# GrapeCity.Enterprise.Data.Expressions.NothingExpressionInfo

## Content

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



  <h1 id="GrapeCity_Enterprise_Data_Expressions_NothingExpressionInfo" data-uid="GrapeCity.Enterprise.Data.Expressions.NothingExpressionInfo" class="text-break">NothingExpressionInfo Class
</h1>
  <div class="markdown level0 summary"><p>Represents the value &quot;Nothing&quot; in the <a class="xref" href="GrapeCity.Enterprise.Data.Expressions.ExpressionInfo.html">ExpressionInfo</a>.</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"><a class="xref" href="GrapeCity.Enterprise.Data.Expressions.ExpressionInfo.html">ExpressionInfo</a></div>
    <div class="level2"><span class="xref">NothingExpressionInfo</span></div>
  </div>
  <div class="implements">
    <h5>Implements</h5>
    <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.icomparable">IComparable</a></div>
    <div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.icloneable">ICloneable</a></div>
  </div>
  <h6><strong>Namespace</strong>: <a class="xref" href="GrapeCity.Enterprise.Data.Expressions.html">GrapeCity.Enterprise.Data.Expressions</a></h6>
  <h6><strong>Assembly</strong>: MESCIUS.ActiveReports.Core.Data.ExpressionInfo.dll</h6>
  <h5 id="GrapeCity_Enterprise_Data_Expressions_NothingExpressionInfo_syntax">Syntax</h5>
  <div class="codewrapper">
    <pre><code class="lang-csharp hljs">public sealed class NothingExpressionInfo : ExpressionInfo, IComparable, ICloneable</code></pre>
  </div>
  <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_Enterprise_Data_Expressions_NothingExpressionInfo_Create" data-uid="GrapeCity.Enterprise.Data.Expressions.NothingExpressionInfo.Create">
          <a class="xref" href="GrapeCity.Enterprise.Data.Expressions.NothingExpressionInfo.Create.html#GrapeCity_Enterprise_Data_Expressions_NothingExpressionInfo_Create">Create()</a>
        </td>
        <td class="markdown level1 summary"><p>Returns an instance of <span class="xref">NothingExpressionInfo</span>.</p>
</td>
      </tr>
      <tr>
        <td id="GrapeCity_Enterprise_Data_Expressions_NothingExpressionInfo_Equals_GrapeCity_Enterprise_Data_Expressions_ExpressionInfo_" data-uid="GrapeCity.Enterprise.Data.Expressions.NothingExpressionInfo.Equals(GrapeCity.Enterprise.Data.Expressions.ExpressionInfo)">
          <a class="xref" href="GrapeCity.Enterprise.Data.Expressions.NothingExpressionInfo.Equals.html#GrapeCity_Enterprise_Data_Expressions_NothingExpressionInfo_Equals_GrapeCity_Enterprise_Data_Expressions_ExpressionInfo_">Equals(ExpressionInfo)</a>
        </td>
        <td class="markdown level1 summary"><p>Determines whether the specified ExpressionInfo object represents the same expression as the given one.</p>
</td>
      </tr>
      <tr>
        <td id="GrapeCity_Enterprise_Data_Expressions_NothingExpressionInfo_GenerateExpressionString" data-uid="GrapeCity.Enterprise.Data.Expressions.NothingExpressionInfo.GenerateExpressionString">
          <a class="xref" href="GrapeCity.Enterprise.Data.Expressions.NothingExpressionInfo.GenerateExpressionString.html#GrapeCity_Enterprise_Data_Expressions_NothingExpressionInfo_GenerateExpressionString">GenerateExpressionString()</a>
        </td>
        <td class="markdown level1 summary"><p>Generates expression string</p>
</td>
      </tr>
      <tr>
        <td id="GrapeCity_Enterprise_Data_Expressions_NothingExpressionInfo_GetHashCode" data-uid="GrapeCity.Enterprise.Data.Expressions.NothingExpressionInfo.GetHashCode">
          <a class="xref" href="GrapeCity.Enterprise.Data.Expressions.NothingExpressionInfo.GetHashCode.html#GrapeCity_Enterprise_Data_Expressions_NothingExpressionInfo_GetHashCode">GetHashCode()</a>
        </td>
        <td class="markdown level1 summary"><p>Generates a HashCode for this expression.</p>
</td>
      </tr>
    </tbody>
  </table>
  <h3 id="extensionmethods">Extension Methods</h3>
  <div>
      <a class="xref" href="GrapeCity.Enterprise.Data.Expressions.Evaluation.ExpressionExtensions.EvalConst.html#GrapeCity_Enterprise_Data_Expressions_Evaluation_ExpressionExtensions_EvalConst_GrapeCity_Enterprise_Data_Expressions_ExpressionInfo_System_Boolean_">ExpressionExtensions.EvalConst(ExpressionInfo, bool)</a>
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  <div>
      <a class="xref" href="GrapeCity.Enterprise.Data.Expressions.Evaluation.ExpressionExtensions.EvalConstString.html#GrapeCity_Enterprise_Data_Expressions_Evaluation_ExpressionExtensions_EvalConstString_GrapeCity_Enterprise_Data_Expressions_ExpressionInfo_">ExpressionExtensions.EvalConstString(ExpressionInfo)</a>
  </div>
  <div>
      <a class="xref" href="GrapeCity.Enterprise.Data.Expressions.Evaluation.ExpressionExtensions.Evaluate.html#GrapeCity_Enterprise_Data_Expressions_Evaluation_ExpressionExtensions_Evaluate_GrapeCity_Enterprise_Data_Expressions_ExpressionInfo_GrapeCity_Enterprise_Data_Expressions_Evaluation_IDynamicObject_">ExpressionExtensions.Evaluate(ExpressionInfo, IDynamicObject)</a>
  </div>
  <div>
      <a class="xref" href="GrapeCity.Enterprise.Data.Expressions.ExpressionExtensions.FindReference.html#GrapeCity_Enterprise_Data_Expressions_ExpressionExtensions_FindReference_GrapeCity_Enterprise_Data_Expressions_ExpressionInfo_System_String_">ExpressionExtensions.FindReference(ExpressionInfo, string)</a>
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  <div>
      <a class="xref" href="GrapeCity.Enterprise.Data.Expressions.ExpressionExtensions.HasRefsToId.html#GrapeCity_Enterprise_Data_Expressions_ExpressionExtensions_HasRefsToId_GrapeCity_Enterprise_Data_Expressions_ExpressionInfo_System_String_">ExpressionExtensions.HasRefsToId(ExpressionInfo, string)</a>
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  <div>
      <a class="xref" href="GrapeCity.Enterprise.Data.Expressions.ExpressionExtensions.IsFunc.html#GrapeCity_Enterprise_Data_Expressions_ExpressionExtensions_IsFunc_GrapeCity_Enterprise_Data_Expressions_ExpressionInfo_System_String___">ExpressionExtensions.IsFunc(ExpressionInfo, params string[])</a>
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  <div>
      <a class="xref" href="GrapeCity.Enterprise.Data.Expressions.ExpressionExtensions.IsId.html#GrapeCity_Enterprise_Data_Expressions_ExpressionExtensions_IsId_GrapeCity_Enterprise_Data_Expressions_ExpressionInfo_System_String_">ExpressionExtensions.IsId(ExpressionInfo, string)</a>
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  <div>
      <a class="xref" href="GrapeCity.Enterprise.Data.Expressions.ExpressionExtensions.IsNullOrEmpty.html#GrapeCity_Enterprise_Data_Expressions_ExpressionExtensions_IsNullOrEmpty_GrapeCity_Enterprise_Data_Expressions_ExpressionInfo_">ExpressionExtensions.IsNullOrEmpty(ExpressionInfo)</a>
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  <div>
      <a class="xref" href="GrapeCity.Enterprise.Data.Expressions.ExpressionExtensions.IsValid.html#GrapeCity_Enterprise_Data_Expressions_ExpressionExtensions_IsValid_GrapeCity_Enterprise_Data_Expressions_ExpressionInfo_">ExpressionExtensions.IsValid(ExpressionInfo)</a>
  </div>
  <div>
      <a class="xref" href="GrapeCity.Enterprise.Data.Expressions.ExpressionExtensions.Not.html#GrapeCity_Enterprise_Data_Expressions_ExpressionExtensions_Not_GrapeCity_Enterprise_Data_Expressions_ExpressionInfo_">ExpressionExtensions.Not(ExpressionInfo)</a>
  </div>
  <div>
      <a class="xref" href="GrapeCity.Enterprise.Data.Expressions.ExpressionExtensions.Replace.html#GrapeCity_Enterprise_Data_Expressions_ExpressionExtensions_Replace_GrapeCity_Enterprise_Data_Expressions_ExpressionInfo_System_Func_GrapeCity_Enterprise_Data_Expressions_ExpressionInfo_GrapeCity_Enterprise_Data_Expressions_ExpressionInfo__">ExpressionExtensions.Replace(ExpressionInfo, Func&lt;ExpressionInfo, ExpressionInfo&gt;)</a>
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  <div>
      <a class="xref" href="GrapeCity.Enterprise.Data.Expressions.ExpressionExtensions.ReplaceIdentifier.html#GrapeCity_Enterprise_Data_Expressions_ExpressionExtensions_ReplaceIdentifier_GrapeCity_Enterprise_Data_Expressions_ExpressionInfo_System_Func_System_String_System_String__">ExpressionExtensions.ReplaceIdentifier(ExpressionInfo, Func&lt;string, string&gt;)</a>
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  <div>
      <a class="xref" href="GrapeCity.Enterprise.Data.Expressions.Tools.EnumerableExtensions.Flatten.html#GrapeCity_Enterprise_Data_Expressions_Tools_EnumerableExtensions_Flatten__1___0_System_Func___0___0__">EnumerableExtensions.Flatten&lt;T&gt;(T, Func&lt;T, T&gt;)</a>
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  <div>
      <a class="xref" href="GrapeCity.Enterprise.Data.Expressions.Tools.EnumerableExtensions.Flatten.html#GrapeCity_Enterprise_Data_Expressions_Tools_EnumerableExtensions_Flatten__1___0_System_Func___0_System_Collections_Generic_IEnumerable___0___">EnumerableExtensions.Flatten&lt;T&gt;(T, Func&lt;T, IEnumerable&lt;T&gt;&gt;)</a>
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  <div>
      <a class="xref" href="GrapeCity.Enterprise.Data.Expressions.Tools.EnumerableExtensions.Repeat.html#GrapeCity_Enterprise_Data_Expressions_Tools_EnumerableExtensions_Repeat__1___0_System_Int32_">EnumerableExtensions.Repeat&lt;T&gt;(T, int)</a>
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  <div>
      <a class="xref" href="GrapeCity.Enterprise.Data.Expressions.Tools.EnumerableExtensions.WithIndex.html#GrapeCity_Enterprise_Data_Expressions_Tools_EnumerableExtensions_WithIndex__1___0_System_Int32_">EnumerableExtensions.WithIndex&lt;T&gt;(T, int)</a>
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