title: ViewState .Add(.... or ViewState["XXXXX"] is efficient ?
body: <p>I have a reasonable dout,</p>
  
  <p><code>ViewState .Add(....</code> or <code>ViewState["XXXXX"]</code> is efficient ? </p>
  
  <p>Eg.</p>
  
  <p>1). </p>
  
  <pre><code>ViewState.Add("Example1", value );
  </code></pre>
  
  <p>2). </p>
  
  <pre><code>ViewState["Example1"]=value;
  </code></pre>
  
  <p>Both gives the same output, 1st one add the Value to the <code>NameValueCollection</code> if that <code>Key</code> does not exists.</p>
  
  <p>2nd also does the same. Is there any difference in both. ?</p>