# GrapeCity.ActiveReports.Web.Viewer.ReportViewerConfiguration.ReportParameterValuesNeeded

## Content

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<h1 id="GrapeCity_ActiveReports_Web_Viewer_ReportViewerConfiguration_ReportParameterValuesNeeded_" data-uid="GrapeCity.ActiveReports.Web.Viewer.ReportViewerConfiguration.ReportParameterValuesNeeded*">ReportParameterValuesNeeded Property
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<a id="GrapeCity_ActiveReports_Web_Viewer_ReportViewerConfiguration_ReportParameterValuesNeeded_" data-uid="GrapeCity.ActiveReports.Web.Viewer.ReportViewerConfiguration.ReportParameterValuesNeeded*"></a>
<h4 id="GrapeCity_ActiveReports_Web_Viewer_ReportViewerConfiguration_ReportParameterValuesNeeded" data-uid="GrapeCity.ActiveReports.Web.Viewer.ReportViewerConfiguration.ReportParameterValuesNeeded">ReportParameterValuesNeeded</h4>
<div class="markdown level1 summary"><p>Gets or sets a callback function that provides values for the specified report parameters.</p>
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<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">public Func&lt;ReportParametersArgs, ParameterValue[]&gt; ReportParameterValuesNeeded { get; set; }</code></pre>
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<h5 class="propertyValue">Property Value</h5>
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      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.func-2">Func</a>&lt;<a class="xref" href="GrapeCity.ActiveReports.Web.Viewer.ReportParametersArgs.html">ReportParametersArgs</a>, <a class="xref" href="GrapeCity.ActiveReports.Web.Viewer.ParameterValue.html">ParameterValue</a>[]&gt;</td>
      <td><p>A <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.func-2">Func&lt;T, TResult&gt;</a> delegate that returns an array of <a class="xref" href="GrapeCity.ActiveReports.Web.Viewer.ParameterValue.html">ParameterValue</a>
objects, containing parameter names and their corresponding values, based on the provided <a class="xref" href="GrapeCity.ActiveReports.Web.Viewer.ReportParametersArgs.html">ReportParametersArgs</a>.</p>
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