Nullable 屬性

Gets or sets a value that indicates whether the value of the parameter can be nullNothingnullptrunitnull 參考 (在 Visual Basic 中為 Nothing).

命名空間：  ReportService2006
組件：  ReportService2006 (在 ReportService2006.dll 中)

語法

'宣告
Public Property Nullable As Boolean
    Get
    Set
'用途
Dim instance As ReportParameter
Dim value As Boolean

value = instance.Nullable

instance.Nullable = value

public bool Nullable { get; set; }

public:
property bool Nullable {
    bool get ();
    void set (bool value);
}

member Nullable : bool with get, set

function get Nullable () : boolean
function set Nullable (value : boolean)

屬性值

型別：System. . :: . .Boolean
true if the value of the parameter can be nullNothingnullptrunitnull 參考 (在 Visual Basic 中為 Nothing); otherwise, false. The default is false.

備註

The value for the Nullable property has a corresponding NullableSpecified property that indicates whether this property should be omitted from the Web service call.

For more information about omitting properties, see 省略選擇性 Web 服務物件的值.

請參閱

參考

ReportParameter 類別

ReportService2006 命名空間