WebPartConnection.ProviderConnectionPoint Properti

Definisi

Ruang nama:

System.Web.UI.WebControls.WebParts

Rakitan:

System.Web.dll

Mendapatkan objek yang berfungsi sebagai titik koneksi untuk kontrol yang WebPart bertindak sebagai penyedia untuk koneksi.

public:
 property System::Web::UI::WebControls::WebParts::ProviderConnectionPoint ^ ProviderConnectionPoint { System::Web::UI::WebControls::WebParts::ProviderConnectionPoint ^ get(); };

[System.ComponentModel.Browsable(false)]
public System.Web.UI.WebControls.WebParts.ProviderConnectionPoint ProviderConnectionPoint { get; }

[<System.ComponentModel.Browsable(false)>]
member this.ProviderConnectionPoint : System.Web.UI.WebControls.WebParts.ProviderConnectionPoint

Public ReadOnly Property ProviderConnectionPoint As ProviderConnectionPoint

Nilai Properti

ProviderConnectionPoint

Yang ProviderConnectionPoint terkait dengan kontrol penyedia dalam koneksi.

Atribut

BrowsableAttribute

Contoh

Contoh kode berikut menunjukkan penggunaan terprogram properti ProviderConnectionPoint .

Contohnya memiliki empat bagian:

• Kontrol pengguna yang memungkinkan Anda mengubah mode tampilan Komponen Web pada halaman.

• Kode sumber untuk antarmuka dan dua WebPart kontrol yang bertindak sebagai penyedia dan konsumen untuk koneksi.

• Halaman Web untuk menghosting semua kontrol dan menjalankan contoh kode.

• Penjelasan tentang cara menjalankan halaman contoh.

Bagian pertama dari contoh kode ini adalah kontrol pengguna yang memungkinkan pengguna mengubah mode tampilan pada halaman Web. Simpan kode sumber berikut ke file .ascx, berikan nama file yang ditetapkan ke Src atribut Register direktif untuk kontrol pengguna ini, yang berada di dekat bagian atas halaman Web hosting. Untuk detail tentang mode tampilan dan deskripsi kode sumber dalam kontrol ini, lihat Panduan: Mengubah Mode Tampilan pada Halaman Bagian Web.

<%@ 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 kode sumber untuk dua WebPart kontrol yang berfungsi sebagai konsumen dan penyedia untuk koneksi, dan antarmuka yang digunakan untuk titik koneksi. Agar contoh kode berjalan, Anda harus mengkompilasi kode sumber ini. Anda dapat mengkompilasinya secara eksplisit dan meletakkan rakitan yang dihasilkan di folder Bin situs Web Anda atau cache perakitan global. Atau, Anda dapat meletakkan kode sumber di folder App_Code situs Anda, di mana kode tersebut akan dikompilasi secara dinamis pada durasi. Contoh kode ini menggunakan kompilasi dinamis. Untuk panduan yang menunjukkan cara mengkompilasi, lihat Panduan: Mengembangkan dan Menggunakan Kontrol Server Web Kustom.

namespace Samples.AspNet.CS.Controls
{
  using System;
  using System.Web;
  using System.Web.Security;
  using System.Security.Permissions;
  using System.Web.UI;
  using System.Web.UI.WebControls;
  using System.Web.UI.WebControls.WebParts;

  [AspNetHostingPermission(SecurityAction.Demand,
    Level = AspNetHostingPermissionLevel.Minimal)]
  [AspNetHostingPermission(SecurityAction.InheritanceDemand,
    Level = AspNetHostingPermissionLevel.Minimal)]
  public interface IZipCode
  {
    string ZipCode { get; set;}
  }

  [AspNetHostingPermission(SecurityAction.Demand,
    Level = AspNetHostingPermissionLevel.Minimal)]
  [AspNetHostingPermission(SecurityAction.InheritanceDemand,
    Level = AspNetHostingPermissionLevel.Minimal)]
  public class ZipCodeWebPart : WebPart, IZipCode
  {
    string zipCodeText = String.Empty;
    TextBox input;
    Button send;

    public ZipCodeWebPart()
    {
    }

    // Make the implemented property personalizable to save 
    // the Zip Code between browser sessions.
    [Personalizable()]
    public virtual string ZipCode
    {
      get { return zipCodeText; }
      set { zipCodeText = value; }
    }

    // This is the callback method that returns the provider.
    [ConnectionProvider("Zip Code Provider", "ZipCodeProvider")]
    public IZipCode ProvideIZipCode()
    {
      return this;
    }

    protected override void CreateChildControls()
    {
      Controls.Clear();
      input = new TextBox();
      this.Controls.Add(input);
      send = new Button();
      send.Text = "Enter 5-digit Zip Code";
      send.Click += new EventHandler(this.submit_Click);
      this.Controls.Add(send);
    }

    private void submit_Click(object sender, EventArgs e)
    {
      if (!string.IsNullOrEmpty(input.Text))
      {
        zipCodeText = Page.Server.HtmlEncode(input.Text);
        input.Text = String.Empty;
      }
    }
  }

  [AspNetHostingPermission(SecurityAction.Demand,
    Level = AspNetHostingPermissionLevel.Minimal)]
  [AspNetHostingPermission(SecurityAction.InheritanceDemand,
    Level = AspNetHostingPermissionLevel.Minimal)]
  public class WeatherWebPart : WebPart
  {
    private IZipCode _provider;
    string _zipSearch;
    Label DisplayContent;

    // This method is identified by the ConnectionConsumer 
    // attribute, and is the mechanism for connecting with 
    // the provider. 
    [ConnectionConsumer("Zip Code Consumer", "ZipCodeConsumer")]
    public void GetIZipCode(IZipCode Provider)
    {
      _provider = Provider;
    }
    
    protected override void OnPreRender(EventArgs e)
    {
      EnsureChildControls();

      if (this._provider != null)
      {
        _zipSearch = _provider.ZipCode.Trim();
        DisplayContent.Text = "My Zip Code is:  " + _zipSearch;
      }
    }

    protected override void CreateChildControls()
    {
      Controls.Clear();
      DisplayContent = new Label();
      this.Controls.Add(DisplayContent);
    }
  }
}

Imports System.Web
Imports System.Web.Security
Imports System.Security.Permissions
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 Interface IZipCode

    Property ZipCode() As String

  End Interface

  <AspNetHostingPermission(SecurityAction.Demand, _
    Level:=AspNetHostingPermissionLevel.Minimal)> _
  <AspNetHostingPermission(SecurityAction.InheritanceDemand, _
    Level:=AspNetHostingPermissionLevel.Minimal)> _
  Public Class ZipCodeWebPart
    Inherits WebPart
    Implements IZipCode
    Private zipCodeText As String = String.Empty
    Private input As TextBox
    Private send As Button

    Public Sub New()
    End Sub

    ' Make the implemented property personalizable to save 
    ' the Zip Code between browser sessions.
    <Personalizable()> _
    Public Property ZipCode() As String _
      Implements IZipCode.ZipCode

      Get
        Return zipCodeText
      End Get
      Set(ByVal value As String)
        zipCodeText = value
      End Set
    End Property

    ' This is the callback method that returns the provider.
    <ConnectionProvider("Zip Code Provider", "ZipCodeProvider")> _
    Public Function ProvideIZipCode() As IZipCode
      Return Me
    End Function


    Protected Overrides Sub CreateChildControls()
      Controls.Clear()
      input = New TextBox()
      Me.Controls.Add(input)
      send = New Button()
      send.Text = "Enter 5-digit Zip Code"
      AddHandler send.Click, AddressOf Me.submit_Click
      Me.Controls.Add(send)

    End Sub


    Private Sub submit_Click(ByVal sender As Object, _
      ByVal e As EventArgs)

      If input.Text <> String.Empty Then
        zipCodeText = Page.Server.HtmlEncode(input.Text)
        input.Text = String.Empty
      End If

    End Sub

  End Class

  <AspNetHostingPermission(SecurityAction.Demand, _
    Level:=AspNetHostingPermissionLevel.Minimal)> _
  <AspNetHostingPermission(SecurityAction.InheritanceDemand, _
    Level:=AspNetHostingPermissionLevel.Minimal)> _
  Public Class WeatherWebPart
    Inherits WebPart
    Private _provider As IZipCode
    Private _zipSearch As String
    Private DisplayContent As Label

    ' This method is identified by the ConnectionConsumer 
    ' attribute, and is the mechanism for connecting with 
    ' the provider. 
    <ConnectionConsumer("Zip Code Consumer", "ZipCodeConsumer")> _
    Public Sub GetIZipCode(ByVal Provider As IZipCode)
      _provider = Provider
    End Sub


    Protected Overrides Sub OnPreRender(ByVal e As EventArgs)
      EnsureChildControls()

      If Not (Me._provider Is Nothing) Then
        _zipSearch = _provider.ZipCode.Trim()
                DisplayContent.Text = "My Zip Code is:  " + _zipSearch
      End If

    End Sub

    Protected Overrides Sub CreateChildControls()
      Controls.Clear()
      DisplayContent = New Label()
      Me.Controls.Add(DisplayContent)

    End Sub

  End Class

End Namespace

Bagian ketiga dari contoh kode adalah kode untuk halaman Web yang menghosting kontrol dan menunjukkan penggunaan ProviderConnectionPoint properti . Dalam metode , Button1_Click semua objek yang diperlukan untuk membentuk koneksi dibuat, termasuk ProviderConnectionPoint objek . Perhatikan panggilan ke GetProviderConnectionPoints metode pada WebPartManager kontrol. Berbagai objek yang dibuat semuanya diteruskan ke ConnectWebParts metode untuk membuat koneksi. Dalam metode , Button2_Click kode mengakses ProviderConnectionPoint properti dan menampilkan beberapa detail titik koneksi.

<%@ Page Language="C#" %>
<%@ Register TagPrefix="uc1" 
    TagName="DisplayModeMenuCS"
    Src="~/displaymodemenucs.ascx" %>
<%@ Register TagPrefix="aspSample" 
    Namespace="Samples.AspNet.CS.Controls" %>

<!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)
  {
    ProviderConnectionPoint provPoint = 
      mgr.GetProviderConnectionPoints(zip1)["ZipCodeProvider"];
    ConsumerConnectionPoint connPoint = 
      mgr.GetConsumerConnectionPoints(weather1)["ZipCodeConsumer"];
    WebPartConnection conn1 = mgr.ConnectWebParts(zip1, provPoint,
      weather1, connPoint);
  }

  protected void Button2_Click(object sender, EventArgs e)
  {  
    ProviderConnectionPoint connpoint = 
      mgr.Connections[0].ProviderConnectionPoint;
    lbl2.Text = "<h3>Provider Connection Points Details</h3>" +
      "Display name: " + connpoint.DisplayName +
      "<br />" +
      "Control type: " + connpoint.ControlType.FullName +
      "<br />" +
      "Connection Point ID: " + connpoint.ID +
      "<br />" +
      "Interface type: " + connpoint.InterfaceType.ToString();
  }

  protected void mgr_DisplayModeChanged(object sender, 
    WebPartDisplayModeEventArgs e)
  {
    if (mgr.DisplayMode == WebPartManager.ConnectDisplayMode)
    {
      Button1.Visible = true;
      Button2.Visible = true;
    }
    else
    {
      Button1.Visible = false;
      Button2.Visible = false;
    }
  }
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
      <asp:WebPartManager ID="mgr" runat="server" 
    OnDisplayModeChanged="mgr_DisplayModeChanged" />
      <uc1:DisplayModeMenuCS ID="menu1" runat="server" />
      <asp:WebPartZone ID="WebPartZone1" runat="server">
        <ZoneTemplate>
          <aspSample:ZipCodeWebPart ID="zip1" runat="server"
            Title="Zip Code Provider" />
          <aspSample:WeatherWebPart ID="weather1" runat="server" 
            Title="Zip Code Consumer" />
        </ZoneTemplate>
      </asp:WebPartZone>
      <asp:ConnectionsZone ID="ConnectionsZone1" runat="server">
      </asp:ConnectionsZone>
      <asp:Button ID="Button1" runat="server" 
        Text="Connect WebPart Controls" 
        OnClick="Button1_Click" 
    Visible="false" />
      <br />
      <asp:Button ID="Button2" runat="server" 
        Text="ConnectionPoint Details" 
        OnClick="Button2_Click" 
        Visible="false" /> 
      <br />   
      <asp:Label ID="lbl2" runat="server" />
    </div>
    </form>
</body>
</html>

<%@ Page Language="vb" %>
<%@ Register TagPrefix="uc1" 
    TagName="DisplayModeMenuVB"
    Src="~/displaymodemenuvb.ascx" %>
<%@ Register TagPrefix="aspSample" 
    Namespace="Samples.AspNet.VB.Controls" %>

<!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 System.EventArgs)
    
    Dim provPoint As ProviderConnectionPoint = _
      mgr.GetProviderConnectionPoints(zip1)("ZipCodeProvider")
    Dim connPoint As ConsumerConnectionPoint = _
      mgr.GetConsumerConnectionPoints(weather1)("ZipCodeConsumer")
    mgr.ConnectWebParts(zip1, provPoint, weather1, connPoint)

  End Sub

  Protected Sub Button2_Click(ByVal sender As Object, _
    ByVal e As System.EventArgs)
    
    Dim connpoint As ProviderConnectionPoint = _
      mgr.Connections(0).ProviderConnectionPoint

    lbl2.Text = "<h3>Provider Connection Points Details</h3>" & _
      "Display name: " & connpoint.DisplayName & _
      "<br />" & _
      "Control type: " & connpoint.ControlType.FullName & _
      "<br />" & _
      "Connection Point ID: " & connpoint.ID & _
      "<br />" & _
      "Interface type: " & connpoint.InterfaceType.ToString()
  End Sub

  Protected Sub mgr_DisplayModeChanged (ByVal sender as Object, _
    ByVal e as WebPartDisplayModeEventArgs)

    If mgr.DisplayMode Is WebPartManager.ConnectDisplayMode Then
      Button1.Visible = True
      Button2.Visible = True
    Else
      Button1.Visible = False
      Button2.Visible = False
    End If

  End Sub
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
      <asp:WebPartManager ID="mgr" runat="server"
    OnDisplayModeChanged="mgr_DisplayModeChanged" />
      <uc1:DisplayModeMenuVB ID="menu1" runat="server" />
      <asp:WebPartZone ID="WebPartZone1" runat="server">
        <ZoneTemplate>
          <aspSample:ZipCodeWebPart ID="zip1" runat="server"
            Title="Zip Code Provider" />
          <aspSample:WeatherWebPart ID="weather1" runat="server" 
            Title="Zip Code Consumer" />
        </ZoneTemplate>
      </asp:WebPartZone>
      <asp:ConnectionsZone ID="ConnectionsZone1" runat="server">
      </asp:ConnectionsZone>
      <asp:Button ID="Button1" runat="server" 
        Text="Connect WebPart Controls" 
        OnClick="Button1_Click" 
    Visible="false" />
      <br />
      <asp:Button ID="Button2" runat="server" 
        Text="ConnectionPoint Details" 
        OnClick="Button2_Click" 
        Visible="false" /> 
      <br />   
      <asp:Label ID="lbl2" runat="server" />
    </div>
    </form>
</body>
</html>

Setelah Anda memuat halaman di browser, gunakan kontrol daftar drop-down Mode Tampilan untuk mengalihkan halaman ke mode sambungkan. Klik menu kata kerja (diwakili oleh panah ke bawah di bilah judul) pada salah WebPart satu kontrol, dan klik kata kerja sambungkan. Gunakan tombol Sambungkan Kontrol WebPart , atau UI koneksi yang disediakan, untuk membuat koneksi di antara kedua kontrol. Klik tombol Detail ConnectionPoint untuk menjalankan kode yang menunjukkan ProviderConnectionPoint properti.

Keterangan

Salah satu langkah yang diperlukan untuk membuat koneksi di antara dua WebPart kontrol adalah membuat titik koneksi untuk setiap kontrol. Titik koneksi penyedia adalah objek yang berisi informasi tentang cara menyambungkan ke kontrol yang bertindak sebagai penyedia. Dalam kode sumber penyedia, salah satu metode harus diidentifikasi dengan ConnectionProvider atribut . ProviderConnectionPoint yang terkait dengan kontrol penyedia berisi detail tentang metode dan atribut , termasuk ID untuk metode , nama tampilan untuk digunakan dalam antarmuka pengguna (UI), dan jenis instans antarmuka apa yang dapat kembali ke kontrol konsumen. Kumpulan informasi tentang penyedia ini, metodenya untuk membentuk koneksi, dan jenis antarmuka yang disediakannya, secara kolektif membentuk titik koneksi penyedia.

Secara default, ConsumerConnectionPoint hanya dapat tersambung ke satu ProviderConnectionPoint objek pada satu waktu. Konsumen dapat memiliki beberapa metode yang diidentifikasi sebagai titik koneksi konsumen yang mungkin, tetapi konsumen hanya dapat berpartisipasi dalam satu koneksi sebagai konsumen (karenanya, hanya salah satu titik koneksi konsumennya yang dapat aktif) pada satu waktu. Sebaliknya, ProviderConnectionPoint dapat tersambung ke sejumlah ConsumerConnectionPoint objek secara default. Misalnya, kontrol penyedia yang menyediakan kode pos dapat dihubungkan ke beberapa kontrol konsumen yang menggunakan kode pos untuk membuat berbagai jenis data berdasarkan kode pos, seperti data cuaca, berita, dan sebagainya. Perilaku default ini dapat diubah dengan mengganti AllowsMultipleConnections properti pada ConnectionProviderAttribute atribut .

Lihat juga

• ConnectionProviderAttribute
• ProviderConnectionPoint
• GetProviderConnectionPoints(WebPart)
• ASP.NET Kontrol Komponen Web