一个简单的类的继承的写法(C#)

u 一个简单的类的继承的写法(C#)

public class HashTable : Hashtable

{

public HashTable()

{}

public override object this[object key]

{

get

{

try

{

key = key.ToString().ToLower();

}

catch(Exception ex)

{}

return base[key];

}

set

{

try

{

key = key.ToString().ToLower();

}

catch(Exception ex)

{}

base[key] = value;

}

}

public override void Add(object key, object value)

{

try

{

key = key.ToString().ToLower();

}

catch(Exception ex)

{}

base.Add (key, value);

}

public override void Clear()

{

base.Clear ();

}

public override void Remove(object key)

{

try

{

key = key.ToString().ToLower();

}

catch(Exception ex)

{}

base.Remove (key);

}

public override IDictionaryEnumerator GetEnumerator()

{

return base.GetEnumerator();

}

public override bool Contains(object key)

{

try

{

key = key.ToString().ToLower();

}

catch(Exception ex)

{}

return base.Contains (key);

}

public override bool ContainsKey(object key)

{

try

{

key = key.ToString().ToLower();

}

catch(Exception ex)

{}

return base.ContainsKey (key);

}

}

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