static void DisplayHashtable(MyHashtable t)
{
Console.WriteLine("==>> Display Values in Hashtable <<==");
foreach (DictionaryEntry de in t)
{
Console.WriteLine($"key: {de.Key,-10}Value: {de.Value}");
}
Console.WriteLine();
}
static object SearchHashtable(MyHashtable t, int k)
{
// use the Get method and pass to it the key
object value = t.Get(k);
if (value == null)
{
return("key not found");
}
return(value);
}
static void RemoveItemFromHashtable(MyHashtable t, int k)
{
try
{
t.Remove(k);
}
//catch(InvalidOperationException ioe)
catch (ArgumentNullException)
{
Console.WriteLine($"key: {k} not in hashtable!");
}
}