ControlValuePropertyAttribute 建構函式

public:
 ControlValuePropertyAttribute(System::String ^ name);

public ControlValuePropertyAttribute(string name);

new System.Web.UI.ControlValuePropertyAttribute : string -> System.Web.UI.ControlValuePropertyAttribute

Public Sub New (name As String)

參數

範例

以下程式碼範例示範如何套用 ControlValuePropertyAttribute 一個屬性，指定預設屬性給自訂控制項。 ASP.NET 內部呼叫此建構子以建立 ControlValuePropertyAttribute 代表該屬性的物件。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Text;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace Samples.AspNet.CS.Controls
{
    // Set ControlValueProperty attribute to specify the default
    // property of this control that a ControlParameter object 
    // binds to at run time.
    [DefaultProperty("Text")]
    [ControlValueProperty("Text")]
    public class SimpleCustomControl : WebControl
    {
        private string text;

        [Bindable(true)]
        [Category("Appearance")]
        [DefaultValue("")]
        public string Text
        {
            get
            {
                return text;
            }
            set
            {
                text = value;
            }
        }

        protected override void Render(HtmlTextWriter output)
        {
            output.Write(Text);
        }
    }
}

Imports System.ComponentModel
Imports System.Web.UI

Namespace Samples.AspNet.VB.Controls

    ' Set ControlValueProperty attribute to specify the default
    ' property of this control that a ControlParameter object 
    ' binds to at run time.
    <DefaultProperty("Text"), ControlValueProperty("Text")> Public Class SimpleCustomControl
        Inherits System.Web.UI.WebControls.WebControl

        Dim _text As String

        <Bindable(True), Category("Appearance"), DefaultValue("")> Property [Text]() As String
            Get
                Return _text
            End Get

            Set(ByVal Value As String)
                _text = Value
            End Set
        End Property

        Protected Overrides Sub Render(ByVal output As System.Web.UI.HtmlTextWriter)
            output.Write([Text])
        End Sub

    End Class

End Namespace

備註

使用此建構子建立一個新的類別實例 ControlValuePropertyAttribute ，使用指定的屬性名稱。 下表顯示該 ControlValuePropertyAttribute 類別實例的初始屬性值。

另請參閱

• Name

public:
 ControlValuePropertyAttribute(System::String ^ name, System::Object ^ defaultValue);

public ControlValuePropertyAttribute(string name, object defaultValue);

new System.Web.UI.ControlValuePropertyAttribute : string * obj -> System.Web.UI.ControlValuePropertyAttribute

Public Sub New (name As String, defaultValue As Object)

參數

範例

以下程式碼範例示範如何將 ControlValuePropertyAttribute 指定預設屬性與值的屬性套用到自訂控制項。 ASP.NET 內部呼叫此建構子以建立 ControlValuePropertyAttribute 代表該屬性的物件。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Text;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace Samples.AspNet.CS.Controls
{
    // Set ControlValueProperty attribute to specify the default
    // property of this control that a ControlParameter object 
    // binds to at run time.
    [DefaultProperty("Text")]
    [ControlValueProperty("Text", "Default Text")]
    public class SimpleCustomControl : WebControl
    {
        private string text;

        [Bindable(true)]
        [Category("Appearance")]
        [DefaultValue("")]
        public string Text
        {
            get
            {
                return text;
            }
            set
            {
                text = value;
            }
        }

        protected override void Render(HtmlTextWriter output)
        {
            output.Write(Text);
        }
    }
}

Imports System.ComponentModel
Imports System.Web.UI

Namespace Samples.AspNet.VB.Controls

    ' Set ControlValueProperty attribute to specify the default
    ' property of this control that a ControlParameter object 
    ' binds to at run time.
    <DefaultProperty("Text"), ControlValueProperty("Text", "DefaultText")> Public Class SimpleCustomControl
        Inherits System.Web.UI.WebControls.WebControl

        Dim _text As String

        <Bindable(True), Category("Appearance"), DefaultValue("")> Property [Text]() As String
            Get
                Return _text
            End Get

            Set(ByVal Value As String)
                _text = Value
            End Set
        End Property

        Protected Overrides Sub Render(ByVal output As System.Web.UI.HtmlTextWriter)
            output.Write([Text])
        End Sub

    End Class

End Namespace

備註

使用此建構子，使用指定的屬性名稱與預設值建立新的類別實例 ControlValuePropertyAttribute 。 下表顯示該 ControlValuePropertyAttribute 類別實例的初始屬性值。

另請參閱

• Name
• DefaultValue

public:
 ControlValuePropertyAttribute(System::String ^ name, Type ^ type, System::String ^ defaultValue);

public ControlValuePropertyAttribute(string name, Type type, string defaultValue);

new System.Web.UI.ControlValuePropertyAttribute : string * Type * string -> System.Web.UI.ControlValuePropertyAttribute

Public Sub New (name As String, type As Type, defaultValue As String)

參數

備註

使用此建構子，使用指定的屬性名稱與預設值建立新的類別實例 ControlValuePropertyAttribute 。 此版本的建構子也會嘗試將預設值轉換為參數指定的 type 資料型態。 如果預設值無法轉換，該 DefaultValue 屬性就不會被設定。 下表顯示該 ControlValuePropertyAttribute 類別實例的初始屬性值。

另請參閱

• Type
• Name
• DefaultValue