Hashtable.Count
Description

Returns how many elements are in the hashtable.

// Prints the number of elements in a new Hashtable

var ht : Hashtable; ht = new Hashtable(); Debug.Log("Hashtable has " + ht.Count + " elements.");
using UnityEngine;
using System.Collections;

public class Example : MonoBehaviour {
    public Hashtable ht;
    void Example() {
        ht = new Hashtable();
        Debug.Log("Hashtable has " + ht.Count + " elements.");
    }
}
import UnityEngine
import System.Collections

public class Example(MonoBehaviour):

	public ht as Hashtable

	def Example() as void:
		ht = Hashtable()
		Debug.Log((('Hashtable has ' + ht.Count) + ' elements.'))