title: vb.net Strings.StrConv Convert Simplified Chinese to Traditional Chinese shows some "?"
body: <p>When using Strings.StrConv to convert simplified chinese to traditional chinese, it returns some word(s) as a "?".</p>
  
  <pre><code>Dim input as String = "简体中文";
  Dim output as String = Strings.StrConv(input, VbStrConv.TraditionalChinese);  
  messageBox.show("input[" &amp; input  &amp; "] output[" &amp; output &amp; "]")
  </code></pre>
  
  <p>Expected result:
  input[简体中文] output[簡體中文]</p>
  
  <p>Got result:
  input[简体中文] output[?體中文]</p>
  
  <p>I only get this problem on convering simplified chinese to traditional chinese, but without problem vise versa.
  Could someone help if you know how to fix this?</p>