Nullable 属性

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

命名空间：  ReportService2006
程序集：  ReportService2006（在 ReportService2006.dll 中）

语法

声明
Public Property Nullable As Boolean
    Get
    Set
用法
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)

属性值

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

注释

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 省略可选 Web 服务对象的值.

请参阅

参考

ReportParameter 类

ReportService2006 命名空间