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<?xml version="1.0" encoding="utf-8"?>
<Type Name="IDesignerDataSchema" FullName="System.ComponentModel.Design.Data.IDesignerDataSchema">
<TypeSignature Language="C#" Value="public interface IDesignerDataSchema" />
<AssemblyInfo>
<AssemblyName>System.Design</AssemblyName>
<AssemblyVersion>2.0.0.0</AssemblyVersion>
</AssemblyInfo>
<Interfaces />
<Docs>
<remarks>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>Classes that implement the <see cref="T:System.ComponentModel.Design.Data.IDesignerDataSchema" /> interface retrieve schema information from a data store and return it to the user interface, typically to populate UI elements that enable the user to specify the data-store object that they want to work with.</para>
<para>The <see cref="T:System.ComponentModel.Design.Data.IDesignerDataSchema" /> interface provides two methods: the <see cref="M:System.ComponentModel.Design.Data.IDesignerDataSchema.GetSchemaItems(System.ComponentModel.Design.Data.DesignerDataSchemaClass)" /> method, which returns the requested schema objects, and the <see cref="M:System.ComponentModel.Design.Data.IDesignerDataSchema.SupportsSchemaClass(System.ComponentModel.Design.Data.DesignerDataSchemaClass)" /> method, which indicates whether a specified data-schema object is supported by the data store. </para>
</remarks>
<summary>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>Defines methods for retrieving data-store schema information.</para>
</summary>
</Docs>
<Members>
<Member MemberName="GetSchemaItems">
<MemberSignature Language="C#" Value="public System.Collections.ICollection GetSchemaItems (System.ComponentModel.Design.Data.DesignerDataSchemaClass schemaClass);" />
<MemberType>Method</MemberType>
<AssemblyInfo>
<AssemblyVersion>2.0.0.0</AssemblyVersion>
</AssemblyInfo>
<ReturnValue>
<ReturnType>System.Collections.ICollection</ReturnType>
</ReturnValue>
<Parameters>
<Parameter Name="schemaClass" Type="System.ComponentModel.Design.Data.DesignerDataSchemaClass" />
</Parameters>
<Docs>
<remarks>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>The <see cref="M:System.ComponentModel.Design.Data.IDesignerDataSchema.GetSchemaItems(System.ComponentModel.Design.Data.DesignerDataSchemaClass)" /> method returns a collection of all the specified schema objects in the data store. </para>
<para>See the <see cref="T:System.ComponentModel.Design.Data.DesignerDataSchemaClass" /> class for the list of schema objects supported by the .NET Framework. Additional schema objects can be added to the <see cref="T:System.ComponentModel.Design.Data.DesignerDataSchemaClass" /> class by creating a derived type.</para>
<para>If the data store does not support the requested schema object, the <see cref="M:System.ComponentModel.Design.Data.IDesignerDataSchema.GetSchemaItems(System.ComponentModel.Design.Data.DesignerDataSchemaClass)" /> method should return null. You can use the <see cref="M:System.ComponentModel.Design.Data.IDesignerDataSchema.SupportsSchemaClass(System.ComponentModel.Design.Data.DesignerDataSchemaClass)" /> method to determine whether a data store supports the requested schema object before calling the <see cref="M:System.ComponentModel.Design.Data.IDesignerDataSchema.GetSchemaItems(System.ComponentModel.Design.Data.DesignerDataSchemaClass)" /> method, to avoid returning null to your application.</para>
<para>If the data store supports the requested object, but does not contain any instances, the <see cref="M:System.ComponentModel.Design.Data.IDesignerDataSchema.GetSchemaItems(System.ComponentModel.Design.Data.DesignerDataSchemaClass)" /> method should return an empty collection.</para>
</remarks>
<summary>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>Gets a collection of specified schema items.</para>
</summary>
<returns>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>A collection of schema objects of the specified type.</para>
</returns>
<param name="schemaClass">
<attribution license="cc4" from="Microsoft" modified="false" />The schema objects to return.</param>
</Docs>
</Member>
<Member MemberName="SupportsSchemaClass">
<MemberSignature Language="C#" Value="public bool SupportsSchemaClass (System.ComponentModel.Design.Data.DesignerDataSchemaClass schemaClass);" />
<MemberType>Method</MemberType>
<AssemblyInfo>
<AssemblyVersion>2.0.0.0</AssemblyVersion>
</AssemblyInfo>
<ReturnValue>
<ReturnType>System.Boolean</ReturnType>
</ReturnValue>
<Parameters>
<Parameter Name="schemaClass" Type="System.ComponentModel.Design.Data.DesignerDataSchemaClass" />
</Parameters>
<Docs>
<remarks>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>The <see cref="M:System.ComponentModel.Design.Data.IDesignerDataSchema.SupportsSchemaClass(System.ComponentModel.Design.Data.DesignerDataSchemaClass)" /> method indicates whether the data store supports a specified data-schema object. If the data store does not support the specified object, the <see cref="M:System.ComponentModel.Design.Data.IDesignerDataSchema.SupportsSchemaClass(System.ComponentModel.Design.Data.DesignerDataSchemaClass)" /> method should return false.</para>
<para>You can add tests for additional data-schema objects by deriving from the <see cref="T:System.ComponentModel.Design.Data.DesignerDataSchemaClass" /> class.</para>
</remarks>
<summary>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>Returns a value indicating whether the data store contains the specified data-schema object.</para>
</summary>
<returns>
<attribution license="cc4" from="Microsoft" modified="false" />
<para>true if the data store supports the specified data-schema object; otherwise, false.</para>
</returns>
<param name="schemaClass">
<attribution license="cc4" from="Microsoft" modified="false" />The schema objects to return.</param>
</Docs>
</Member>
</Members>
</Type>
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