# C1.Win.C1Win7Pack.C1TaskbarButton.RegisterFileAssociations

## Content

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



<h1 id="C1_Win_C1Win7Pack_C1TaskbarButton_RegisterFileAssociations_" data-uid="C1.Win.C1Win7Pack.C1TaskbarButton.RegisterFileAssociations*">RegisterFileAssociations Method
</h1>
<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="C1_Win_C1Win7Pack_C1TaskbarButton_RegisterFileAssociations_" data-uid="C1.Win.C1Win7Pack.C1TaskbarButton.RegisterFileAssociations*"></a>
<h4 id="C1_Win_C1Win7Pack_C1TaskbarButton_RegisterFileAssociations_System_String_System_String_System_String_System_String___" data-uid="C1.Win.C1Win7Pack.C1TaskbarButton.RegisterFileAssociations(System.String,System.String,System.String,System.String[])">RegisterFileAssociations(string, string, string, params string[])</h4>
<div class="markdown level1 summary"><p>Registers file associations for the current application.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
<div class="codewrapper">
  <pre><code class="lang-csharp hljs">public void RegisterFileAssociations(string friendlyName, string defaultIcon, string openWithCmd, params string[] extensions)</code></pre>
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<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Public Sub RegisterFileAssociations(friendlyName As String, defaultIcon As String, openWithCmd As String, ParamArray extensions As String())</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Type</th>
      <th>Name</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.string">string</a></td>
      <td><span class="parametername">friendlyName</span></td>
      <td><p>A friendly name for the data format, suitable to display to a user.</p>
</td>
    </tr>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.string">string</a></td>
      <td><span class="parametername">defaultIcon</span></td>
      <td><p>The path to the default icon, such as, &quot;%systemroot%\system32\imageres.dll,15&quot;.</p>
</td>
    </tr>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.string">string</a></td>
      <td><span class="parametername">openWithCmd</span></td>
      <td><p>The command and arguments to be used when opening a shortcut to a document, such as,
'&quot;C:\Program Files\Paint.NET\PaintDotNet.exe&quot; &quot;%1&quot;'.</p>
</td>
    </tr>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.string">string</a>[]</td>
      <td><span class="parametername">extensions</span></td>
      <td><p>The extensions to register, such as '.png'.</p>
</td>
    </tr>
  </tbody>
</table>


<a id="C1_Win_C1Win7Pack_C1TaskbarButton_RegisterFileAssociations_" data-uid="C1.Win.C1Win7Pack.C1TaskbarButton.RegisterFileAssociations*"></a>
<h4 id="C1_Win_C1Win7Pack_C1TaskbarButton_RegisterFileAssociations_System_Boolean_System_String_System_String_System_String_System_String___" data-uid="C1.Win.C1Win7Pack.C1TaskbarButton.RegisterFileAssociations(System.Boolean,System.String,System.String,System.String,System.String[])">RegisterFileAssociations(bool, string, string, string, params string[])</h4>
<div class="markdown level1 summary"><p>Registers file associations for the current application.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
<div class="codewrapper">
  <pre><code class="lang-csharp hljs">public void RegisterFileAssociations(bool forCurrentUser, string friendlyName, string defaultIcon, string openWithCmd, params string[] extensions)</code></pre>
</div>
<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Public Sub RegisterFileAssociations(forCurrentUser As Boolean, friendlyName As String, defaultIcon As String, openWithCmd As String, ParamArray extensions As String())</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Type</th>
      <th>Name</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.boolean">bool</a></td>
      <td><span class="parametername">forCurrentUser</span></td>
      <td><p>Specifies whether the file associations should be registered in HKEY_CURRENT_USER, not in HKEY_CLASSES_ROOT which requires elevated privileges.</p>
</td>
    </tr>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.string">string</a></td>
      <td><span class="parametername">friendlyName</span></td>
      <td><p>A friendly name for the data format, suitable to display to a user.</p>
</td>
    </tr>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.string">string</a></td>
      <td><span class="parametername">defaultIcon</span></td>
      <td><p>The path to the default icon, such as, &quot;%systemroot%\system32\imageres.dll,15&quot;.</p>
</td>
    </tr>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.string">string</a></td>
      <td><span class="parametername">openWithCmd</span></td>
      <td><p>The command and arguments to be used when opening a shortcut to a document, such as,
'&quot;C:\Program Files\Paint.NET\PaintDotNet.exe&quot; &quot;%1&quot;'.</p>
</td>
    </tr>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.string">string</a>[]</td>
      <td><span class="parametername">extensions</span></td>
      <td><p>The extensions to register, such as '.png'.</p>
</td>
    </tr>
  </tbody>
</table>
</div>