# CSJ2K.j2k.codestream.reader.HeaderDecoder.OPT_PREFIX

## Content

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<h1 id="CSJ2K_j2k_codestream_reader_HeaderDecoder_OPT_PREFIX" data-uid="CSJ2K.j2k.codestream.reader.HeaderDecoder.OPT_PREFIX" class="text-break">OPT_PREFIX Field
</h1>
<div class="markdown level0 summary"><p>The prefix for header decoder options: 'H'</p>
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<div class="markdown level0 conceptual"></div>
<h6><strong>Namespace</strong>: <a class="xref" href="CSJ2K.j2k.codestream.reader.html">CSJ2K.j2k.codestream.reader</a></h6>
<h6><strong>Assembly</strong>: C1.WPF.ReportViewer.4.6.2.dll</h6>
<h5 id="CSJ2K_j2k_codestream_reader_HeaderDecoder_OPT_PREFIX_syntax">Syntax</h5>
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  <pre><code class="lang-csharp hljs">public const char OPT_PREFIX = &#39;H&#39;</code></pre>
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  <pre><code class="lang-vbnet hljs">Public Const OPT_PREFIX As Char = &quot;H&quot;c</code></pre>
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<h5 class="returns">Returns</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Type</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.char">char</a></td>
      <td>The prefix for header decoder options: 'H'</td>
    </tr>
  </tbody>
</table>
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