# GrapeCity.Spreadsheet.IWorkbook.ApplyTheme

## Content

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



<h1 id="GrapeCity_Spreadsheet_IWorkbook_ApplyTheme_" data-uid="GrapeCity.Spreadsheet.IWorkbook.ApplyTheme*">ApplyTheme Method
</h1>
<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="GrapeCity_Spreadsheet_IWorkbook_ApplyTheme_" data-uid="GrapeCity.Spreadsheet.IWorkbook.ApplyTheme*"></a>
<h4 id="GrapeCity_Spreadsheet_IWorkbook_ApplyTheme_GrapeCity_Core_Theme_" data-uid="GrapeCity.Spreadsheet.IWorkbook.ApplyTheme(GrapeCity.Core.Theme)">ApplyTheme(Theme)</h4>
<div class="markdown level1 summary"><p>Applies the specified theme to the current workbook.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
<div class="codewrapper">
  <pre><code class="lang-csharp hljs">bool ApplyTheme(Theme theme = null)</code></pre>
</div>
<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Function ApplyTheme(Optional theme As Theme = Nothing) As Boolean</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="GrapeCity.Core.Theme.html">Theme</a></td>
      <td><span class="parametername">theme</span></td>
      <td><p>A <a class="xref" href="GrapeCity.Spreadsheet.IWorkbook.Theme.html#GrapeCity_Spreadsheet_IWorkbook_Theme">Theme</a> object indicates the theme to apply.</p>
</td>
    </tr>
  </tbody>
</table>
<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.boolean">bool</a></td>
      <td><p><code>true</code> if the theme is applied successfully; otherwise, <code>false</code>.</p>
</td>
    </tr>
  </tbody>
</table>


<a id="GrapeCity_Spreadsheet_IWorkbook_ApplyTheme_" data-uid="GrapeCity.Spreadsheet.IWorkbook.ApplyTheme*"></a>
<h4 id="GrapeCity_Spreadsheet_IWorkbook_ApplyTheme_System_String_" data-uid="GrapeCity.Spreadsheet.IWorkbook.ApplyTheme(System.String)">ApplyTheme(string)</h4>
<div class="markdown level1 summary"><p>Applies the specified theme to the current workbook.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
<div class="codewrapper">
  <pre><code class="lang-csharp hljs">bool ApplyTheme(string filename = null)</code></pre>
</div>
<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Function ApplyTheme(Optional filename As String = Nothing) As Boolean</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">filename</span></td>
      <td><p>A string value indicates the theme file to apply.</p>
</td>
    </tr>
  </tbody>
</table>
<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.boolean">bool</a></td>
      <td><p><code>true</code> if the theme is loaded and applied successfully; otherwise, <code>false</code>.</p>
</td>
    </tr>
  </tbody>
</table>


<a id="GrapeCity_Spreadsheet_IWorkbook_ApplyTheme_" data-uid="GrapeCity.Spreadsheet.IWorkbook.ApplyTheme*"></a>
<h4 id="GrapeCity_Spreadsheet_IWorkbook_ApplyTheme_System_IO_Stream_" data-uid="GrapeCity.Spreadsheet.IWorkbook.ApplyTheme(System.IO.Stream)">ApplyTheme(Stream)</h4>
<div class="markdown level1 summary"><p>Applies the specified theme to the current workbook.</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
<div class="codewrapper">
  <pre><code class="lang-csharp hljs">bool ApplyTheme(Stream stream)</code></pre>
</div>
<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Function ApplyTheme(stream As Stream) As Boolean</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.io.stream">Stream</a></td>
      <td><span class="parametername">stream</span></td>
      <td><p>A <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.io.stream">Stream</a> object indicates the theme data to apply.</p>
</td>
    </tr>
  </tbody>
</table>
<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.boolean">bool</a></td>
      <td><p><code>true</code> if the theme is loaded and applied successfully; otherwise, <code>false</code>.</p>
</td>
    </tr>
  </tbody>
</table>
</div>