title: How to convert from string ( ASCII type) to UTF-8 in C#
body: <p>I have problem when i convert from my string to UTF-8 in C#. These are details:
  I have string as parameter of a method:</p>
  
  <pre><code>void testConvert(string input)
  </code></pre>
  
  <p>And in other method, i call it:</p>
  
  <pre><code>testConvert("\u9ad9");
  </code></pre>
  
  <p>Now, i want to covert it to UTF-8, but because in C#, they realize a slash "\" and replace it to "\\", so my string will be "\\u9ad9".
  With this string, i do not know how to convert it to UTF-8, because if i use it for input in System.Text.UTF8Encoding, it won't recognize. It only process with "\u9ad9".</p>
  
  <p>I try some methods that i searched in this site, but it does not work.</p>
  
  <p>Please help me to resolve this problem !
  Thanks and Best Regards.</p>