UserDefinedDataTypeCollection 类
The UserDefinedDataTypeCollection class represents a collection of UserDefinedDataType objects that represent all the user-defined data types 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.UserDefinedDataTypeCollection
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 UserDefinedDataTypeCollection _
Inherits SchemaCollectionBase
用法
Dim instance As UserDefinedDataTypeCollection
public sealed class UserDefinedDataTypeCollection : SchemaCollectionBase
public ref class UserDefinedDataTypeCollection sealed : public SchemaCollectionBase
[<SealedAttribute>]
type UserDefinedDataTypeCollection =
class
inherit SchemaCollectionBase
end
public final class UserDefinedDataTypeCollection extends SchemaCollectionBase
UserDefinedDataTypeCollection 类型公开以下成员。
属性
| 名称 | 说明 | |
|---|---|---|
.gif "公共属性") |
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 UserDefinedDataType object in the collection by index number. |
|
Item[String] | Gets a UserDefinedDataType object in the collection by name. |
|
Item[String, String] | Gets a UserDefinedDataType object in the collection by name and schema. |
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Parent | Gets the Database object that is the parent of the UserDefinedDataType object. |
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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 | |
|---|---|---|
.gif "公共方法") |
Add | Adds a UDT to the collection. |
.gif "受保护方法") |
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。） |
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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。） |
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CopyTo | Copies the collection objects to a one-dimensional array beginning at the index value specified. |
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Equals | （从 Object 继承。） |
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GetEnumerator | Returns an IEnumerator interface that allows you to iterate through the objects in the collection. （从 SmoCollectionBase 继承。） |
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GetHashCode | （从 Object 继承。） |
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GetType | （从 Object 继承。） |
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ItemById | Extracts a member from the UserDefinedDataTypeCollection collection using a system-defined, unique identifier. |
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Refresh() | Refreshes the referenced collection. （从 SmoCollectionBase 继承。） |
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Refresh(Boolean) | Refreshes the referenced collection with the option to refresh child objects of the referenced collection. （从 SmoCollectionBase 继承。） |
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ToString | （从 Object 继承。） |
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字段
| 名称 | 说明 | |
|---|---|---|
.gif "受保护字段") |
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 | |
|---|---|---|
.gif "显式接口实现") .gif "私有方法") |
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 UserDefinedDataTypeCollection object can be used to gain access to a set of user-defined data types. You can use the Item property to return a specific UserDefinedDataType 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
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。