PasswordPropertyTextAttribute 类

定义

指示对象的文本表示形式被星号等字符隐匿。Indicates that an object's text representation is obscured by characters such as asterisks. 无法继承此类。This class cannot be inherited.

public ref class PasswordPropertyTextAttribute sealed : Attribute
public sealed class PasswordPropertyTextAttribute : Attribute
[System.AttributeUsage(System.AttributeTargets.All)]
public sealed class PasswordPropertyTextAttribute : Attribute
type PasswordPropertyTextAttribute = class
    inherit Attribute
Public NotInheritable Class PasswordPropertyTextAttribute
Inherits Attribute
继承
PasswordPropertyTextAttribute
属性

示例

下面的代码示例演示如何使用 PasswordPropertyTextAttribute 来遮蔽 PropertyGrid 控件中字符串属性的值。The following code example demonstrates using the PasswordPropertyTextAttribute to obscure the value of a string property in a PropertyGrid control. 有关完整的代码清单,请参阅如何:在 Windows 窗体控件中应用特性For a full code listing, see How to: Apply Attributes in Windows Forms Controls.

// This property exists only to demonstrate the 
// PasswordPropertyText attribute. When this control 
// is attached to a PropertyGrid control, the returned 
// string will be displayed with obscuring characters
// such as asterisks. This property has no other effect.
[Category("Security")]
[Description("Demonstrates PasswordPropertyTextAttribute.")]
[PasswordPropertyText(true)]
public string Password
{
    get
    {
        return "This is a demo password.";
    }
}
' This property exists only to demonstrate the 
' PasswordPropertyText attribute. When this control 
' is attached to a PropertyGrid control, the returned 
' string will be displayed with obscuring characters
' such as asterisks. This property has no other effect.
<Category("Security"), _
Description("Demonstrates PasswordPropertyTextAttribute."), _
PasswordPropertyText(True)> _
Public ReadOnly Property Password() As String
    Get
        Return "This is a demo password."
    End Get
End Property

注解

如果将 PasswordPropertyTextAttribute 特性放置在属性或类型上,则属性窗口中其文本表示形式显示为点或星号以指示密码字段。If the PasswordPropertyTextAttribute attribute is placed on a property or a type, its text representation in a property window appears as dots or asterisks to indicate a password field.

注意

此指示不表示任何类型的加密或安全性。This indication in no way represents any type of encryption or security. 有关使用特性的详细信息,请参阅特性For more information about using attributes, see Attributes.

构造函数

PasswordPropertyTextAttribute()

初始化 PasswordPropertyTextAttribute 类的新实例。Initializes a new instance of the PasswordPropertyTextAttribute class.

PasswordPropertyTextAttribute(Boolean)

初始化 PasswordPropertyTextAttribute 类的新实例,有选择地显示密码文本。Initializes a new instance of the PasswordPropertyTextAttribute class, optionally showing password text.

字段

Default

指定 PasswordPropertyTextAttribute 的默认值。Specifies the default value for the PasswordPropertyTextAttribute.

No

指定文本属性并不作为密码使用。Specifies that a text property is not used as a password. static(在 Visual Basic 中为 Shared)字段为只读字段。This static (Shared in Visual Basic) field is read-only.

Yes

指定将文本属性作为密码使用。Specifies that a text property is used as a password. static(在 Visual Basic 中为 Shared)字段为只读字段。This static (Shared in Visual Basic) field is read-only.

属性

Password

获取一个值,该值指示为其定义了 PasswordPropertyTextAttribute 的属性是否应作为密码文本显示。Gets a value indicating if the property for which the PasswordPropertyTextAttribute is defined should be shown as password text.

TypeId

在派生类中实现时,获取此 Attribute 的唯一标识符。When implemented in a derived class, gets a unique identifier for this Attribute.

(继承自 Attribute)

方法

Equals(Object)

确定两个 PasswordPropertyTextAttribute 实例是否相等。Determines whether two PasswordPropertyTextAttribute instances are equal.

GetHashCode()

返回此实例的哈希代码。Returns the hash code for this instance.

GetType()

获取当前实例的 TypeGets the Type of the current instance.

(继承自 Object)
IsDefaultAttribute()

返回此实例值是否为默认值的指示。Returns an indication whether the value of this instance is the default value.

Match(Object)

当在派生类中重写时,返回一个指示此实例是否等于指定对象的值。When overridden in a derived class, returns a value that indicates whether this instance equals a specified object.

(继承自 Attribute)
MemberwiseClone()

创建当前 Object 的浅表副本。Creates a shallow copy of the current Object.

(继承自 Object)
ToString()

返回一个表示当前对象的 string。Returns a string that represents the current object.

(继承自 Object)

显式接口实现

_Attribute.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr)

将一组名称映射为对应的一组调度标识符。Maps a set of names to a corresponding set of dispatch identifiers.

(继承自 Attribute)
_Attribute.GetTypeInfo(UInt32, UInt32, IntPtr)

检索对象的类型信息,然后可以使用该信息获取接口的类型信息。Retrieves the type information for an object, which can be used to get the type information for an interface.

(继承自 Attribute)
_Attribute.GetTypeInfoCount(UInt32)

检索对象提供的类型信息接口的数量(0 或 1)。Retrieves the number of type information interfaces that an object provides (either 0 or 1).

(继承自 Attribute)
_Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr)

提供对某一对象公开的属性和方法的访问。Provides access to properties and methods exposed by an object.

(继承自 Attribute)

适用于