Variable.DataType Propiedad

Definición

Espacio de nombres:

Microsoft.SqlServer.Dts.Runtime

Ensamblado:

Microsoft.SqlServer.ManagedDTS.dll

Obtiene una enumeración TypeCode que describe el tipo de datos de la variable. Esta propiedad es de sólo lectura.

public:
 property TypeCode DataType { TypeCode get(); };

[Microsoft.SqlServer.Dts.Runtime.Localization.LocalizablePropertyDescription(typeof(Microsoft.SqlServer.Dts.Runtime.Localized), "DataTypeDesc")]
[System.ComponentModel.Browsable(false)]
public TypeCode DataType { get; }

[<Microsoft.SqlServer.Dts.Runtime.Localization.LocalizablePropertyDescription(typeof(Microsoft.SqlServer.Dts.Runtime.Localized), "DataTypeDesc")>]
[<System.ComponentModel.Browsable(false)>]
member this.DataType : TypeCode

Public ReadOnly Property DataType As TypeCode

Valor de propiedad

TypeCode

Enumeración TypeCode que representa el tipo de datos de la variable.

Atributos

LocalizablePropertyDescriptionAttribute BrowsableAttribute

Ejemplos

En el ejemplo siguiente se crea un paquete, se agrega un ForEachLoopy se agrega una variable a la Variables colección de ForEachLoop. A continuación, recupera y establece propiedades en la variable y las muestra para su visualización, incluido .DataType

static void Main(string[] args)  
        {  
            Package p = new Package();  
            // Add a sequence to the package executables collection  
            Sequence seq = (Sequence)p.Executables.Add("STOCK:SEQUENCE");  
            // Add a ForEachLoop to the Sequence  
            ForEachLoop feLoop = (ForEachLoop)seq.Executables.Add("STOCK:FOREACHLOOP");  

            // Add a variable, v, to the variable collection  
           // of the ForEach loop.  
            Variable v = feLoop.Variables.Add("v", false, "global", 100);  

//  Get and set different variable properties  

            // Creation Name (read-only)  
            String createName = v.CreationName;  

            // Description (read/write)  
            v.Description = "my new v Description";  
            String vDesc = v.Description;  

            // ID (read-only)  
            String vID = v.ID;  

            // Name (read/write)  
            String oldName = v.Name;  
            v.Name = "my_new_V_name";  
            String newName = v.Name;  

            // Namespace (read/write)  
            String oldNamespace = v.Namespace;  
            v.Namespace = "my_new_v_Namespace";  
            String newNamespace = v.Namespace;  

            // Properties (read-only)  
            int pmCount = v.Properties.Count;  

            // Qualified Name (read-only)  
            String QName = v.QualifiedName;  

            // RaiseChangedEvent (read/write)  
            Boolean oldraiseChEvt = v.RaiseChangedEvent;  
            v.RaiseChangedEvent = true;  
            Boolean raiseChangedEvent = v.RaiseChangedEvent;  

            // Read-only (read/write)  
            Boolean vReadOnly = v.ReadOnly;  
            v.ReadOnly = true;  
            Boolean newVReadOnly = v.ReadOnly;  

            // System Variable (read-only)  
            Boolean sysVar = v.SystemVariable;  

            // Type (read-only)  
            TypeCode type = v.DataType;  

            // Value (read/write)  
            Object vValue = v.Value;  

            Console.WriteLine("The variable properties are: ");  
            Console.WriteLine("Creation Name   = {0}", createName);  
            Console.WriteLine("Description        = {0}", vDesc);  
            Console.WriteLine("ID                     = {0}", vID);  
            Console.WriteLine("Old name, new name = {0}, {1}", oldName, newName);  
            Console.WriteLine("Old namespace, new namespace = {0}, {1}", oldNamespace, newNamespace);  
            Console.WriteLine("Properties count   = {0}", pmCount);  
            Console.WriteLine("Qualified Name     = {0}", QName);  
            Console.WriteLine("old RaiseEvent, new RaiseEvent = {0}, {1}", oldraiseChEvt, raiseChangedEvent);  
            Console.WriteLine("old read-only, new read-only = {0}, {1}", vReadOnly, newVReadOnly);  
            Console.WriteLine("System Variable    = {0}", sysVar);  
            Console.WriteLine("Type               = {0}", type);  
        }  

Shared Sub Main(ByVal args() As String)   
    Dim p As New Package()  
    ' Add a sequence to the package executables collection  
    Dim seq As Sequence = CType(p.Executables.Add("STOCK:SEQUENCE"), Sequence)  
    ' Add a ForEachLoop to the Sequence  
    Dim feLoop As ForEachLoop = CType(seq.Executables.Add("STOCK:FOREACHLOOP"), ForEachLoop)  

    ' Add a variable, v, to the variable collection  
    ' of the ForEach loop.  
    Dim v As Variable = feLoop.Variables.Add("v", False, "global", 100)  

    '  Get and set different variable properties  
    ' Creation Name (read-only)  
    Dim createName As String = v.CreationName  

    ' Description (read/write)  
    v.Description = "my new v Description"  
    Dim vDesc As String = v.Description  

    ' ID (read-only)  
    Dim vID As String = v.ID  

    ' Name (read/write)  
    Dim oldName As String = v.Name  
    v.Name = "my_new_V_name"  
    Dim newName As String = v.Name  

    ' Namespace (read/write)  
    Dim oldNamespace As String = v.Namespace  
    v.Namespace = "my_new_v_Namespace"  
    Dim newNamespace As String = v.Namespace  

    ' Properties (read-only)  
    Dim pmCount As Integer = v.Properties.Count  

    ' Qualified Name (read-only)  
    Dim QName As String = v.QualifiedName  

    ' RaiseChangedEvent (read/write)  
    Dim oldraiseChEvt As [Boolean] = v.RaiseChangedEvent  
    v.RaiseChangedEvent = True  
    Dim raiseChangedEvent As [Boolean] = v.RaiseChangedEvent  

    ' Read-only (read/write)  
    Dim vReadOnly As [Boolean] = v.ReadOnly  
    v.ReadOnly = True  
    Dim newVReadOnly As [Boolean] = v.ReadOnly  

    ' System Variable (read-only)  
    Dim sysVar As [Boolean] = v.SystemVariable  

    ' Type (read-only)  
    Dim type As TypeCode = v.DataType  

    ' Value (read/write)  
    Dim vValue As [Object] = v.Value  

    Console.WriteLine("The variable properties are: ")  
    Console.WriteLine("Creation Name   = {0}", createName)  
    Console.WriteLine("Description        = {0}", vDesc)  
    Console.WriteLine("ID                     = {0}", vID)  
    Console.WriteLine("Old name, new name = {0}, {1}", oldName, newName)  
    Console.WriteLine("Old namespace, new namespace = {0}, {1}", oldNamespace, newNamespace)  
    Console.WriteLine("Properties count   = {0}", pmCount)  
    Console.WriteLine("Qualified Name     = {0}", QName)  
    Console.WriteLine("old RaiseEvent, new RaiseEvent = {0}, {1}", oldraiseChEvt, raiseChangedEvent)  
    Console.WriteLine("old read-only, new read-only = {0}, {1}", vReadOnly, newVReadOnly)  
    Console.WriteLine("System Variable    = {0}", sysVar)  
    Console.WriteLine("Type               = {0}", type)  
End Sub   

Salida del ejemplo:

Las propiedades de la variable son:

Nombre de creación =

Descripción = mi nueva descripción v

Id. = {622CF328-55D7-4E81-9385-9C1F8450511E}

Nombre anterior, nuevo nombre = v, my_new_V_name

Espacio de nombres antiguo, nuevo espacio de nombres = global, my_new_v_Namespace

Recuento de propiedades = 12

Nombre completo = my_new_v_Namespace::my_new_V_name

old RaiseEvent, new RaiseEvent = False, True

old read-only, new read-only = False, True

Variable del sistema = False

Type = Int32

Comentarios

El DataType de una variable no se establece explícitamente, pero se deduce del valor inicial asignado a la variable y no se puede cambiar después.