LookupBindingPropertiesAttribute 類別

定義

指定支援查閱架構之繫結的屬性。Specifies the properties that support lookup-based binding. 此類別無法獲得繼承。This class cannot be inherited.

public ref class LookupBindingPropertiesAttribute sealed : Attribute
public sealed class LookupBindingPropertiesAttribute : Attribute
[System.AttributeUsage(System.AttributeTargets.Class)]
public sealed class LookupBindingPropertiesAttribute : Attribute
type LookupBindingPropertiesAttribute = class
    inherit Attribute
Public NotInheritable Class LookupBindingPropertiesAttribute
Inherits Attribute
繼承
LookupBindingPropertiesAttribute
屬性

範例

下列程式碼範例顯示搭配以查閱為基礎的系結所使用的屬性。The following code example shows properties used with lookup-based binding.

// The DemoControl class shows properties 
// used with lookup-based binding.
[LookupBindingProperties(
    "DataSource", 
    "DisplayMember", 
    "ValueMember", 
    "LookupMember")]
public class DemoControl : Control
{   
}
' The DemoControl class shows properties 
' used with lookup-based binding.
<LookupBindingProperties( _
"DataSource", _
"DisplayMember", _
"ValueMember", _
"LookupMember")> _
Public Class DemoControl
    Inherits Control
End Class

LookupBindingPropertiesAttribute 屬性必須包含全部四個成員,但取消值時除外。The LookupBindingPropertiesAttribute attribute must include all four members, except when unsetting values. 下列程式碼範例顯示 ComboBox 控制項。The following code example shows the ComboBox control.

// The DemoComboBox control shows a standard
// combo box binding definition.
[LookupBindingProperties(
    "DataSource", 
    "DisplayMember", 
    "ValueMember", 
    "SelectedValue")]
public class DemoComboBox : Control
{
}
' The DemoComboBox control shows a standard
' combo box binding definition.
<LookupBindingProperties( _
"DataSource", _
"DisplayMember", _
"ValueMember", _
"SelectedValue")> _
Public Class DemoComboBox
    Inherits Control
End Class

下列程式碼範例顯示控制項可以同時支援簡單系結和清單系結。The following code example shows that a control can support both simple binding as well as list binding.

// The DemoComboBox2 class shows that a control can
// support both simple binding as well as list binding.
[LookupBindingProperties(
    "DataSource", 
    "DisplayMember", 
    "ValueMember", 
    "SelectedValue")]
[DefaultBindingProperty("Text")]
public class DemoComboBox2 : Control 
{
}
' The DemoComboBox2 class shows that a control can
' support both simple binding as well as list binding.
<LookupBindingProperties( _
"DataSource", _
"DisplayMember", _
"ValueMember", _
"SelectedValue"), _
DefaultBindingProperty("Text")> _
Public Class DemoComboBox2
    Inherits Control
End Class

下列程式碼範例顯示 LookupBindingPropertiesAttribute 屬性可以藉由不指定引數來取消設定。The following code example shows that the LookupBindingPropertiesAttribute attribute can be unset by specifying no arguments.

// NonBindableCombo control shows how to unset the
// LookupBindingProperties by specifying no arguments.
[LookupBindingProperties()]
public class NonBindableCombo : Control
{
}
' NonBindableCombo control shows how to unset the
' LookupBindingProperties by specifying no arguments.
<LookupBindingProperties()>  _
Public Class NonBindableCombo
    Inherits Control
End Class

備註

LookupBindingPropertiesAttribute 是用來指定搭配以查閱為基礎的系結所使用的屬性,特別是 ListBoxComboBox 控制項。The LookupBindingPropertiesAttribute is used to specify the properties used with lookup-based binding, particularly ListBox and ComboBox controls.

LookupBindingPropertiesAttribute 是在類別層級指定。The LookupBindingPropertiesAttribute is specified at the class level. 類別可以是繼承的,而且不允許在相同類別上有多個屬性。The class can be inherited and does not allow multiple attributes on the same class.

建構函式

LookupBindingPropertiesAttribute()

不使用參數來初始化 LookupBindingPropertiesAttribute 類別的新執行個體。Initializes a new instance of the LookupBindingPropertiesAttribute class using no parameters.

LookupBindingPropertiesAttribute(String, String, String, String)

初始化 LookupBindingPropertiesAttribute 類別的新執行個體。Initializes a new instance of the LookupBindingPropertiesAttribute class.

欄位

Default

表示 LookupBindingPropertiesAttribute 類別的預設值。Represents the default value for the LookupBindingPropertiesAttribute class.

屬性

DataSource

取得 LookupBindingPropertiesAttribute 所繫結之元件的資料來源屬性名稱。Gets the name of the data source property for the component to which the LookupBindingPropertiesAttribute is bound.

DisplayMember

取得 LookupBindingPropertiesAttribute 所繫結之元件的顯示成員屬性名稱。Gets the name of the display member property for the component to which the LookupBindingPropertiesAttribute is bound.

LookupMember

取得這個屬性所繫結之元件的查閱成員名稱。Gets the name of the lookup member for the component to which this attribute is bound.

TypeId

在衍生類別中實作時,取得這個 Attribute 的唯一識別碼。When implemented in a derived class, gets a unique identifier for this Attribute.

(繼承來源 Attribute)
ValueMember

取得 LookupBindingPropertiesAttribute 所繫結之元件的值成員屬性名稱。Gets the name of the value member property for the component to which the LookupBindingPropertiesAttribute is bound.

方法

Equals(Object)

判斷指定的 Object 和目前的 LookupBindingPropertiesAttribute 執行個體是否相等。Determines whether the specified Object is equal to the current LookupBindingPropertiesAttribute instance.

GetHashCode()

傳回這個執行個體的雜湊碼。Returns the hash code for this instance.

GetType()

取得目前執行個體的 TypeGets the Type of the current instance.

(繼承來源 Object)
IsDefaultAttribute()

在衍生類別中覆寫時,表示這個執行個體的值是衍生類別的預設值。When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class.

(繼承來源 Attribute)
Match(Object)

在衍生類別中覆寫時,會傳回值,表示這個執行個體是否等於指定物件。When overridden in a derived class, returns a value that indicates whether this instance equals a specified object.

(繼承來源 Attribute)
MemberwiseClone()

建立目前 Object 的淺層複製。Creates a shallow copy of the current Object.

(繼承來源 Object)
ToString()

傳回代表目前物件的字串。Returns a string that represents the current object.

(繼承來源 Object)

明確介面實作

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

將一組名稱對應至一組對應的分派識別項 (Dispatch Identifier)。Maps a set of names to a corresponding set of dispatch identifiers.

(繼承來源 Attribute)
_Attribute.GetTypeInfo(UInt32, UInt32, IntPtr)

擷取物件的類型資訊,可以用來取得介面的類型資訊。Retrieves the type information for an object, which can be used to get the type information for an interface.

(繼承來源 Attribute)
_Attribute.GetTypeInfoCount(UInt32)

擷取物件提供的類型資訊介面數目 (0 或 1)。Retrieves the number of type information interfaces that an object provides (either 0 or 1).

(繼承來源 Attribute)
_Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr)

提供物件所公開的屬性和方法的存取權。Provides access to properties and methods exposed by an object.

(繼承來源 Attribute)

適用於

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