UserDefinedTypeCollection 类

The UserDefinedTypeCollection class represents a collection of UserDefinedType objects that represent all the alias data types that are defined on a table.

继承层次结构

System.Object
  Microsoft.SqlServer.Management.Smo.AbstractCollectionBase
    Microsoft.SqlServer.Management.Smo.SmoCollectionBase
      Microsoft.SqlServer.Management.Smo.SortedListCollectionBase
        Microsoft.SqlServer.Management.Smo.SchemaCollectionBase
          Microsoft.SqlServer.Management.Smo.UserDefinedTypeCollection

命名空间：  Microsoft.SqlServer.Management.Smo
程序集：  Microsoft.SqlServer.Smo（在 Microsoft.SqlServer.Smo.dll 中）

语法

声明
Public NotInheritable Class UserDefinedTypeCollection _
    Inherits SchemaCollectionBase
用法
Dim instance As UserDefinedTypeCollection

public sealed class UserDefinedTypeCollection : SchemaCollectionBase

public ref class UserDefinedTypeCollection sealed : public SchemaCollectionBase

[<SealedAttribute>]
type UserDefinedTypeCollection =  
    class 
        inherit SchemaCollectionBase 
    end

public final class UserDefinedTypeCollection extends SchemaCollectionBase

UserDefinedTypeCollection 类型公开以下成员。

属性

	名称	说明
	Count	Gets the number of objects in the referenced collection. （从 SmoCollectionBase 继承。）
	IsSynchronized	Gets the Boolean property value that specifies whether access to the collection is synchronized and therefore thread-safe. （从 SmoCollectionBase 继承。）
	Item[Int32]	Gets a UserDefinedType object in the collection by index number.
	Item[String]	Gets a UserDefinedType object in the collection by name.
	Item[String, String]	Gets a UserDefinedType object in the collection by name and schema.
	Parent	Gets the Database object that is the parent of the UserDefinedType object.
	SyncRoot	Gets an object that can be used to synchronize access to the collection. （从 SmoCollectionBase 继承。）

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方法

	名称	说明
	Add	Adds a user-defined type to the collection.
	AddExisting	Adds an object to the collection. （从 AbstractCollectionBase 继承。）
	Contains(String)	Validates whether the parameter collection contains a member with a name equal to the specified string. （从 SchemaCollectionBase 继承。）
	Contains(String, String)	Validates whether the parameter collection contains a member with a name equal to the specified string and with the specified schema. （从 SchemaCollectionBase 继承。）
	CopyTo	Copies the collection objects to a one-dimensional array starting at the specified index value.
	Equals	（从 Object 继承。）
	GetEnumerator	Returns an IEnumerator interface that allows you to iterate through the objects in the collection. （从 SmoCollectionBase 继承。）
	GetHashCode	（从 Object 继承。）
	GetType	（从 Object 继承。）
	ItemById	Extracts a member from the UserDefinedTypeCollection collection by using a system-defined, unique identifier.
	Refresh()	Refreshes the referenced collection. （从 SmoCollectionBase 继承。）
	Refresh(Boolean)	Refreshes the referenced collection with the option to refresh child objects of the referenced collection. （从 SmoCollectionBase 继承。）
	ToString	（从 Object 继承。）

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字段

	名称	说明
	initialized	This value supports the SMO infrastructure and is not intended to be used directly from your code. （从 AbstractCollectionBase 继承。）

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显式接口实现

	名称	说明
	ICollection.CopyTo	Copies the elements from an instance to an array beginning at the index indicated. （从 SmoCollectionBase 继承。）

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注释

A UserDefinedTypeCollection object can be used to gain access to a set of alias data types. You can use the Item property to return a specific UserDefinedType object.

Thread Safety

此类型的任何公共静态（Microsoft Visual Basic 中的 Shared）成员在多线程操作中是安全的。但不保证所有实例成员都是线程安全的。

示例

使用集合

线程安全

此类型的任何公共 static（在 Visual Basic 中为 Shared） 成员都是线程安全的。不保证所有实例成员都是线程安全的。

请参阅

参考

Microsoft.SqlServer.Management.Smo 命名空间