mono/mcs/class/System.Core/Documentation/en/System.Linq/IQueryable`1.xml

<?xml version="1.0" encoding="utf-8"?>
<Type Name="IQueryable&lt;T&gt;" FullName="System.Linq.IQueryable&lt;T&gt;">
  <TypeSignature Language="C#" Value="public interface IQueryable&lt;out T&gt; : System.Collections.Generic.IEnumerable&lt;out T&gt;, System.Linq.IQueryable" />
  <TypeSignature Language="ILAsm" Value=".class public interface auto ansi abstract IQueryable`1&lt;+ T&gt; implements class System.Collections.Generic.IEnumerable`1&lt;!T&gt;, class System.Collections.IEnumerable, class System.Linq.IQueryable" />
  <AssemblyInfo>
    <AssemblyName>System.Core</AssemblyName>
    <AssemblyVersion>3.5.0.0</AssemblyVersion>
    <AssemblyVersion>4.0.0.0</AssemblyVersion>
  </AssemblyInfo>
  <TypeParameters>
    <TypeParameter Name="T">
      <Constraints>
        <ParameterAttribute>Covariant</ParameterAttribute>
      </Constraints>
    </TypeParameter>
  </TypeParameters>
  <Interfaces>
    <Interface>
      <InterfaceName>System.Collections.Generic.IEnumerable&lt;T&gt;</InterfaceName>
    </Interface>
    <Interface>
      <InterfaceName>System.Linq.IQueryable</InterfaceName>
    </Interface>
  </Interfaces>
  <Docs>
    <typeparam name="T">To be added.</typeparam>
    <remarks>
      <attribution license="cc4" from="Microsoft" modified="false" />
      <para>The <see cref="T:System.Linq.IQueryable`1" /> interface is intended for implementation by query providers.</para>
      <para>This interface inherits the <see cref="T:System.Collections.Generic.IEnumerable`1" /> interface so that if it represents a query, the results of that query can be enumerated. Enumeration forces the expression tree associated with an <see cref="T:System.Linq.IQueryable`1" /> object to be executed. Queries that do not return enumerable results are executed when the <see cref="M:System.Linq.IQueryProvider.Execute``1(System.Linq.Expressions.Expression)" /> method is called.</para>
      <para>The definition of "executing an expression tree" is specific to a query provider. For example, it may involve translating the expression tree to a query language appropriate for an underlying data source.</para>
      <para>The <see cref="T:System.Linq.IQueryable`1" /> interface enables queries to be polymorphic. That is, because a query against an <unmanagedCodeEntityReference>IQueryable</unmanagedCodeEntityReference> data source is represented as an expression tree, it can be executed against different types of data sources.</para>
      <para>The static (Shared in Visual Basic) methods defined in the class <see cref="T:System.Linq.Queryable" /> (except for <see cref="Overload:System.Linq.Queryable.AsQueryable" />, <see cref="Overload:System.Linq.Queryable.ThenBy" />, and <see cref="Overload:System.Linq.Queryable.ThenByDescending" />) extend objects of types that implement the <see cref="T:System.Linq.IQueryable`1" /> interface.</para>
      <para>For more information about how to create your own LINQ provider, see <see cref="http://go.microsoft.com/fwlink/?LinkID=112370">LINQ: Building an IQueryable Provider</see> on MSDN Blogs.</para>
    </remarks>
    <summary>
      <attribution license="cc4" from="Microsoft" modified="false" />
      <para>Provides functionality to evaluate queries against a specific data source wherein the type of the data is known.</para>
    </summary>
  </Docs>
  <Members />
</Type>