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<article class="content wrap" id="_content" data-uid="FreeSql.DataAnnotations.IndexAttribute">
<h1 id="FreeSql_DataAnnotations_IndexAttribute" data-uid="FreeSql.DataAnnotations.IndexAttribute" class="text-break">Class IndexAttribute
</h1>
<div class="markdown level0 summary"><p>索引设置,如:[Index(&quot;{tablename}_idx_01&quot;, &quot;name&quot;)]</p>
</div>
<div class="markdown level0 conceptual"></div>
<div class="inheritance">
<h5>Inheritance</h5>
<div class="level0"><span class="xref">System.Object</span></div>
<div class="level1"><span class="xref">System.Attribute</span></div>
<div class="level2"><span class="xref">IndexAttribute</span></div>
</div>
<div class="inheritedMembers">
<h5>Inherited Members</h5>
<div>
<span class="xref">System.Attribute.Equals(System.Object)</span>
</div>
<div>
<span class="xref">System.Attribute.GetCustomAttribute(System.Reflection.Assembly, System.Type)</span>
</div>
<div>
<span class="xref">System.Attribute.GetCustomAttribute(System.Reflection.Assembly, System.Type, System.Boolean)</span>
</div>
<div>
<span class="xref">System.Attribute.GetCustomAttribute(System.Reflection.MemberInfo, System.Type)</span>
</div>
<div>
<span class="xref">System.Attribute.GetCustomAttribute(System.Reflection.MemberInfo, System.Type, System.Boolean)</span>
</div>
<div>
<span class="xref">System.Attribute.GetCustomAttribute(System.Reflection.Module, System.Type)</span>
</div>
<div>
<span class="xref">System.Attribute.GetCustomAttribute(System.Reflection.Module, System.Type, System.Boolean)</span>
</div>
<div>
<span class="xref">System.Attribute.GetCustomAttribute(System.Reflection.ParameterInfo, System.Type)</span>
</div>
<div>
<span class="xref">System.Attribute.GetCustomAttribute(System.Reflection.ParameterInfo, System.Type, System.Boolean)</span>
</div>
<div>
<span class="xref">System.Attribute.GetCustomAttributes(System.Reflection.Assembly)</span>
</div>
<div>
<span class="xref">System.Attribute.GetCustomAttributes(System.Reflection.Assembly, System.Boolean)</span>
</div>
<div>
<span class="xref">System.Attribute.GetCustomAttributes(System.Reflection.Assembly, System.Type)</span>
</div>
<div>
<span class="xref">System.Attribute.GetCustomAttributes(System.Reflection.Assembly, System.Type, System.Boolean)</span>
</div>
<div>
<span class="xref">System.Attribute.GetCustomAttributes(System.Reflection.MemberInfo)</span>
</div>
<div>
<span class="xref">System.Attribute.GetCustomAttributes(System.Reflection.MemberInfo, System.Boolean)</span>
</div>
<div>
<span class="xref">System.Attribute.GetCustomAttributes(System.Reflection.MemberInfo, System.Type)</span>
</div>
<div>
<span class="xref">System.Attribute.GetCustomAttributes(System.Reflection.MemberInfo, System.Type, System.Boolean)</span>
</div>
<div>
<span class="xref">System.Attribute.GetCustomAttributes(System.Reflection.Module)</span>
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<span class="xref">System.Attribute.GetCustomAttributes(System.Reflection.Module, System.Boolean)</span>
</div>
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<span class="xref">System.Attribute.GetCustomAttributes(System.Reflection.Module, System.Type)</span>
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</div>
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</div>
<div>
<span class="xref">System.Attribute.GetCustomAttributes(System.Reflection.ParameterInfo, System.Type, System.Boolean)</span>
</div>
<div>
<span class="xref">System.Attribute.GetHashCode()</span>
</div>
<div>
<span class="xref">System.Attribute.IsDefaultAttribute()</span>
</div>
<div>
<span class="xref">System.Attribute.IsDefined(System.Reflection.Assembly, System.Type)</span>
</div>
<div>
<span class="xref">System.Attribute.IsDefined(System.Reflection.Assembly, System.Type, System.Boolean)</span>
</div>
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<span class="xref">System.Attribute.IsDefined(System.Reflection.MemberInfo, System.Type)</span>
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<span class="xref">System.Attribute.IsDefined(System.Reflection.MemberInfo, System.Type, System.Boolean)</span>
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<span class="xref">System.Attribute.IsDefined(System.Reflection.Module, System.Type)</span>
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<span class="xref">System.Attribute.IsDefined(System.Reflection.Module, System.Type, System.Boolean)</span>
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<span class="xref">System.Attribute.IsDefined(System.Reflection.ParameterInfo, System.Type)</span>
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<span class="xref">System.Attribute.TypeId</span>
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<h6><strong>Namespace</strong>: <a class="xref" href="FreeSql.DataAnnotations.html">FreeSql.DataAnnotations</a></h6>
<h6><strong>Assembly</strong>: FreeSql.dll</h6>
<h5 id="FreeSql_DataAnnotations_IndexAttribute_syntax">Syntax</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">[AttributeUsage(AttributeTargets.Class, AllowMultiple = true)]
public class IndexAttribute : Attribute</code></pre>
</div>
<h3 id="constructors">Constructors
</h3>
<span class="small pull-right mobile-hide">
<span class="divider">|</span>
<a href="https://github.com/dotnetcore/freesql/new/master/apiSpec/new?filename=FreeSql_DataAnnotations_IndexAttribute__ctor_System_String_System_String_.md&amp;value=---%0Auid%3A%20FreeSql.DataAnnotations.IndexAttribute.%23ctor(System.String%2CSystem.String)%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a>
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<span class="small pull-right mobile-hide">
<a href="https://github.com/dotnetcore/FreeSql/blob/master/FreeSql/DataAnnotations/IndexAttribute.cs/#L18">View Source</a>
</span>
<a id="FreeSql_DataAnnotations_IndexAttribute__ctor_" data-uid="FreeSql.DataAnnotations.IndexAttribute.#ctor*"></a>
<h4 id="FreeSql_DataAnnotations_IndexAttribute__ctor_System_String_System_String_" data-uid="FreeSql.DataAnnotations.IndexAttribute.#ctor(System.String,System.String)">IndexAttribute(String, String)</h4>
<div class="markdown level1 summary"><p>索引设置,如:[Index(&quot;{tablename}_idx_01&quot;, &quot;name&quot;)]</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public IndexAttribute(string name, string fields)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.String</span></td>
<td><span class="parametername">name</span></td>
<td><p>索引名<p>v1.7.0 增加占位符 {TableName} 表名区分索引名 (解决 AsTable 分表 CodeFirst 导致索引名重复的问题)</p>
</td>
</tr>
<tr>
<td><span class="xref">System.String</span></td>
<td><span class="parametername">fields</span></td>
<td><p>索引字段为属性名以逗号分隔Create_time ASC, Title ASC</p>
</td>
</tr>
</tbody>
</table>
<span class="small pull-right mobile-hide">
<span class="divider">|</span>
<a href="https://github.com/dotnetcore/freesql/new/master/apiSpec/new?filename=FreeSql_DataAnnotations_IndexAttribute__ctor_System_String_System_String_System_Boolean_.md&amp;value=---%0Auid%3A%20FreeSql.DataAnnotations.IndexAttribute.%23ctor(System.String%2CSystem.String%2CSystem.Boolean)%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a>
</span>
<span class="small pull-right mobile-hide">
<a href="https://github.com/dotnetcore/FreeSql/blob/master/FreeSql/DataAnnotations/IndexAttribute.cs/#L29">View Source</a>
</span>
<a id="FreeSql_DataAnnotations_IndexAttribute__ctor_" data-uid="FreeSql.DataAnnotations.IndexAttribute.#ctor*"></a>
<h4 id="FreeSql_DataAnnotations_IndexAttribute__ctor_System_String_System_String_System_Boolean_" data-uid="FreeSql.DataAnnotations.IndexAttribute.#ctor(System.String,System.String,System.Boolean)">IndexAttribute(String, String, Boolean)</h4>
<div class="markdown level1 summary"><p>索引设置,如:[Index(&quot;{tablename}_idx_01&quot;, &quot;name&quot;, true)]</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public IndexAttribute(string name, string fields, bool isUnique)</code></pre>
</div>
<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Name</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.String</span></td>
<td><span class="parametername">name</span></td>
<td><p>索引名<p>v1.7.0 增加占位符 {TableName} 表名区分索引名 (解决 AsTable 分表 CodeFirst 导致索引名重复的问题)</p>
</td>
</tr>
<tr>
<td><span class="xref">System.String</span></td>
<td><span class="parametername">fields</span></td>
<td><p>索引字段为属性名以逗号分隔Create_time ASC, Title ASC</p>
</td>
</tr>
<tr>
<td><span class="xref">System.Boolean</span></td>
<td><span class="parametername">isUnique</span></td>
<td><p>是否唯一</p>
</td>
</tr>
</tbody>
</table>
<h3 id="properties">Properties
</h3>
<span class="small pull-right mobile-hide">
<span class="divider">|</span>
<a href="https://github.com/dotnetcore/freesql/new/master/apiSpec/new?filename=FreeSql_DataAnnotations_IndexAttribute_Fields.md&amp;value=---%0Auid%3A%20FreeSql.DataAnnotations.IndexAttribute.Fields%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a>
</span>
<span class="small pull-right mobile-hide">
<a href="https://github.com/dotnetcore/FreeSql/blob/master/FreeSql/DataAnnotations/IndexAttribute.cs/#L43">View Source</a>
</span>
<a id="FreeSql_DataAnnotations_IndexAttribute_Fields_" data-uid="FreeSql.DataAnnotations.IndexAttribute.Fields*"></a>
<h4 id="FreeSql_DataAnnotations_IndexAttribute_Fields" data-uid="FreeSql.DataAnnotations.IndexAttribute.Fields">Fields</h4>
<div class="markdown level1 summary"><p>索引字段为属性名以逗号分隔Create_time ASC, Title ASC</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public string Fields { get; set; }</code></pre>
</div>
<h5 class="propertyValue">Property Value</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.String</span></td>
<td></td>
</tr>
</tbody>
</table>
<span class="small pull-right mobile-hide">
<span class="divider">|</span>
<a href="https://github.com/dotnetcore/freesql/new/master/apiSpec/new?filename=FreeSql_DataAnnotations_IndexAttribute_IndexMethod.md&amp;value=---%0Auid%3A%20FreeSql.DataAnnotations.IndexAttribute.IndexMethod%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a>
</span>
<span class="small pull-right mobile-hide">
<a href="https://github.com/dotnetcore/FreeSql/blob/master/FreeSql/DataAnnotations/IndexAttribute.cs/#L55">View Source</a>
</span>
<a id="FreeSql_DataAnnotations_IndexAttribute_IndexMethod_" data-uid="FreeSql.DataAnnotations.IndexAttribute.IndexMethod*"></a>
<h4 id="FreeSql_DataAnnotations_IndexAttribute_IndexMethod" data-uid="FreeSql.DataAnnotations.IndexAttribute.IndexMethod">IndexMethod</h4>
<div class="markdown level1 summary"><p>索引类型<p>
暂时只有 FreeSql.Provider.PostgreSQL 有效</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public IndexMethod IndexMethod { get; set; }</code></pre>
</div>
<h5 class="propertyValue">Property Value</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><a class="xref" href="FreeSql.DataAnnotations.IndexMethod.html">IndexMethod</a></td>
<td></td>
</tr>
</tbody>
</table>
<span class="small pull-right mobile-hide">
<span class="divider">|</span>
<a href="https://github.com/dotnetcore/freesql/new/master/apiSpec/new?filename=FreeSql_DataAnnotations_IndexAttribute_IsUnique.md&amp;value=---%0Auid%3A%20FreeSql.DataAnnotations.IndexAttribute.IsUnique%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a>
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<span class="small pull-right mobile-hide">
<a href="https://github.com/dotnetcore/FreeSql/blob/master/FreeSql/DataAnnotations/IndexAttribute.cs/#L49">View Source</a>
</span>
<a id="FreeSql_DataAnnotations_IndexAttribute_IsUnique_" data-uid="FreeSql.DataAnnotations.IndexAttribute.IsUnique*"></a>
<h4 id="FreeSql_DataAnnotations_IndexAttribute_IsUnique" data-uid="FreeSql.DataAnnotations.IndexAttribute.IsUnique">IsUnique</h4>
<div class="markdown level1 summary"><p>是否唯一</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public bool IsUnique { get; set; }</code></pre>
</div>
<h5 class="propertyValue">Property Value</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.Boolean</span></td>
<td></td>
</tr>
</tbody>
</table>
<span class="small pull-right mobile-hide">
<span class="divider">|</span>
<a href="https://github.com/dotnetcore/freesql/new/master/apiSpec/new?filename=FreeSql_DataAnnotations_IndexAttribute_Name.md&amp;value=---%0Auid%3A%20FreeSql.DataAnnotations.IndexAttribute.Name%0Asummary%3A%20'*You%20can%20override%20summary%20for%20the%20API%20here%20using%20*MARKDOWN*%20syntax'%0A---%0A%0A*Please%20type%20below%20more%20information%20about%20this%20API%3A*%0A%0A">Improve this Doc</a>
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<span class="small pull-right mobile-hide">
<a href="https://github.com/dotnetcore/FreeSql/blob/master/FreeSql/DataAnnotations/IndexAttribute.cs/#L39">View Source</a>
</span>
<a id="FreeSql_DataAnnotations_IndexAttribute_Name_" data-uid="FreeSql.DataAnnotations.IndexAttribute.Name*"></a>
<h4 id="FreeSql_DataAnnotations_IndexAttribute_Name" data-uid="FreeSql.DataAnnotations.IndexAttribute.Name">Name</h4>
<div class="markdown level1 summary"><p>索引名<p>
v1.7.0 增加占位符 {TableName} 表名区分索引名 (解决 AsTable 分表 CodeFirst 导致索引名重复的问题)</p>
</div>
<div class="markdown level1 conceptual"></div>
<h5 class="decalaration">Declaration</h5>
<div class="codewrapper">
<pre><code class="lang-csharp hljs">public string Name { get; set; }</code></pre>
</div>
<h5 class="propertyValue">Property Value</h5>
<table class="table table-bordered table-striped table-condensed">
<thead>
<tr>
<th>Type</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><span class="xref">System.String</span></td>
<td></td>
</tr>
</tbody>
</table>
</article>
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