EditorPartCollection 類別

參考

定義

命名空間:: System.Web.UI.WebControls.WebParts

組件:: System.Web.dll

重要

部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。

包含 EditorPart 控制項的集合，用來編輯 WebPart 控制項的屬性、配置、外觀和行為。此類別無法獲得繼承。

public ref class EditorPartCollection sealed : System::Collections::ReadOnlyCollectionBase

public sealed class EditorPartCollection : System.Collections.ReadOnlyCollectionBase

type EditorPartCollection = class
    inherit ReadOnlyCollectionBase

Public NotInheritable Class EditorPartCollection
Inherits ReadOnlyCollectionBase

繼承: Object

ReadOnlyCollectionBase
EditorPartCollection

範例

下列程式代碼範例示範類別的數個 EditorPartCollection 用法。此程式代碼範例有四個部分：

使用者控制元件，可讓您變更網頁元件頁面上的顯示模式。
名為的自定義WebPart控件類別，該控件會在網頁中參考，並由控件編輯EditorPart。TextDisplayWebPart
參考控件的TextDisplayWebPart網頁，包含控件，其中包含區域中所宣告之 Web 元件控制項集的EditorPart數個EditorZone控制項，並包含一些事件驅動程式碼來建立及操作EditorPartCollection物件。
說明當您在瀏覽器中載入程式碼範例時，程式代碼範例的運作方式。

此程式代碼範例的第一個部分是使用者控制項，可讓使用者變更網頁上的顯示模式。如需此控件中原始碼顯示模式和描述的詳細資訊，請參閱逐步解說：變更網頁元件頁面上的顯示模式。

<%@ control language="C#" classname="DisplayModeMenuCS"%>

<script runat="server">
  
 // Use a field to reference the current WebPartManager.
  WebPartManager _manager;

  void Page_Init(object sender, EventArgs e)
  {
    Page.InitComplete += new EventHandler(InitComplete);
  }  

  void InitComplete(object sender, System.EventArgs e)
  {
    _manager = WebPartManager.GetCurrentWebPartManager(Page);

    String browseModeName = WebPartManager.BrowseDisplayMode.Name;

    // Fill the dropdown with the names of supported display modes.
    foreach (WebPartDisplayMode mode in _manager.SupportedDisplayModes)
    {
      String modeName = mode.Name;
      // Make sure a mode is enabled before adding it.
      if (mode.IsEnabled(_manager))
      {
        ListItem item = new ListItem(modeName, modeName);
        DisplayModeDropdown.Items.Add(item);
      }
    }
  }
 
  // Change the page to the selected display mode.
  void DisplayModeDropdown_SelectedIndexChanged(object sender, 
    EventArgs e)
  {
    String selectedMode = DisplayModeDropdown.SelectedValue;

    WebPartDisplayMode mode = 
      _manager.SupportedDisplayModes[selectedMode];
    if (mode != null)
      _manager.DisplayMode = mode;

  }

  void Page_PreRender(object sender, EventArgs e)
  {
    DisplayModeDropdown.SelectedValue = 
      _manager.DisplayMode.Name;
  }

</script>
<div>
  <asp:Panel ID="Panel1" runat="server" 
    Borderwidth="1" 
    Width="125" 
    BackColor="lightgray"
    Font-Names="Verdana, Arial, Sans Serif" >
  <asp:Label ID="Label1" runat="server" 
    Text=" Display Mode" 
    Font-Bold="true"
    Font-Size="8"
    Width="120" 
    AssociatedControlID="DisplayModeDropdown"/>
  <asp:DropDownList ID="DisplayModeDropdown" 
    runat="server"  
    AutoPostBack="true" 
    Width="120"
    OnSelectedIndexChanged="DisplayModeDropdown_SelectedIndexChanged" />
  </asp:Panel>
</div>

<%@ control language="vb" classname="DisplayModeMenuVB"%>

<script runat="server">
  
' Use a field to reference the current WebPartManager.
Dim _manager As WebPartManager


Sub Page_Init(ByVal sender As Object, ByVal e As EventArgs) 
    AddHandler Page.InitComplete, AddressOf InitComplete

End Sub 


Sub InitComplete(ByVal sender As Object, ByVal e As System.EventArgs) 
    _manager = WebPartManager.GetCurrentWebPartManager(Page)
    
    Dim browseModeName As String = _
      WebPartManager.BrowseDisplayMode.Name
    
    ' Fill the dropdown with the names of supported display modes.
    Dim mode As WebPartDisplayMode
    For Each mode In  _manager.SupportedDisplayModes
        Dim modeName As String = mode.Name
        ' Make sure a mode is enabled before adding it.
        If mode.IsEnabled(_manager) Then
        Dim item As New ListItem(modeName, modeName)
            DisplayModeDropdown.Items.Add(item)
        End If
    Next mode

End Sub 
 

' Change the page to the selected display mode.
  Sub DisplayModeDropdown_SelectedIndexChanged(ByVal sender As Object, _
    ByVal e As EventArgs)
    Dim selectedMode As String = DisplayModeDropdown.SelectedValue
    
    Dim mode As WebPartDisplayMode = _
      _manager.SupportedDisplayModes(selectedMode)
    If Not (mode Is Nothing) Then
      _manager.DisplayMode = mode
    End If
 
  End Sub


Sub Page_PreRender(ByVal sender As Object, ByVal e As EventArgs) 
    DisplayModeDropdown.SelectedValue = _manager.DisplayMode.Name

End Sub 

</script>
<div>
  <asp:Panel ID="Panel1" runat="server" 
    Borderwidth="1" 
    Width="125" 
    BackColor="lightgray"
    Font-Names="Verdana, Arial, Sans Serif" >
  <asp:Label ID="Label1" runat="server" 
    Text=" Display Mode" 
    Font-Bold="true"
    Font-Size="8"
    Width="120" 
    AssociatedControlID="DisplayModeDropdown"/>
  <asp:DropDownList ID="DisplayModeDropdown" 
    runat="server"  
    AutoPostBack="true" 
    Width="120"
    OnSelectedIndexChanged="DisplayModeDropdown_SelectedIndexChanged" />
  </asp:Panel>
</div>

程式代碼範例的第二個部分是 TextDisplayWebPart 控件。若要執行程式碼範例，您必須編譯此原始程式碼。您可以明確地編譯它，並將產生的元件放在網站的 Bin 資料夾或全域程式集緩存中。或者，您也可以將原始程式碼放在月臺的 App_Code資料夾中，在運行時間會動態編譯原始程式碼。如需示範這兩種編譯方法的逐步解說，請參閱逐步解說：開發和使用自定義 Web 伺服器控制件。

請注意，控件具有名為 ContentText的屬性;這個屬性會保留使用者在文字框中輸入的值。當控件處於編輯模式，以及標準 WebPart 控件屬性時，可以編輯這個自定義屬性。

using System;
using System.Collections;
using System.ComponentModel;
using System.Drawing;
using System.Security.Permissions;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;

namespace Samples.AspNet.CS.Controls
{
  [AspNetHostingPermission(SecurityAction.Demand,
    Level = AspNetHostingPermissionLevel.Minimal)]
  [AspNetHostingPermission(SecurityAction.InheritanceDemand,
    Level = AspNetHostingPermissionLevel.Minimal)]
  public class TextDisplayWebPart : WebPart
  {
    private String _contentText = null;
    TextBox input;
    Label DisplayContent;
    Literal lineBreak;

    [Personalizable(), WebBrowsable]
    public String ContentText
    {
      get { return _contentText; }
      set { _contentText = value; }
    }

    protected override void CreateChildControls()
    {
      Controls.Clear();
      DisplayContent = new Label();
      DisplayContent.BackColor = Color.LightBlue;
      DisplayContent.Text = this.ContentText;
      this.Controls.Add(DisplayContent);

      lineBreak = new Literal();
      lineBreak.Text = @"<br />";
      Controls.Add(lineBreak);

      input = new TextBox();
      this.Controls.Add(input);
      Button update = new Button();
      update.Text = "Set Label Content";
      update.Click += new EventHandler(this.submit_Click);
      this.Controls.Add(update);
    }

    private void submit_Click(object sender, EventArgs e)
    {
      // Update the label string.
      if (!string.IsNullOrEmpty(input.Text))
      {
        _contentText = input.Text + @"<br />";
        input.Text = String.Empty;
        DisplayContent.Text = this.ContentText;
      }
    }
  }
}

Imports System.Collections
Imports System.ComponentModel
Imports System.Drawing
Imports System.Security.Permissions
Imports System.Web
Imports System.Web.UI
Imports System.Web.UI.WebControls
Imports System.Web.UI.WebControls.WebParts

Namespace Samples.AspNet.VB.Controls

  <AspNetHostingPermission(SecurityAction.Demand, _
    Level:=AspNetHostingPermissionLevel.Minimal)> _
  <AspNetHostingPermission(SecurityAction.InheritanceDemand, _
    Level:=AspNetHostingPermissionLevel.Minimal)> _
  Public Class TextDisplayWebPart
    Inherits WebPart
    Private _contentText As String = Nothing
    Private _fontStyle As String = Nothing
    Private input As TextBox
    Private DisplayContent As Label
    Private lineBreak As Literal

    <Personalizable(), WebBrowsable()> _
    Public Property ContentText() As String
      Get
        Return _contentText
      End Get
      Set(ByVal value As String)
        _contentText = value
      End Set
    End Property

    Protected Overrides Sub CreateChildControls()
      Controls.Clear()
      DisplayContent = New Label()
      DisplayContent.BackColor = Color.LightBlue
      DisplayContent.Text = Me.ContentText
      Me.Controls.Add(DisplayContent)

      lineBreak = New Literal()
      lineBreak.Text = "<br />"
      Controls.Add(lineBreak)

      input = New TextBox()
      Me.Controls.Add(input)
      Dim update As New Button()
      update.Text = "Set Label Content"
      AddHandler update.Click, AddressOf Me.submit_Click
      Me.Controls.Add(update)

    End Sub

    Private Sub submit_Click(ByVal sender As Object, _
                             ByVal e As EventArgs)
      ' Update the label string.
      If input.Text <> String.Empty Then
        _contentText = input.Text + "<br />"
        input.Text = String.Empty
        DisplayContent.Text = Me.ContentText
      End If

    End Sub

  End Class

End Namespace

程式代碼範例的第三個部分是網頁。請注意， <asp:editorzone> 頁面的元素包含三 EditorPart 個控件的宣告。這兩個控件會成為方法執行時Button1_Click所建立之自定義EditorPartCollection物件的一部分。

<%@ page language="c#" %>
<%@ register TagPrefix="uc1" 
  TagName="DisplayModeMenu" 
  Src="DisplayModecs.ascx" %>
<%@ register tagprefix="aspSample" 
  Namespace="Samples.AspNet.CS.Controls" 
  Assembly="TextDisplayWebPartCS" %>
  
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

  protected void Button1_Click(object sender, EventArgs e)
  {
    ArrayList list = new ArrayList(2);
    list.Add(AppearanceEditorPart1);
    list.Add(PropertyGridEditorPart1);
    // Pass an ICollection object to the constructor.
    EditorPartCollection myParts = new EditorPartCollection(list);
    foreach (EditorPart editor in myParts)
    {
      editor.BackColor = System.Drawing.Color.LightBlue;
      editor.Description = "My " + editor.DisplayTitle + " editor.";
    }

    // Use the IndexOf property to locate an EditorPart control.
    int propertyGridPart = myParts.IndexOf(PropertyGridEditorPart1);
    myParts[propertyGridPart].ChromeType = PartChromeType.TitleOnly;

    // Use the Contains method to see if an EditorPart exists.
    if(!myParts.Contains(LayoutEditorPart1))
      LayoutEditorPart1.BackColor = System.Drawing.Color.LightYellow;
    
    // Use the CopyTo method to create an array of EditorParts.
    EditorPart[] partArray = new EditorPart[3];
    partArray[0] = LayoutEditorPart1;
    myParts.CopyTo(partArray,1);
    Label1.Text = "<h3>EditorParts in Custom Array</h3>";
    foreach (EditorPart ePart in partArray)
    {
      Label1.Text += ePart.Title + "<br />";
    }

  }

</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
  <head id="Head1" runat="server">
    <title>
      Text Display WebPart with AppearanceEditorPart
    </title>
  </head>
  <body>
    <form id="form1" runat="server">
      <asp:webpartmanager id="WebPartManager1" runat="server" />
      <uc1:DisplayModeMenu ID="DisplayModeMenu1" runat="server" />
      <asp:webpartzone id="zone1" runat="server">
        <zonetemplate>
          <aspSample:TextDisplayWebPart 
            runat="server"   
            id="textwebpart" 
            title = "Text Content WebPart" />          
        </zonetemplate>
      </asp:webpartzone> 
      <asp:EditorZone ID="EditorZone1" runat="server">
        <ZoneTemplate>
          <asp:AppearanceEditorPart ID="AppearanceEditorPart1" 
            runat="server" />
          <asp:LayoutEditorPart ID="LayoutEditorPart1" 
            runat="server" />
          <asp:PropertyGridEditorPart ID="PropertyGridEditorPart1" 
            runat="server" />
        </ZoneTemplate>      
      </asp:EditorZone>
      <asp:Button ID="Button1" runat="server" 
        Text="Create EditorPartCollection" 
        OnClick="Button1_Click" />
      <asp:Label ID="Label1" runat="server" Text="" />
    </form>
  </body>
</html>

<%@ page language="vb" %>
<%@ register TagPrefix="uc1" 
  TagName="DisplayModeMenu" 
  Src="DisplayModevb.ascx" %>
<%@ register tagprefix="aspSample" 
  Namespace="Samples.AspNet.VB.Controls" 
  Assembly="TextDisplayWebPartVB" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

  Protected Sub Button1_Click(ByVal sender As Object, _
    ByVal e As EventArgs)
    
    Dim list As New ArrayList(2)
    list.Add(AppearanceEditorPart1)
    list.Add(PropertyGridEditorPart1)
    ' Pass an ICollection object to the constructor.
    Dim myParts As New EditorPartCollection(list)
    Dim editor As EditorPart
    For Each editor In myParts
      editor.BackColor = System.Drawing.Color.LightBlue
      editor.Description = "My " + editor.DisplayTitle + " editor."
    Next editor
    
    ' Use the IndexOf property to locate an EditorPart control.
    Dim propertyGridPart As Integer = _
      myParts.IndexOf(PropertyGridEditorPart1)
    myParts(propertyGridPart).ChromeType = PartChromeType.TitleOnly
    
    ' Use the Contains method to see if an EditorPart exists.
    If Not myParts.Contains(LayoutEditorPart1) Then
      LayoutEditorPart1.BackColor = System.Drawing.Color.LightYellow
    End If
    
    ' Use the CopyTo method to create an array of EditorParts.
    Dim partArray(2) As EditorPart
    partArray(0) = LayoutEditorPart1
    myParts.CopyTo(partArray, 1)
    Label1.Text = "<h3>EditorParts in Custom Array</h3>"
    Dim ePart As EditorPart
    For Each ePart In partArray
      Label1.Text += ePart.Title + "<br />"
    Next ePart

  End Sub

</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
  <head id="Head1" runat="server">
    <title>
      Text Display WebPart with AppearanceEditorPart
    </title>
  </head>
  <body>
    <form id="form1" runat="server">
      <asp:webpartmanager id="WebPartManager1" runat="server" />
      <uc1:DisplayModeMenu ID="DisplayModeMenu1" runat="server" />
      <asp:webpartzone id="zone1" runat="server">
        <zonetemplate>
          <aspSample:TextDisplayWebPart 
            runat="server"   
            id="textwebpart" 
            title = "Text Content WebPart" />          
        </zonetemplate>
      </asp:webpartzone> 
      <asp:EditorZone ID="EditorZone1" runat="server">
        <ZoneTemplate>
          <asp:AppearanceEditorPart ID="AppearanceEditorPart1" 
            runat="server" />
          <asp:LayoutEditorPart ID="LayoutEditorPart1" 
            runat="server" />
          <asp:PropertyGridEditorPart ID="PropertyGridEditorPart1" 
            runat="server" />
        </ZoneTemplate>      
      </asp:EditorZone>
      <asp:Button ID="Button1" runat="server" 
        Text="Create EditorPartCollection" 
        OnClick="Button1_Click" />
      <asp:Label ID="Label1" runat="server" Text="" />
    </form>
  </body>
</html>

當您在瀏覽器中載入頁面時，您可以在 [顯示模式] 下拉式清單控制項中選取 [編輯]，將頁面切換為編輯模式。您可以單擊動詞功能表 (控件標題列中 TextDisplayWebPart 的向下箭號) ，然後按兩下 [ 編輯 ] 以編輯控制件。當編輯使用者介面 (UI) 可見時，您可以看到所有 EditorPart 控件。按兩下 [建立編輯器][PartCollection] 按鈕，以查看操作EditorPartCollection物件之程式代碼所建立之控件的效果EditorPart。此外，請注意控件 PropertyGridEditorPart 可讓您編輯自定義 TextDisplayWebPart.ContentText 屬性。這是可行的，因為屬性是以控件原始程式碼中的屬性標記 WebBrowsable 。如果您在編輯 UI 中更新屬性值，則必須將頁面傳回一般流覽模式，以查看更新 TextDisplayWebPart.ContentText 屬性的效果。

備註

類別 EditorPartCollection 是控件的 EditorPart 只讀集合，通常由 EditorZoneBase 區域用來追蹤區域所包含的控件集 EditorPart 。

當網頁元件頁面進入編輯模式，而用戶選取要編輯的控件時，編輯程式就會開始。區域會建立新的 EditorPartCollection 物件，其中包含 EditorPart 區域所包含的控件。在編輯程式的各個階段，區域會存取 EditorPartCollection 物件，以儲存或擷取集合WebPart中控件與目前正在編輯之控件之間的EditorPart屬性值。

例如，如果您需要在一組EditorPart控件上執行一些大量作業，您可以為自己的程序設計用途建立EditorPartCollection控件集合。即使 EditorPartCollection 對像是只讀的，您也可以對集合中所參考之基礎控件的屬性進行程式設計變更。

建構函式

EditorPartCollection()	初始化 EditorPartCollection 類別新的空執行個體。
EditorPartCollection(EditorPartCollection, ICollection)	初始化 EditorPartCollection 類別的新執行個體，方法是傳入 EditorPartCollection 控制項的 EditorPart 集合，以及其他 ICollection 控制項的 EditorPart 集合。
EditorPartCollection(ICollection)	初始化 EditorPartCollection 類別的新執行個體，方法是傳入 ICollection 控制項的 EditorPart 集合。

欄位

Empty

參考集合的靜態、唯讀和空執行個體。

屬性

Count	取得 ReadOnlyCollectionBase 執行個體中包含的元素數目。 (繼承來源 ReadOnlyCollectionBase)
InnerList	取得包含於 ReadOnlyCollectionBase 執行個體中的項目清單。 (繼承來源 ReadOnlyCollectionBase)
Item[Int32]	根據唯一識別項，傳回集合的特定成員。

方法

Contains(EditorPart)	傳回值，指出集合中是否存在特定的控制項。
CopyTo(EditorPart[], Int32)	複製集合至 EditorPart 控制項的陣列。
Equals(Object)	判斷指定的物件是否等於目前的物件。 (繼承來源 Object)
GetEnumerator()	傳回可逐一查看 ReadOnlyCollectionBase 執行個體的列舉值。 (繼承來源 ReadOnlyCollectionBase)
GetHashCode()	做為預設雜湊函式。 (繼承來源 Object)
GetType()	取得目前執行個體的 Type。 (繼承來源 Object)
IndexOf(EditorPart)	傳回集合特定成員的位置。
MemberwiseClone()	建立目前 Object 的淺層複製。 (繼承來源 Object)
ToString()	傳回代表目前物件的字串。 (繼承來源 Object)

明確介面實作

ICollection.CopyTo(Array, Int32)	從目標陣列的指定索引開始，將整個 ReadOnlyCollectionBase 複製到相容的一維 Array。 (繼承來源 ReadOnlyCollectionBase)
ICollection.IsSynchronized	取得值，指出對 ReadOnlyCollectionBase 物件的存取是否為同步的 (執行緒安全)。 (繼承來源 ReadOnlyCollectionBase)
ICollection.SyncRoot	取得可用來同步存取 ReadOnlyCollectionBase 物件的物件。 (繼承來源 ReadOnlyCollectionBase)

擴充方法

Cast<TResult>(IEnumerable)	將 IEnumerable 的項目轉換成指定的型別。
OfType<TResult>(IEnumerable)	根據指定的型別來篩選 IEnumerable 的項目。
AsParallel(IEnumerable)	啟用查詢的平行化作業。
AsQueryable(IEnumerable)	將 IEnumerable 轉換成 IQueryable。

適用於

共用方式為

EditorPartCollection 類別

定義

範例

備註

建構函式

欄位

屬性

方法

明確介面實作

擴充方法

適用於

另請參閱

其他資源