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<title>Class ListIndexBasedIEnumerator&lt;T&gt; | HiAPI-C# 2025 </title>
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<article data-uid="Hi.Common.Collections.ListIndexBasedIEnumerator`1">
<h1 id="Hi_Common_Collections_ListIndexBasedIEnumerator_1" data-uid="Hi.Common.Collections.ListIndexBasedIEnumerator`1" class="text-break">
Class ListIndexBasedIEnumerator&lt;T&gt;
</h1>
<div class="facts text-secondary">
<dl><dt>Namespace</dt><dd><a class="xref" href="Hi.html">Hi</a>.<a class="xref" href="Hi.Common.html">Common</a>.<a class="xref" href="Hi.Common.Collections.html">Collections</a></dd></dl>
<dl><dt>Assembly</dt><dd>HiGeom.dll</dd></dl>
</div>
<div class="markdown summary"><p>Provides an enumerator that iterates over a specified range of indices in a list.</p>
</div>
<div class="markdown conceptual"></div>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public class ListIndexBasedIEnumerator&lt;T&gt; : IEnumerator&lt;T&gt;, IEnumerator, IDisposable</code></pre>
</div>
<h4 class="section">Type Parameters</h4>
<dl class="parameters">
<dt><code>T</code></dt>
<dd><p>The type of elements in the list.</p>
</dd>
</dl>
<dl class="typelist inheritance">
<dt>Inheritance</dt>
<dd>
<div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object">object</a></div>
<div><span class="xref">ListIndexBasedIEnumerator&lt;T&gt;</span></div>
</dd>
</dl>
<dl class="typelist implements">
<dt>Implements</dt>
<dd>
<div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.collections.generic.ienumerator-1">IEnumerator</a>&lt;T&gt;</div>
<div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.collections.ienumerator">IEnumerator</a></div>
<div><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.idisposable">IDisposable</a></div>
</dd>
</dl>
<dl class="typelist inheritedMembers">
<dt>Inherited Members</dt>
<dd>
<div>
<a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object.equals#system-object-equals(system-object)">object.Equals(object)</a>
</div>
<div>
<a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object.equals#system-object-equals(system-object-system-object)">object.Equals(object, object)</a>
</div>
<div>
<a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object.gethashcode">object.GetHashCode()</a>
</div>
<div>
<a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object.gettype">object.GetType()</a>
</div>
<div>
<a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object.memberwiseclone">object.MemberwiseClone()</a>
</div>
<div>
<a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object.referenceequals">object.ReferenceEquals(object, object)</a>
</div>
<div>
<a class="xref" href="https://learn.microsoft.com/dotnet/api/system.object.tostring">object.ToString()</a>
</div>
</dd></dl>
<dl class="typelist extensionMethods">
<dt>Extension Methods</dt>
<dd>
<div>
<a class="xref" href="Hi.Common.DuplicateUtil.html#Hi_Common_DuplicateUtil_TryDuplicate__1___0_System_Object___">DuplicateUtil.TryDuplicate&lt;TSelf&gt;(TSelf, params object[])</a>
</div>
<div>
<a class="xref" href="Hi.Common.InvokeUtil.html#Hi_Common_InvokeUtil_SelfInvoke__1___0_System_Action___0__">InvokeUtil.SelfInvoke&lt;TSrc&gt;(TSrc, Action&lt;TSrc&gt;)</a>
</div>
<div>
<a class="xref" href="Hi.Common.InvokeUtil.html#Hi_Common_InvokeUtil_SelfInvoke__2___0_System_Func___0___1__">InvokeUtil.SelfInvoke&lt;TSrc, TDst&gt;(TSrc, Func&lt;TSrc, TDst&gt;)</a>
</div>
<div>
<a class="xref" href="Hi.Coloring.ColorUtil.html#Hi_Coloring_ColorUtil_GetGloomyColor_System_Object_System_Double_System_Double_">ColorUtil.GetGloomyColor(object, double, double)</a>
</div>
<div>
<a class="xref" href="Hi.Common.NameUtil.html#Hi_Common_NameUtil_GetSelectionName_System_Object_">NameUtil.GetSelectionName(object)</a>
</div>
<div>
<a class="xref" href="Hi.Common.StringUtil.html#Hi_Common_StringUtil_GetPropertyStringIfToStringNotOverloaded_System_Object_System_Boolean_System_Boolean_">StringUtil.GetPropertyStringIfToStringNotOverloaded(object, bool, bool)</a>
</div>
<div>
<a class="xref" href="Hi.Parallels.LockUtil.html#Hi_Parallels_LockUtil_Lock_System_Object_">LockUtil.Lock(object)</a>
</div>
</dd></dl>
<h2 class="section" id="constructors">Constructors
</h2>
<a id="Hi_Common_Collections_ListIndexBasedIEnumerator_1__ctor_" data-uid="Hi.Common.Collections.ListIndexBasedIEnumerator`1.#ctor*"></a>
<h3 id="Hi_Common_Collections_ListIndexBasedIEnumerator_1__ctor_System_Collections_Generic_IList__0__System_Int32_System_Int32_System_Int32_" data-uid="Hi.Common.Collections.ListIndexBasedIEnumerator`1.#ctor(System.Collections.Generic.IList{`0},System.Int32,System.Int32,System.Int32)">
ListIndexBasedIEnumerator(IList&lt;T&gt;, int, int, int)
</h3>
<div class="markdown level1 summary"><p>Initializes a new instance of the <a class="xref" href="Hi.Common.Collections.ListIndexBasedIEnumerator-1.html">ListIndexBasedIEnumerator&lt;T&gt;</a> class.</p>
</div>
<div class="markdown level1 conceptual"></div>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public ListIndexBasedIEnumerator(IList&lt;T&gt; source, int index, int begin, int end)</code></pre>
</div>
<h4 class="section">Parameters</h4>
<dl class="parameters">
<dt><code>source</code> <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.collections.generic.ilist-1">IList</a>&lt;T&gt;</dt>
<dd><p>The source list to enumerate.</p>
</dd>
<dt><code>index</code> <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.int32">int</a></dt>
<dd><p>The current index.</p>
</dd>
<dt><code>begin</code> <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.int32">int</a></dt>
<dd><p>The starting index (inclusive).</p>
</dd>
<dt><code>end</code> <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.int32">int</a></dt>
<dd><p>The ending index (exclusive).</p>
</dd>
</dl>
<h2 class="section" id="properties">Properties
</h2>
<a id="Hi_Common_Collections_ListIndexBasedIEnumerator_1_Begin_" data-uid="Hi.Common.Collections.ListIndexBasedIEnumerator`1.Begin*"></a>
<h3 id="Hi_Common_Collections_ListIndexBasedIEnumerator_1_Begin" data-uid="Hi.Common.Collections.ListIndexBasedIEnumerator`1.Begin">
Begin
</h3>
<div class="markdown level1 summary"><p>Gets or sets the beginning index of the enumeration range.</p>
</div>
<div class="markdown level1 conceptual"></div>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public int Begin { get; set; }</code></pre>
</div>
<h4 class="section">Property Value</h4>
<dl class="parameters">
<dt><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.int32">int</a></dt>
<dd></dd>
</dl>
<a id="Hi_Common_Collections_ListIndexBasedIEnumerator_1_Current_" data-uid="Hi.Common.Collections.ListIndexBasedIEnumerator`1.Current*"></a>
<h3 id="Hi_Common_Collections_ListIndexBasedIEnumerator_1_Current" data-uid="Hi.Common.Collections.ListIndexBasedIEnumerator`1.Current">
Current
</h3>
<div class="markdown level1 summary"><p>Gets the element in the collection at the current position of the enumerator.</p>
</div>
<div class="markdown level1 conceptual"></div>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public T Current { get; }</code></pre>
</div>
<h4 class="section">Property Value</h4>
<dl class="parameters">
<dt><span class="xref">T</span></dt>
<dd><p>The element in the collection at the current position of the enumerator.</p>
</dd>
</dl>
<a id="Hi_Common_Collections_ListIndexBasedIEnumerator_1_End_" data-uid="Hi.Common.Collections.ListIndexBasedIEnumerator`1.End*"></a>
<h3 id="Hi_Common_Collections_ListIndexBasedIEnumerator_1_End" data-uid="Hi.Common.Collections.ListIndexBasedIEnumerator`1.End">
End
</h3>
<div class="markdown level1 summary"><p>Gets or sets the ending index of the enumeration range.</p>
</div>
<div class="markdown level1 conceptual"></div>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public int End { get; set; }</code></pre>
</div>
<h4 class="section">Property Value</h4>
<dl class="parameters">
<dt><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.int32">int</a></dt>
<dd></dd>
</dl>
<a id="Hi_Common_Collections_ListIndexBasedIEnumerator_1_Index_" data-uid="Hi.Common.Collections.ListIndexBasedIEnumerator`1.Index*"></a>
<h3 id="Hi_Common_Collections_ListIndexBasedIEnumerator_1_Index" data-uid="Hi.Common.Collections.ListIndexBasedIEnumerator`1.Index">
Index
</h3>
<div class="markdown level1 summary"><p>Gets or sets the current index in the enumeration.</p>
</div>
<div class="markdown level1 conceptual"></div>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public int Index { get; set; }</code></pre>
</div>
<h4 class="section">Property Value</h4>
<dl class="parameters">
<dt><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.int32">int</a></dt>
<dd></dd>
</dl>
<a id="Hi_Common_Collections_ListIndexBasedIEnumerator_1_Source_" data-uid="Hi.Common.Collections.ListIndexBasedIEnumerator`1.Source*"></a>
<h3 id="Hi_Common_Collections_ListIndexBasedIEnumerator_1_Source" data-uid="Hi.Common.Collections.ListIndexBasedIEnumerator`1.Source">
Source
</h3>
<div class="markdown level1 summary"><p>Gets or sets the source list being enumerated.</p>
</div>
<div class="markdown level1 conceptual"></div>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public IList&lt;T&gt; Source { get; set; }</code></pre>
</div>
<h4 class="section">Property Value</h4>
<dl class="parameters">
<dt><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.collections.generic.ilist-1">IList</a>&lt;T&gt;</dt>
<dd></dd>
</dl>
<h2 class="section" id="methods">Methods
</h2>
<a id="Hi_Common_Collections_ListIndexBasedIEnumerator_1_Dispose_" data-uid="Hi.Common.Collections.ListIndexBasedIEnumerator`1.Dispose*"></a>
<h3 id="Hi_Common_Collections_ListIndexBasedIEnumerator_1_Dispose" data-uid="Hi.Common.Collections.ListIndexBasedIEnumerator`1.Dispose">
Dispose()
</h3>
<div class="markdown level1 summary"><p>Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.</p>
</div>
<div class="markdown level1 conceptual"></div>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public void Dispose()</code></pre>
</div>
<a id="Hi_Common_Collections_ListIndexBasedIEnumerator_1_MoveNext_" data-uid="Hi.Common.Collections.ListIndexBasedIEnumerator`1.MoveNext*"></a>
<h3 id="Hi_Common_Collections_ListIndexBasedIEnumerator_1_MoveNext" data-uid="Hi.Common.Collections.ListIndexBasedIEnumerator`1.MoveNext">
MoveNext()
</h3>
<div class="markdown level1 summary"><p>Advances the enumerator to the next element of the collection.</p>
</div>
<div class="markdown level1 conceptual"></div>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public bool MoveNext()</code></pre>
</div>
<h4 class="section">Returns</h4>
<dl class="parameters">
<dt><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.boolean">bool</a></dt>
<dd><p><a href="https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool">true</a> if the enumerator was successfully advanced to the next element; <a href="https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool">false</a> if the enumerator has passed the end of the collection.</p>
</dd>
</dl>
<h4 class="section">Exceptions</h4>
<dl class="parameters">
<dt><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.invalidoperationexception">InvalidOperationException</a></dt>
<dd><p>The collection was modified after the enumerator was created.</p>
</dd>
</dl>
<a id="Hi_Common_Collections_ListIndexBasedIEnumerator_1_Reset_" data-uid="Hi.Common.Collections.ListIndexBasedIEnumerator`1.Reset*"></a>
<h3 id="Hi_Common_Collections_ListIndexBasedIEnumerator_1_Reset" data-uid="Hi.Common.Collections.ListIndexBasedIEnumerator`1.Reset">
Reset()
</h3>
<div class="markdown level1 summary"><p>Sets the enumerator to its initial position, which is before the first element in the collection.</p>
</div>
<div class="markdown level1 conceptual"></div>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public void Reset()</code></pre>
</div>
<h4 class="section">Exceptions</h4>
<dl class="parameters">
<dt><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.invalidoperationexception">InvalidOperationException</a></dt>
<dd><p>The collection was modified after the enumerator was created.</p>
</dd>
<dt><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.notsupportedexception">NotSupportedException</a></dt>
<dd><p>The enumerator does not support being reset.</p>
</dd>
</dl>
</article>
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