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Variable-Klasse

Represents a variable on a package, task, or container. This class cannot be inherited.

Vererbungshierarchie

System. . :: . .Object
  Microsoft.SqlServer.Dts.Runtime. . :: . .DtsObject
    Microsoft.SqlServer.Dts.Runtime..::..Variable

Namespace:  Microsoft.SqlServer.Dts.Runtime
Assembly:  Microsoft.SqlServer.ManagedDTS (in Microsoft.SqlServer.ManagedDTS.dll)

Syntax

'Declaration
Public NotInheritable Class Variable _
    Inherits DtsObject _
    Implements IDTSPersist, IDTSName, IDTSPropertiesProvider, IDTSPackagePath,  _
    IComponent, IDisposable
'Usage
Dim instance As Variable
public sealed class Variable : DtsObject, 
    IDTSPersist, IDTSName, IDTSPropertiesProvider, IDTSPackagePath, IComponent, 
    IDisposable
public ref class Variable sealed : public DtsObject, 
    IDTSPersist, IDTSName, IDTSPropertiesProvider, IDTSPackagePath, IComponent, 
    IDisposable
[<SealedAttribute>]
type Variable =  
    class
        inherit DtsObject
        interface IDTSPersist
        interface IDTSName
        interface IDTSPropertiesProvider
        interface IDTSPackagePath
        interface IComponent
        interface IDisposable
    end
public final class Variable extends DtsObject implements IDTSPersist, IDTSName, IDTSPropertiesProvider, IDTSPackagePath, IComponent, IDisposable

Der Variable-Typ macht folgende Elemente verfügbar.

Eigenschaften

  Name Beschreibung
Öffentliche Eigenschaft CreationName Returns the string that the runtime engine gives when it creates an instance of the Variable object and adds the object to the Variables collection. This property is read-only.
Öffentliche Eigenschaft DataType Returns a TypeCode enumeration that describes the data type of the variable. This property is read-only.
Öffentliche Eigenschaft Description Gets or sets the description for the variable.
Öffentliche Eigenschaft EvaluateAsExpression Gets or sets a Boolean that indicates that the variable contains an expression.
Öffentliche Eigenschaft Expression Gets or sets the expression contained in a variable.
Öffentliche Eigenschaft ID The GUID assigned to the variable. This field is read-only.
Öffentliche Eigenschaft IncludeInDebugDump Gets or sets a value that specifies whether the variable value for a user-defined variable or a system variable is included in the debug dump files.
Öffentliche Eigenschaft Name Gets or sets the name of the variable.
Öffentliche Eigenschaft Namespace Gets or sets the namespace that the variable belongs to.
Öffentliche Eigenschaft Properties Returns a collection of DtsProperty objects. This property is read-only.
Öffentliche Eigenschaft QualifiedName Gets the fully qualified name of the variable, including the namespace. This property is read-only.
Öffentliche Eigenschaft RaiseChangedEvent A Boolean that indicates if the variable has been flagged to raise the OnVariableValueChanged event when the value of the variable changes.
Öffentliche Eigenschaft ReadOnly Gets or sets a Boolean that indicates that the variable is read-only and cannot have its value modified.
Öffentliche Eigenschaft Site Infrastruktur
Öffentliche Eigenschaft SystemVariable Returns a Boolean that indicates if the variable is a system variable. This property is read-only.
Öffentliche Eigenschaft Value Gets or sets the value assigned to the variable.

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Methoden

  Name Beschreibung
Öffentliche Methode Dispose This method is inherited from the IDisposable.Dispose method, which is a mechanism to explicitly tell an object to perform cleanup.
Öffentliche Methode Equals Determines whether two object instances are equal. (Geerbt von DtsObject.)
Geschützte Methode Finalize (Geerbt von Object.)
Öffentliche Methode GetExpression The GetExpression method is not supported on Variable objects. Use the EvaluateAsExpression property instead.
Öffentliche Methode GetHashCode Returns the hash code for this instance. (Geerbt von DtsObject.)
Öffentliche Methode GetPackagePath Returns the path of the package that the variable belongs to.
Öffentliche Methode GetType (Geerbt von Object.)
Öffentliche Methode LoadFromXML This method is not callable by your application code. To load a package saved as .xml, use the Application..::..LoadPackage method.
Geschützte Methode MemberwiseClone (Geerbt von Object.)
Öffentliche Methode SaveToXML This method is not callable by your application code. To save a package as .xml, use the Application..::..SaveToXml method.
Öffentliche Methode SetExpression The SetExpression method is not supported on Variable objects. Use the EvaluateAsExpression property instead.
Öffentliche Methode ToString (Geerbt von Object.)

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Ereignisse

  Name Beschreibung
Öffentliches Ereignis Disposed Adds an event handler to listen to the Disposed event on the Variable.

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Hinweise

Variables are grouped into namespaces for disambiguation. The System namespace is created automatically for every package and contains read-only properties. The User namespace contains custom properties that you can add. You can also create a namespace of your choosing to which to add variables. This class inherits from several classes and interfaces, including two from the Visual Studio .NET Framework:

Threadsicherheit

Alle öffentlichen static (Shared in Visual Basic)-Elemente dieses Typs sind Threadsicher. Für Instanzelemente wird die Threadsicherheit nicht gewährleistet.