怎样知道一个盘的大小，没有使用的空间有多大？

Question

怎样知道一个盘的大小，没有使用的空间有多大？，比如我想知道c盘有多大，目前有多少闲置空间

Answer 1

using System;
using System.IO;class Test 
{
    public static void Main() 
    {
        // Specify the directories you want to manipulate.
        DirectoryInfo di = new DirectoryInfo(@"c:\MyDir");
        try 
        {
            // Determine whether the directory exists.
            if (di.Exists) 
            {
                // Indicate that the directory already exists.
                Console.WriteLine("That path exists already.");
                return;
            }            // Try to create the directory.
            di.Create();
            Console.WriteLine("The directory was created successfully.");            // Delete the directory.
            di.Delete();
            Console.WriteLine("The directory was deleted successfully.");        } 
        catch (Exception e) 
        {
            Console.WriteLine("The process failed: {0}", e.ToString());
        } 
        finally {}
    }
}
[C++] 
#using <mscorlib.dll>using namespace System;
using namespace System::IO;void main() {
    // Specify the directories you want to manipulate.
    DirectoryInfo* di = new DirectoryInfo(S"c:\\MyDir");
    try {
        // Determine whether the directory exists.
        if (di->Exists) {
            // Indicate that the directory already exists.
            Console::WriteLine(S"That path exists already.");
            return;
        }        // Try to create the directory.
        di->Create();
        Console::WriteLine(S"The directory was created successfully.");        // Delete the directory.
        di->Delete();
        Console::WriteLine(S"The directory was deleted successfully.");
    } catch (Exception* e) {
        Console::WriteLine(S"The process failed: {0}", e);
    } 
}