WebPart.ZoneIndex 属性

定义

获取 WebPart 控件在其区域内的索引位置。Gets the index position of a WebPart control within its zone.

public:
 property int ZoneIndex { int get(); };
[System.ComponentModel.Browsable(false)]
public int ZoneIndex { get; }
member this.ZoneIndex : int
Public ReadOnly Property ZoneIndex As Integer

属性值

控件在其区域中的数字顺序。The numerical order of a control within its zone. 区域中的第一个控件的索引值为零。The first control in a zone has an index value of zero.

属性

示例

下面的代码示例演示如何访问自定义 Web 部件控件的 ZoneZoneIndex 属性。The following code example demonstrates how to access the Zone and ZoneIndex properties for a custom Web Parts control. 此示例假设使用在 WebPart 类概述的 "示例" 部分中创建的自定义控件 TextDisplayWebPartThis example assumes the use of a custom control, TextDisplayWebPart, created in the Example section of the WebPart class overview.

此代码示例包含一个自定义用户控件,该控件使用户能够在 Web 部件页上更改显示模式。The code example includes a custom user control that enables users to change display modes on a Web Parts page. 用户控件通过在承载用户控件的网页顶部附近的 Register 指令进行引用。The user control is referenced by means of a Register directive near the top of the Web page that hosts the user control. 有关如何创建此用户控件并使用显示模式的详细说明,请参阅演练:开发和使用自定义 Web 服务器控件For a detailed description of how to create this user control and work with display modes, see Walkthrough: Developing and Using a Custom Web Server Control.

<%@ 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);
      }
    }

    // If shared scope is allowed for this user, display the scope-switching
    // UI and select the appropriate radio button for the current user scope.
    if (_manager.Personalization.CanEnterSharedScope)
    {
      Panel2.Visible = true;
      if (_manager.Personalization.Scope == PersonalizationScope.User)
        RadioButton1.Checked = true;
      else
        RadioButton2.Checked = true;
    }
    
  }
 
  // 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;
  }

  // Set the selected item equal to the current display mode.
  void Page_PreRender(object sender, EventArgs e)
  {
    ListItemCollection items = DisplayModeDropdown.Items;
    int selectedIndex = 
      items.IndexOf(items.FindByText(_manager.DisplayMode.Name));
    DisplayModeDropdown.SelectedIndex = selectedIndex;
  }

  // Reset all of a user's personalization data for the page.
  protected void LinkButton1_Click(object sender, EventArgs e)
  {
    _manager.Personalization.ResetPersonalizationState();
  }

  // If not in User personalization scope, toggle into it.
  protected void RadioButton1_CheckedChanged(object sender, EventArgs e)
  {
    if (_manager.Personalization.Scope == PersonalizationScope.Shared)
      _manager.Personalization.ToggleScope();
  }

  // If not in Shared scope, and if user is allowed, toggle the scope.
  protected void RadioButton2_CheckedChanged(object sender, EventArgs e)
  {
    if (_manager.Personalization.CanEnterSharedScope && 
        _manager.Personalization.Scope == PersonalizationScope.User)
      _manager.Personalization.ToggleScope();
  }
</script>
<div>
  <asp:Panel ID="Panel1" runat="server" 
    Borderwidth="1" 
    Width="230" 
    BackColor="lightgray"
    Font-Names="Verdana, Arial, Sans Serif" >
    <asp:Label ID="Label1" runat="server" 
      Text="&nbsp;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:LinkButton ID="LinkButton1" runat="server"
      Text="Reset User State" 
      ToolTip="Reset the current user's personalization data for the page."
      Font-Size="8" 
      OnClick="LinkButton1_Click" />
    <asp:Panel ID="Panel2" runat="server" 
      GroupingText="Personalization Scope"
      Font-Bold="true"
      Font-Size="8" 
      Visible="false" >
      <asp:RadioButton ID="RadioButton1" runat="server" 
        Text="User" 
        AutoPostBack="true"
        GroupName="Scope" OnCheckedChanged="RadioButton1_CheckedChanged" />
      <asp:RadioButton ID="RadioButton2" runat="server" 
        Text="Shared" 
        AutoPostBack="true"
        GroupName="Scope" 
        OnCheckedChanged="RadioButton2_CheckedChanged" />
    </asp:Panel>
  </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
      
    ' If shared scope is allowed for this user, display the scope-switching
    ' UI and select the appropriate radio button for the current user scope.
    If _manager.Personalization.CanEnterSharedScope Then
      Panel2.Visible = True
      If _manager.Personalization.Scope = PersonalizationScope.User Then
        RadioButton1.Checked = True
      Else
        RadioButton2.Checked = True
      End If
    End If
   
  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
   
  ' Set the selected item equal to the current display mode.
  Sub Page_PreRender(ByVal sender As Object, ByVal e As EventArgs)
    Dim items As ListItemCollection = DisplayModeDropdown.Items
    Dim selectedIndex As Integer = _
      items.IndexOf(items.FindByText(_manager.DisplayMode.Name))
    DisplayModeDropdown.SelectedIndex = selectedIndex

  End Sub

  ' Reset all of a user's personalization data for the page.
  Protected Sub LinkButton1_Click(ByVal sender As Object, _
    ByVal e As EventArgs)
    
    _manager.Personalization.ResetPersonalizationState()
    
  End Sub

  ' If not in User personalization scope, toggle into it.
  Protected Sub RadioButton1_CheckedChanged(ByVal sender As Object, _
    ByVal e As EventArgs)
    
    If _manager.Personalization.Scope = PersonalizationScope.Shared Then
      _manager.Personalization.ToggleScope()
    End If

  End Sub
   
  ' If not in Shared scope, and if user is allowed, toggle the scope.
  Protected Sub RadioButton2_CheckedChanged(ByVal sender As Object, _
    ByVal e As EventArgs)
    
    If _manager.Personalization.CanEnterSharedScope AndAlso _
      _manager.Personalization.Scope = PersonalizationScope.User Then
      _manager.Personalization.ToggleScope()
    End If

  End Sub

</script>
<div>
  <asp:Panel ID="Panel1" runat="server" 
    Borderwidth="1" 
    Width="230" 
    BackColor="lightgray"
    Font-Names="Verdana, Arial, Sans Serif" >
    <asp:Label ID="Label1" runat="server" 
      Text="&nbsp;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:LinkButton ID="LinkButton1" runat="server"
      Text="Reset User State" 
      ToolTip="Reset the current user's personalization data for the page."
      Font-Size="8" 
      OnClick="LinkButton1_Click" />
    <asp:Panel ID="Panel2" runat="server" 
      GroupingText="Personalization Scope"
      Font-Bold="true"
      Font-Size="8" 
      Visible="false" >
      <asp:RadioButton ID="RadioButton1" runat="server" 
        Text="User" 
        AutoPostBack="true"
        GroupName="Scope" OnCheckedChanged="RadioButton1_CheckedChanged" />
      <asp:RadioButton ID="RadioButton2" runat="server" 
        Text="Shared" 
        AutoPostBack="true"
        GroupName="Scope" 
        OnCheckedChanged="RadioButton2_CheckedChanged" />
    </asp:Panel>
  </asp:Panel>
</div>

此代码示例的第二部分是网页。The second part of the code example is the Web page. 页面上有两个 <asp:webpartzone> 元素,每个元素表示一个 Web 部件区域。There are two <asp:webpartzone> elements on the page, each representing a Web Parts zone. 第一个区域包含标准 Calendar 控件,该控件在运行时像 WebPart 控件,因为它位于区域中。The first zone contains a standard Calendar control, which acts like a WebPart control at run time because it is in a zone. 第二个区域包含 TextDisplayWebPart 控件。The second zone contains the TextDisplayWebPart control. 当用户单击 "区域信息" 按钮时,Label1 控件将显示控件的 ZoneIndex 属性的值,以及当前包含控件的区域的 ID 属性。When a user clicks the Zone Information button, the Label1 control displays the values of the ZoneIndex property for the control, and the ID property of the zone that currently contains the control.

<%@ page language="C#" %>
<%@ register TagPrefix="uc1" 
  TagName="DisplayModeMenuCS" 
  Src="DisplayModeMenuCS.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">
  String labelText = @"<p><strong>Text WebPart " +
                     "Zone Information</strong></p>";

  void Button1_Click(object sender, EventArgs e)
  {
    // Get the zone for the Web Parts control.
    WebPartZoneBase theZone = textpart1.Zone;
    Label1.Text = labelText +
                  "Zone ID:  " + theZone.ID +
                  @"<br />" +
                  "Zone Index:  " +
                  textpart1.ZoneIndex.ToString();
    // Change the type of button for the verb.
    theZone.VerbButtonType = ButtonType.Button;
  }
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
    <title>ASP.NET Example</title>
</head>
<body>
  <form id="Form1" runat="server">
    <asp:webpartmanager id="WebPartManager1" runat="server" />
    <uc1:DisplayModeMenuCS ID="DisplayModeMenu1" runat="server" />
    <asp:webpartzone
      id="WebPartZone1"
      runat="server"
      title="Zone 1"
      PartChromeType="TitleAndBorder">
        <parttitlestyle font-bold="true" ForeColor="#3300cc" />
        <partstyle
          borderwidth="1px"   
          borderstyle="Solid"  
          bordercolor="#81AAF2" />
        <zonetemplate>
          <asp:Calendar ID="cal1" Runat="server" />
        </zonetemplate>
    </asp:webpartzone>
    <asp:webpartzone
      id="WebPartZone2"
      runat="server"
      title="Zone 2"
      PartChromeType="TitleAndBorder">
        <parttitlestyle font-bold="true" ForeColor="#3300cc" />
        <partstyle
          borderwidth="1px"   
          borderstyle="Solid"  
          bordercolor="#81AAF2" />
        <zonetemplate>
          <aspSample:textdisplaywebpart 
            id="textpart1" 
            runat="server" 
            Title="Text WebPart" />
        </zonetemplate>
    </asp:webpartzone>
    <asp:Button ID="Button1" 
      Runat="server" 
      Text="Zone Information" 
      OnClick="Button1_Click" />
    <br />
    <asp:Label ID="Label1" runat="server" />
  </form>
</body>
</html>
<%@ page language="VB" %>
<%@ register TagPrefix="uc1" 
  TagName="DisplayModeMenuVB" 
  Src="DisplayModeMenuVB.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">

  Dim labelText As String = _
    "<p><strong>Text WebPart " _
    + "Zone Information</strong></p>"

  Sub Button1_Click(ByVal sender As Object, _
                    ByVal e As EventArgs)
    ' Get the zone for the Web Parts control.
    Dim theZone As WebPartZoneBase = textpart1.Zone
    Label1.Text = labelText + "Zone ID:  " _
      + theZone.ID + "<br />" _
      + "Zone Index:  " _
      + textpart1.ZoneIndex.ToString()
    ' Change the type of button for the verb.
    theZone.VerbButtonType = ButtonType.Button
  End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
    <title>ASP.NET Example</title>
</head>
<body>
  <form id="Form1" runat="server">
    <asp:webpartmanager id="WebPartManager1" runat="server" />
    <uc1:DisplayModeMenuVB ID="DisplayModeMenu1" runat="server" />
    <asp:webpartzone
      id="WebPartZone1"
      runat="server"
      title="Zone 1"
      PartChromeType="TitleAndBorder">
        <parttitlestyle font-bold="true" ForeColor="#3300cc" />
        <partstyle
          borderwidth="1px"   
          borderstyle="Solid"  
          bordercolor="#81AAF2" />
        <zonetemplate>
          <asp:Calendar ID="cal1" Runat="server" />
        </zonetemplate>
    </asp:webpartzone>
    <asp:webpartzone
      id="WebPartZone2"
      runat="server"
      title="Zone 2"
      PartChromeType="TitleAndBorder">
        <parttitlestyle font-bold="true" ForeColor="#3300cc" />
        <partstyle
          borderwidth="1px"   
          borderstyle="Solid"  
          bordercolor="#81AAF2" />
        <zonetemplate>
          <aspSample:textdisplaywebpart 
            id="textpart1" 
            runat="server" 
            Title="Text WebPart" />
        </zonetemplate>
    </asp:webpartzone>
    <asp:Button ID="Button1" 
      Runat="server" 
      Text="Zone Information" 
      OnClick="Button1_Click" />
    <br />
    <asp:Label ID="Label1" runat="server" />
  </form>
</body>
</html>

注解

ZoneIndex 属性表示 Web 部件控件在其区域中相对于该区域中其他控件的数值顺序(或序号位置)。The ZoneIndex property indicates a Web Parts control's numerical order (or ordinal position) within its zone, relative to other controls in the zone. WebPartManager 控件使用此属性在网页上跟踪和管理其 Web 部件控件的集合。The WebPartManager control uses this property to track and manage its collection of Web Parts controls on a Web page.

重要

不能假定控件的 ZoneIndex 属性的值将等于控件区域的 WebParts 集合内相同控件的索引值。You cannot assume that the value of the ZoneIndex property for a control will equal the index value for the same control within the WebParts collection of the control's zone. 控件在其区域中的相对位置(其 ZoneIndex 值)和其在其区域的 WebParts 集合内的索引通常是不同的值。Often a control's relative position in its zone (its ZoneIndex value), and its index within the WebParts collection of its zone, will be different values as controls are added to and removed from zones.

适用于

另请参阅