sample
{

public static void Main()
{
    Console.WriteLine();
    Console.WriteLine("GetEnvironmentVariables: ");
    foreach (DictionaryEntry de in Environment.GetEnvironmentVariables())
        string teststring = de.Value;
        string testpath = String.Format("\nValue as string: ",teststring);
        Console.WriteLine(testpath);
        Console.WriteLine("\n  {0} = {1}", de.Key, de.Value);       
}
}    

how can I fix this, and why is this error occurring?

Answer 1

You need put { and } around your foreach block, because :

1. You have 2 variables declaration
2. You have more than 1 line of statement

---

public static void Main()
{
    Console.WriteLine();
    Console.WriteLine("GetEnvironmentVariables: ");
    foreach (DictionaryEntry de in Environment.GetEnvironmentVariables())
    {
        string teststring = de.Value;
        string testpath = String.Format("\nValue as string: ",teststring);
        Console.WriteLine(testpath);
        Console.WriteLine("\n  {0} = {1}", de.Key, de.Value);
    }
}