Storing in a nested dictionary C#
Broadcom
Connection Name: Local Area Connection
DHCP Enabled: No
IP address(es)
[01]: abc.de.fg.h
I would like to put this into a Dictionary<string, Dictionary <string, string>>
So Broadcom would be the key in the first dictionary and the rest would be value the value. The value should be stored as a dictionary where Connection Name is the key and Local Area Connection is the value. How do I 开发者_如何学Pythongo about doing that? I am new to programming. Thanks for the help.
Please do yourself a great favour and use a class for that, because in two months time you will not understand your code:
public class WhatIsThis {
private List<IPAddress> ipAddresses = new List<IPAddress>();
public string Name { get; set; }
public string ConnectionName { get; set; }
public bool DHCPEnabled { get; set; }
public List<IPAddress> IPAddresses { get return ipAddresses; }
}
Now you can keep a List<WhatIsThis>
around. If you have justa few of them, the O(n) cost of looking a value up is negligible. If you want a lookup by name in O(1) fashion, you can map to a Dictionary as such:
var dict = listOfWhatisThis.ToDictionary(k=>k.Name, v=>v}
Gives you a Dictionary of type Dictionary<string,WhatIsThis>
. What do you think, will you understand this better in 2 weeks time, or rather your scary Dictionary?
http://msdn.microsoft.com/en-us/library/bb531208.aspx
var dic = new dictionary<string, dictionary <string, string>>(
{"Broadcom",
new dictionary <string, string>(
{
{"Connection Name", "Local Area Connection"},
{"DHCP Enabled", "No"},
{"IP address(es) [01]", "abc.de.fg.h"}
}
)
}
);
My only concern would be that the IP Addresses should themselves be in a dictionary within the settings for a connection, not a single string, and thus the sub-dictionary would need to be dictionary<string, object>
.
Similar to flq's answer, here's a more comprehensive solution which makes both subdictionaries:
using System.Collections.Generic;
using System.Linq;
namespace LINQDictionaryDemo
{
public class IPAddress
{
public int Index { get; private set; }
public string Value { get; private set; }
public IPAddress(int Index, string Value)
{
this.Index = Index;
this.Value = Value;
}
}
public class NetworkConnection
{
public string Name { get; set; }
public string ConnectionName { get; set; }
public bool DHCPEnabled { get; set; }
public List<IPAddress> IPAddresses { get; set; }
public Dictionary<string, object> ToDictionary()
{
return new Dictionary<string, object>
{
{ "ConnectionName", ConnectionName }
, { "DHCPEnabled", DHCPEnabled.ToString() }
, {"IPAddresses", IPAddresses.ToDictionary(k => k.Index, v => v.Value)}
};
}
}
public static class Demo
{
public static void Run()
{
var lnc = new List<NetworkConnection>
{
new NetworkConnection
{
Name = "Broadcom",
ConnectionName = "Local Area Connection",
DHCPEnabled = false,
IPAddresses = new List<IPAddress> {new IPAddress(1, "abc.de.fg.h")}
}
};
var dic = lnc.ToDictionary(k => k.Name, v => v.ToDictionary());
}
}
}
精彩评论