# GrapeCity.Documents.Excel.Drawing.ITrendlines

## Content

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



  <h1 id="GrapeCity_Documents_Excel_Drawing_ITrendlines" data-uid="GrapeCity.Documents.Excel.Drawing.ITrendlines" class="text-break">ITrendlines Interface
</h1>
  <div class="markdown level0 summary"><p>Represents a collection of all <a class="xref" href="GrapeCity.Documents.Excel.Drawing.ITrendline.html">ITrendline</a> objects for the specified series.
Each Trendline object represents a trendline in a chart. A trendline shows the trend,
or direction, of data in a series.</p>
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  <div class="markdown level0 conceptual"></div>
  <h6><strong>Namespace</strong>: <a class="xref" href="GrapeCity.Documents.Excel.Drawing.html">GrapeCity.Documents.Excel.Drawing</a></h6>
  <h6><strong>Assembly</strong>: DS.Documents.Excel.dll</h6>
  <h5 id="GrapeCity_Documents_Excel_Drawing_ITrendlines_syntax">Syntax</h5>
  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public interface ITrendlines : IEnumerable&lt;ITrendline&gt;, IEnumerable</code></pre>
  </div>
  <div class="codewrapper">
    <pre><code class="lang-vbnet hljs">Public Interface ITrendlines
    Inherits IEnumerable(Of ITrendline), IEnumerable</code></pre>
  </div>
  <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="GrapeCity_Documents_Excel_Drawing_ITrendlines_Count" data-uid="GrapeCity.Documents.Excel.Drawing.ITrendlines.Count">
          <a class="xref" href="GrapeCity.Documents.Excel.Drawing.ITrendlines.Count.html#GrapeCity_Documents_Excel_Drawing_ITrendlines_Count">Count</a>
        </td>
        <td class="markdown level1 summary"><p>Returns the number of objects in the collection.</p>
</td>
      </tr>
      <tr>
        <td id="GrapeCity_Documents_Excel_Drawing_ITrendlines_Item_System_Int32_" data-uid="GrapeCity.Documents.Excel.Drawing.ITrendlines.Item(System.Int32)">
          <a class="xref" href="GrapeCity.Documents.Excel.Drawing.ITrendlines.Item.html#GrapeCity_Documents_Excel_Drawing_ITrendlines_Item_System_Int32_">this[int]</a>
        </td>
        <td class="markdown level1 summary"><p>Returns a single object from a collection.</p>
</td>
      </tr>
      <tr>
        <td id="GrapeCity_Documents_Excel_Drawing_ITrendlines_Parent" data-uid="GrapeCity.Documents.Excel.Drawing.ITrendlines.Parent">
          <a class="xref" href="GrapeCity.Documents.Excel.Drawing.ITrendlines.Parent.html#GrapeCity_Documents_Excel_Drawing_ITrendlines_Parent">Parent</a>
        </td>
        <td class="markdown level1 summary"><p>Returns the parent object for the specified object.</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="GrapeCity_Documents_Excel_Drawing_ITrendlines_Add" data-uid="GrapeCity.Documents.Excel.Drawing.ITrendlines.Add">
          <a class="xref" href="GrapeCity.Documents.Excel.Drawing.ITrendlines.Add.html#GrapeCity_Documents_Excel_Drawing_ITrendlines_Add">Add()</a>
        </td>
        <td class="markdown level1 summary"><p>Creates a new trendline.</p>
</td>
      </tr>
    </tbody>
  </table>

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