C#基础 索引器及其重载代码示例
class Animal
{
private Dictionary<string, int> indexer1 = new Dictionary<string, int>();
private string[] indexer2 = new string[10];
//从indexer1取值的索引器
public int this[string index]
{
get
{
if (indexer1.ContainsKey(index))
return indexer1[index];
else
throw new Exception("未找到对应值");
}
set
{
if (indexer1.ContainsKey(index))
indexer1[index] = value;
else
indexer1.Add(index, value);
}
}
//从indexer2取值的索引器
public string this[int index]
{
get
{
if (index < 10 && !string.IsNullOrEmpty(indexer2[index]))
return indexer2[index];
else if (index >= 10)
throw new IndexOutOfRangeException();
else
throw new Exception("未找到对应值");
}
set
{
if (index < 10)
indexer2[index] = value;
else
throw new IndexOutOfRangeException();
}
}
}
class Program
{
static void Main(string[] args)
{
Animal animal = new Animal();
//第一个索引器
animal["Fish"] = 20;
animal["Tiger"] = 100;
animal["Mouse"] = 5;
//第二个索引器
animal[1] = "Dog";
animal[2] = "Cat";
animal[3] = "Bird";
}
}
posted on
2017-12-11 20:01
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转载于:https://www.cnblogs.com/vsSure/p/8024802.html
