title: Get A random keyValue from Hashtable
body: <p>I Have a Hashtable that I dont know What is the content of .</p>
  
  <p>now I want to get one Key and value from it;</p>
  
  <p>I use hashtable because of its speed because content of hashtable is over 4,500,000 KeyValuePair so I cant use GetEnumerator its reduce program speed</p>