# C1.WPF.FlexGrid.GroupHeaderConverter

## Content

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  <h1 id="C1_WPF_FlexGrid_GroupHeaderConverter" data-uid="C1.WPF.FlexGrid.GroupHeaderConverter" class="text-break">GroupHeaderConverter Class
</h1>
  <div class="markdown level0 summary"><p>Default <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.windows.data.ivalueconverter">IValueConverter</a> used to create the content shown
in <a class="xref" href="C1.WPF.FlexGrid.GroupRow.html">GroupRow</a> cells to summarize group information.</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">GroupHeaderConverter</span></div>
  </div>
  <div class="implements">
    <h5>Implements</h5>
    <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.windows.data.ivalueconverter">IValueConverter</a></div>
  </div>
  <h6><strong>Namespace</strong>: <a class="xref" href="C1.WPF.FlexGrid.html">C1.WPF.FlexGrid</a></h6>
  <h6><strong>Assembly</strong>: C1.WPF.FlexGrid.4.6.2.dll</h6>
  <h5 id="C1_WPF_FlexGrid_GroupHeaderConverter_syntax">Syntax</h5>
  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public class GroupHeaderConverter : IValueConverter</code></pre>
  </div>
  <div class="codewrapper">
    <pre><code class="lang-vbnet hljs">Public Class GroupHeaderConverter
    Implements IValueConverter</code></pre>
  </div>
  <h5 id="C1_WPF_FlexGrid_GroupHeaderConverter_remarks"><strong>Remarks</strong></h5>
  <div class="markdown level0 remarks"><p>To display custom information in group rows, create a class that implements
the <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.windows.data.ivalueconverter">IValueConverter</a> interface and assign an instance of this class
to the <a class="xref" href="C1.WPF.FlexGrid.C1FlexGrid.GroupHeaderConverter.html#C1_WPF_FlexGrid_C1FlexGrid_GroupHeaderConverter">GroupHeaderConverter</a> property.</p>
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  <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_WPF_FlexGrid_GroupHeaderConverter__ctor" data-uid="C1.WPF.FlexGrid.GroupHeaderConverter.#ctor">
          <a class="xref" href="C1.WPF.FlexGrid.GroupHeaderConverter.-ctor.html#C1_WPF_FlexGrid_GroupHeaderConverter__ctor">GroupHeaderConverter()</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_WPF_FlexGrid_GroupHeaderConverter_NullEmptyString" data-uid="C1.WPF.FlexGrid.GroupHeaderConverter.NullEmptyString">
          <a class="xref" href="C1.WPF.FlexGrid.GroupHeaderConverter.NullEmptyString.html#C1_WPF_FlexGrid_GroupHeaderConverter_NullEmptyString">NullEmptyString</a>
        </td>
        <td class="markdown level1 summary"><p>Gets or sets a value to be displayed in group headers to represent empty strings or null values.</p>
<p>
By default, this property is set to empty string.
</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_WPF_FlexGrid_GroupHeaderConverter_Convert_System_Object_System_Type_System_Object_System_Globalization_CultureInfo_" data-uid="C1.WPF.FlexGrid.GroupHeaderConverter.Convert(System.Object,System.Type,System.Object,System.Globalization.CultureInfo)">
          <a class="xref" href="C1.WPF.FlexGrid.GroupHeaderConverter.Convert.html#C1_WPF_FlexGrid_GroupHeaderConverter_Convert_System_Object_System_Type_System_Object_System_Globalization_CultureInfo_">Convert(object, Type, object, CultureInfo)</a>
        </td>
        <td class="markdown level1 summary"><p>Converts a <a class="xref" href="C1.WPF.FlexGrid.GroupRow.html">GroupRow</a> objects into a string containing summary information for the group.</p>
</td>
      </tr>
      <tr>
        <td id="C1_WPF_FlexGrid_GroupHeaderConverter_ConvertBack_System_Object_System_Type_System_Object_System_Globalization_CultureInfo_" data-uid="C1.WPF.FlexGrid.GroupHeaderConverter.ConvertBack(System.Object,System.Type,System.Object,System.Globalization.CultureInfo)">
          <a class="xref" href="C1.WPF.FlexGrid.GroupHeaderConverter.ConvertBack.html#C1_WPF_FlexGrid_GroupHeaderConverter_ConvertBack_System_Object_System_Type_System_Object_System_Globalization_CultureInfo_">ConvertBack(object, Type, object, CultureInfo)</a>
        </td>
        <td class="markdown level1 summary"><p>This method is not used.</p>
</td>
      </tr>
    </tbody>
  </table>

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