WebPart.ZoneIndex Properti

Definisi

Ruang nama:

System.Web.UI.WebControls.WebParts

Rakitan:

System.Web.dll

Mendapatkan posisi WebPart indeks kontrol dalam zonanya.

public:
 property int ZoneIndex { int get(); };

[System.ComponentModel.Browsable(false)]
public int ZoneIndex { get; }

[<System.ComponentModel.Browsable(false)>]
member this.ZoneIndex : int

Public ReadOnly Property ZoneIndex As Integer

Nilai Properti

Int32

Urutan numerik kontrol dalam zonanya. Kontrol pertama dalam zona memiliki nilai indeks nol.

Atribut

BrowsableAttribute

Contoh

Contoh kode berikut menunjukkan cara mengakses Zone properti dan ZoneIndex untuk kontrol Komponen Web kustom. Contoh ini mengasumsikan penggunaan kontrol kustom, TextDisplayWebPart, dibuat di bagian Contoh dari WebPart gambaran umum kelas.

Contoh kode menyertakan kontrol pengguna kustom yang memungkinkan pengguna mengubah mode tampilan pada halaman Komponen Web. Kontrol pengguna direferensikan dengan arahan Register di dekat bagian atas halaman Web yang menghosting kontrol pengguna. Untuk deskripsi terperinci tentang cara membuat kontrol pengguna ini dan bekerja dengan mode tampilan, lihat Panduan: Mengembangkan dan Menggunakan Kontrol Server Web Kustom.

<%@ 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=" 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=" 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>

Bagian kedua dari contoh kode adalah halaman Web. Ada dua <asp:webpartzone> elemen di halaman, masing-masing mewakili zona Bagian Web. Zona pertama berisi kontrol standar Calendar , yang bertindak seperti WebPart kontrol pada durasi karena berada di zona. Zona kedua berisi TextDisplayWebPart kontrol. Saat pengguna mengklik tombol Informasi Zona , Label1 kontrol menampilkan nilai ZoneIndex properti untuk kontrol, dan ID properti zona yang saat ini berisi kontrol.

<%@ 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>

Keterangan

Properti ZoneIndex menunjukkan urutan numerik kontrol Bagian Web (atau posisi ordinal) dalam zonanya, relatif terhadap kontrol lain di zona tersebut. Kontrol WebPartManager ini menggunakan properti ini untuk melacak dan mengelola kumpulan kontrol Komponen Web pada halaman Web.

Penting

Anda tidak dapat berasumsi bahwa nilai ZoneIndex properti untuk kontrol akan sama dengan nilai indeks untuk kontrol yang sama dalam WebParts kumpulan zona kontrol. Seringkali posisi relatif kontrol di zonanya (nilainya ZoneIndex ), dan indeksnya dalam WebParts kumpulan zonanya, akan menjadi nilai yang berbeda karena kontrol ditambahkan ke dan dihapus dari zona.

Lihat juga

• WebZone
• WebPartZone
• WebPartZoneBase
• ASP.NET Kontrol Komponen Web