程序代码汇总第9章原书P166-P167 代码
public class IPAddresses : DictionaryBase
{
public IPAddresses()
{
}
public void Add(string name, string ip)
{
base.InnerHashtable.Add(name, ip);
}
public string Item(string name)
{
ret...
原书P166-P167 代码
public class IPAddresses : DictionaryBase
{
public IPAddresses()
{
}
public void Add(string name, string ip)
{
base.InnerHashtable.Add(name, ip);
}
public string Item(string name)
{
return base.InnerHashtable[name].ToString();
}
public void Remove(string name)
{
base.InnerHashtable.Remove(name);
}
}
原书P167-P168 代码
class chapter9
{
static void Main()
{
IPAddresses myIPs = new IPAddresses();
myIPs.Add("Mike", "192.155.12.1");
myIPs.Add("David", "192.155.12.2");
myIPs.Add("Bernica", "192.155.12.3");
Console.WriteLine("There are " + myIPs.Count + " IP addresses");
Console.WriteLine("David's ip address: " + myIPs.Item("David"));
myIPs.Clear();
Console.WriteLine("There are " + myIPs.Count + " IP addresses");
}
}
原书P168 代码2
public IPAddresses(string txtFile)
{
string line;
string[] words;
StreamReader inFile;
inFile = File.OpenText(txtFile);
while (inFile.Peek() != -1)
{
line = inFile.ReadLine();
words = line.Split(',');
this.InnerHashtable.Add(words[0], words[1]);
}
inFile.Close();
}
原书P168-P169 代码
class chapter9
{
static void Main()
{
for (int i = 0; i < 4; i++)
Console.WriteLine();
IPAddresses myIPs = new IPAddresses(@"c:\data\ips.txt");
Console.WriteLine("There are {0} IP addresses", myIPs.Count);
Console.WriteLine("David's IP address: " + myIPs.Item("David"));
Console.WriteLine("Bernica's IP address: " + myIPs.Item("Bernica"));
Console.WriteLine("Mike's IP address: " + myIPs.Item("Mike"));
}
}
原书P169 代码2
IPAddresses myIPs = new IPAddresses(@"c:\ips.txt");
DictionaryEntry[] ips = new DictionaryEntry[myIPs.Count-1];
myIPs.CopyTo(ips, 0);
原书P170 代码1
for (int i = 0; i <= ips.GetUpperBound(0); i++)
Console.WriteLine(ips[i].ToString());
原书P170 代码2
Console.WriteLine(ips[index].ToString());
原书P170 代码3
for(int i = 0; i <= ips.GetUpperBound(0); i++)
{
Console.WriteLine(ips[index].Key);
Console.WriteLine(ips[index].Value);
}
原书P171 代码1
KeyValuePair mcmillan = new KeyValuePair("McMillan", 99);
原书P171 代码2
Console.Write(mcmillan.Key);
Console.Write(" " + mcmillan.Value);
原书P171-P172 代码
using System;
using System.Collections.Generic;
using System.Text;
namespace Generics
{
class Program
{
static void Main(string[] args)
{
KeyValuePair[] gradeBook = new KeyValuePair[10];
gradeBook[0] = new KeyValuePair("McMillan", 99);
gradeBook[1] = new KeyValuePair("Ruff", 64);
for (int i = 0; i <= gradeBook.GetUpperBound(0); i++)
if (gradeBook[i].Value != 0)
Console.WriteLine(gradeBook[i].Key + ": " + gradeBook[i].Value);
Console.Read();
}
}
}
原书P172 代码2
SortedList myips = new SortedList();
myips.Add("Mike", "192.155.12.1");
myips.Add("David", "192.155.12.2");
myips.Add("Bernica", "192.155.12.3");
原书P173 代码1
SortedList
原书P173 代码2
SortedList myips = new SortedList();
原书P173 代码3
SortedList gradeBook = new SortedList();
原书P173 代码4
foreach(Object key in myips.Keys)
Console.WriteLine("Name: " + key + "\n" + "IP: " + myips[key]);
原书P173 代码5
for(int i = 0; i < myips.Count; i++)
Console.WriteLine("Name: " + myips.GetKey(i) + "\n" + "IP: " + myips.GetByIndex(i));
原书P174 代码1
myips.Remove("David");
myips.RemoveAt(1);
原书P174 代码2
int indexDavid = myips.IndexOfKey("David");
int indexIPDavid = myips.IndexOfValue(myips["David"]);
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