# C1.Win.C1DynamicHelp.Providers.ChmProvider

## Content

<div class="doc-site-dotnet-api-container">



  <h1 id="C1_Win_C1DynamicHelp_Providers_ChmProvider" data-uid="C1.Win.C1DynamicHelp.Providers.ChmProvider" class="text-break">ChmProvider Class
</h1>
  <div class="markdown level0 summary"><p>The class providing the <a class="xref" href="C1.Win.C1DynamicHelp.Providers.IHelpProvider.html">IHelpProvider</a> functionality for HTML Help (.chm files).</p>
</div>
  <div class="markdown level0 conceptual"></div>
  <div class="inheritance">
    <h5>Inheritance</h5>
    <div class="level0"><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object">object</a></div>
    <div class="level1"><span class="xref">ChmProvider</span></div>
  </div>
  <div class="implements">
    <h5>Implements</h5>
    <div><a class="xref" href="C1.Win.C1DynamicHelp.Providers.IHelpProvider.html">IHelpProvider</a></div>
  </div>
  <h6><strong>Namespace</strong>: <a class="xref" href="C1.Win.C1DynamicHelp.Providers.html">C1.Win.C1DynamicHelp.Providers</a></h6>
  <h6><strong>Assembly</strong>: C1.Win.C1DynamicHelp.4.8.dll</h6>
  <h5 id="C1_Win_C1DynamicHelp_Providers_ChmProvider_syntax">Syntax</h5>
  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public class ChmProvider : IHelpProvider</code></pre>
  </div>
  <div class="codewrapper">
    <pre><code class="lang-vbnet hljs">Public Class ChmProvider
    Implements IHelpProvider</code></pre>
  </div>
  <h3 id="constructors">Constructors
</h3>
  <table class="table table-bordered table-condensed">
    <thead>
      <tr>
        <th>Name</th>
        <th>Description</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td id="C1_Win_C1DynamicHelp_Providers_ChmProvider__ctor" data-uid="C1.Win.C1DynamicHelp.Providers.ChmProvider.#ctor">
          <a class="xref" href="C1.Win.C1DynamicHelp.Providers.ChmProvider.-ctor.html#C1_Win_C1DynamicHelp_Providers_ChmProvider__ctor">ChmProvider()</a>
        </td>
        <td class="markdown level1 summary"></td>
      </tr>
    </tbody>
  </table>
  <h3 id="properties">Properties
</h3>
  <table class="table table-bordered table-condensed">
    <thead>
      <tr>
        <th>Name</th>
        <th>Description</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td id="C1_Win_C1DynamicHelp_Providers_ChmProvider_Source" data-uid="C1.Win.C1DynamicHelp.Providers.ChmProvider.Source">
          <a class="xref" href="C1.Win.C1DynamicHelp.Providers.ChmProvider.Source.html#C1_Win_C1DynamicHelp_Providers_ChmProvider_Source">Source</a>
        </td>
        <td class="markdown level1 summary"><p>Gets or sets the help file.</p>
</td>
      </tr>
    </tbody>
  </table>
  <h3 id="methods">Methods
</h3>
  <table class="table table-bordered table-condensed">
    <thead>
      <tr>
        <th>Name</th>
        <th>Description</th>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td id="C1_Win_C1DynamicHelp_Providers_ChmProvider_CorrectUrl_System_String_" data-uid="C1.Win.C1DynamicHelp.Providers.ChmProvider.CorrectUrl(System.String)">
          <a class="xref" href="C1.Win.C1DynamicHelp.Providers.ChmProvider.CorrectUrl.html#C1_Win_C1DynamicHelp_Providers_ChmProvider_CorrectUrl_System_String_">CorrectUrl(string)</a>
        </td>
        <td class="markdown level1 summary"><p>Checks whether the URL is in correct format and corrects it if necessary.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_C1DynamicHelp_Providers_ChmProvider_GetCtxtIdMap" data-uid="C1.Win.C1DynamicHelp.Providers.ChmProvider.GetCtxtIdMap">
          <a class="xref" href="C1.Win.C1DynamicHelp.Providers.ChmProvider.GetCtxtIdMap.html#C1_Win_C1DynamicHelp_Providers_ChmProvider_GetCtxtIdMap">GetCtxtIdMap()</a>
        </td>
        <td class="markdown level1 summary"><p>Returns a dictionary of help topics indexed by their context IDs
(contains only topics that have context ids).</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_C1DynamicHelp_Providers_ChmProvider_GetFullUrl_System_String_" data-uid="C1.Win.C1DynamicHelp.Providers.ChmProvider.GetFullUrl(System.String)">
          <a class="xref" href="C1.Win.C1DynamicHelp.Providers.ChmProvider.GetFullUrl.html#C1_Win_C1DynamicHelp_Providers_ChmProvider_GetFullUrl_System_String_">GetFullUrl(string)</a>
        </td>
        <td class="markdown level1 summary"><p>Returns a URL in a specific for the help provider format that can be displayed by the C1DynamicHelp control.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_C1DynamicHelp_Providers_ChmProvider_GetTopics" data-uid="C1.Win.C1DynamicHelp.Providers.ChmProvider.GetTopics">
          <a class="xref" href="C1.Win.C1DynamicHelp.Providers.ChmProvider.GetTopics.html#C1_Win_C1DynamicHelp_Providers_ChmProvider_GetTopics">GetTopics()</a>
        </td>
        <td class="markdown level1 summary"><p>Returns a hierarchical list of topics in the help file.</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_C1DynamicHelp_Providers_ChmProvider_GetUrlMap" data-uid="C1.Win.C1DynamicHelp.Providers.ChmProvider.GetUrlMap">
          <a class="xref" href="C1.Win.C1DynamicHelp.Providers.ChmProvider.GetUrlMap.html#C1_Win_C1DynamicHelp_Providers_ChmProvider_GetUrlMap">GetUrlMap()</a>
        </td>
        <td class="markdown level1 summary"><p>Returns a dictionary of help topics indexed by their URLs (contains all topics).</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_C1DynamicHelp_Providers_ChmProvider_ShowExternalHelp_C1_Win_C1DynamicHelp_HelpTab_" data-uid="C1.Win.C1DynamicHelp.Providers.ChmProvider.ShowExternalHelp(C1.Win.C1DynamicHelp.HelpTab)">
          <a class="xref" href="C1.Win.C1DynamicHelp.Providers.ChmProvider.ShowExternalHelp.html#C1_Win_C1DynamicHelp_Providers_ChmProvider_ShowExternalHelp_C1_Win_C1DynamicHelp_HelpTab_">ShowExternalHelp(HelpTab)</a>
        </td>
        <td class="markdown level1 summary"><p>Show help navigation (in a separate window).</p>
</td>
      </tr>
      <tr>
        <td id="C1_Win_C1DynamicHelp_Providers_ChmProvider_ShowExternalHelp_C1_Win_C1DynamicHelp_HelpTab_System_Object_" data-uid="C1.Win.C1DynamicHelp.Providers.ChmProvider.ShowExternalHelp(C1.Win.C1DynamicHelp.HelpTab,System.Object)">
          <a class="xref" href="C1.Win.C1DynamicHelp.Providers.ChmProvider.ShowExternalHelp.html#C1_Win_C1DynamicHelp_Providers_ChmProvider_ShowExternalHelp_C1_Win_C1DynamicHelp_HelpTab_System_Object_">ShowExternalHelp(HelpTab, object)</a>
        </td>
        <td class="markdown level1 summary"><p>Show help navigation (in a separate window).</p>
</td>
      </tr>
    </tbody>
  </table>

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