ColumnCollection-Klasse
The ColumnCollection class represents a collection of Column objects that represent all the columns defined on a table.
Vererbungshierarchie
System.Object
Microsoft.SqlServer.Management.Smo.AbstractCollectionBase
Microsoft.SqlServer.Management.Smo.SmoCollectionBase
Microsoft.SqlServer.Management.Smo.ArrayListCollectionBase
Microsoft.SqlServer.Management.Smo.ParameterCollectionBase
Microsoft.SqlServer.Management.Smo.ColumnCollection
Namespace: Microsoft.SqlServer.Management.Smo
Assembly: Microsoft.SqlServer.Smo (in Microsoft.SqlServer.Smo.dll)
Syntax
'Declaration
Public NotInheritable Class ColumnCollection _
Inherits ParameterCollectionBase
'Usage
Dim instance As ColumnCollection
public sealed class ColumnCollection : ParameterCollectionBase
public ref class ColumnCollection sealed : public ParameterCollectionBase
[<SealedAttribute>]
type ColumnCollection =
class
inherit ParameterCollectionBase
end
public final class ColumnCollection extends ParameterCollectionBase
Der ColumnCollection-Typ macht folgende Elemente verfügbar.
Eigenschaften
| Name | Beschreibung | |
|---|---|---|
.gif "Öffentliche Eigenschaft") |
Count | Gets the number of objects in the referenced collection. (Geerbt von SmoCollectionBase.) |
|
IsSynchronized | Gets the Boolean property value that specifies whether access to the collection is synchronized and therefore thread-safe. (Geerbt von SmoCollectionBase.) |
|
Item[Int32] | Gets a Column object in the collection by index number. |
|
Item[String] | Gets a Column object in the collection by name. |
|
Parent | Gets the SqlSmoObject object that is the parent of the ColumnCollection object. |
|
SyncRoot | Gets an object that can be used to synchronize access to the collection. (Geerbt von SmoCollectionBase.) |
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Methoden
| Name | Beschreibung | |
|---|---|---|
.gif "Öffentliche Methode") |
Add(Column) | Adds a Column object to the ColumnCollection collection. |
|
Add(Column, Int32) | Adds a Column object to the ColumnCollection collection at a specified position. |
|
Add(Column, String) | Adds a Column object to the ColumnCollection collection after a specified Column object currently in the ColumnCollection collection. |
.gif "Geschützte Methode") |
AddExisting | Adds an object to the collection. (Geerbt von AbstractCollectionBase.) |
|
Contains | Validates whether the parameter collection contains a member with a name equal to the specified string. (Geerbt von ParameterCollectionBase.) |
|
CopyTo | Copies the collection objects to a one-dimensional array beginning at the index value specified. |
|
Equals | (Geerbt von Object.) |
|
GetEnumerator | Returns an IEnumerator interface that allows you to iterate through the objects in the collection. (Geerbt von SmoCollectionBase.) |
|
GetHashCode | (Geerbt von Object.) |
|
GetType | (Geerbt von Object.) |
|
ItemById | Extracts a member from the ColumnCollection collection using a system-defined, unique identifier. |
|
Refresh() | Refreshes the referenced collection. (Geerbt von SmoCollectionBase.) |
|
Refresh(Boolean) | Refreshes the referenced collection with the option to refresh child objects of the referenced collection. (Geerbt von SmoCollectionBase.) |
|
Remove(String) | Removes a member from the collection with the specified name. (Geerbt von ParameterCollectionBase.) |
|
Remove(Column) | Removes a Column object from the ColumnCollection collection. |
|
ToString | (Geerbt von Object.) |
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Felder
| Name | Beschreibung | |
|---|---|---|
.gif "Geschütztes Feld") |
initialized | This value supports the SMO infrastructure and is not intended to be used directly from your code. (Geerbt von AbstractCollectionBase.) |
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Explizite Schnittstellenimplementierungen
| Name | Beschreibung | |
|---|---|---|
.gif "Explizite Schnittstellenimplementierung") .gif "Private Methode") |
ICollection.CopyTo | Copies the elements from an instance to an array beginning at the index indicated. (Geerbt von SmoCollectionBase.) |
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Hinweise
A ColumnCollection object can be used to gain access to a set of columns. You can use the Item property to return a specific Column object.
Thread Safety
Alle öffentlichen, statischen Elemente dieses Typs (Shared in Microsoft Visual Basic) sind für Vorgänge mit mehreren Threads sicher. Bei Instanzmembern ist die Threadsicherheit nicht gewährleistet.
Beispiele
Threadsicherheit
Alle öffentlichen static (Shared in Visual Basic)-Elemente dieses Typs sind Threadsicher. Für Instanzelemente wird die Threadsicherheit nicht gewährleistet.