WebPartConnection.ConsumerID 屬性
定義
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。
取得或設定連接上的屬性值,這個屬性會參考做為此連接之消費者 WebPart 控制項的 ID。
public:
property System::String ^ ConsumerID { System::String ^ get(); void set(System::String ^ value); };
public string ConsumerID { get; set; }
member this.ConsumerID : string with get, set
Public Property ConsumerID As String
屬性值
字串,包含做為連接之中消費者控制項的 ID。
範例
下列程式代碼範例示範 屬性的 ConsumerID 宣告式和程序設計用法。
此範例有四個部分:
使用者控制元件,可讓您變更頁面上的網頁元件顯示模式。
介面的原始程式碼,以及 WebPart 兩個做為連接提供者和取用者的控件。
裝載所有控制項並執行程式碼範例的網頁。
如何執行範例頁面的說明。
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。 將下列原始程式碼儲存至 .ascx 檔案,為其提供指派給 Src
這個使用者控件之 指示詞之 屬性的 Register
檔名,其位於主控網頁頂端附近。 如需此控件中顯示模式和原始碼描述的詳細資訊,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);
}
}
// 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>
程式代碼範例的第二個部分是 介面的原始程式碼,以及取用者和提供者控件。 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,您可以將原始程式碼放在月臺的 App_Code資料夾中,其將在運行時間動態編譯。 此程式代碼範例會使用動態編譯。 如需示範如何編譯的逐步解說,請參閱逐步解說 :開發和使用自定義 Web 伺服器控制件。
namespace Samples.AspNet.CS.Controls
{
using System;
using System.Web;
using System.Web.Security;
using System.Security.Permissions;
using System.Web.UI;
using System.Xml;
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
程式代碼範例的第三個部分是網頁。 請注意,使用 <StaticConnections>
和 <asp:WebPartsConnection>
元素在頁面標記中宣告連接。 連接宣告包含必要 ConsumerID
屬性。 建立連接的第二個方法會出現在方法中 Button1_Click
,其中程式代碼會使用取用者控件中定義的連接點來建立新的連接。 然後,在方法中 Button2_Click
,程式代碼會存取 屬性的值, ConsumerID 並將其顯示在標籤中。
<%@ 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)
{
WebPartConnection conn = mgr.Connections[0];
lbl2.Text = "<h3>Consumer Details</h3>" +
"Consumer title: " + conn.Consumer.Title +
"<br />" +
"Consumer ID: " + conn.ConsumerID;
}
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">
<StaticConnections>
<asp:WebPartConnection ID="conn1"
ConsumerConnectionPointID="ZipCodeConsumer"
ConsumerID="weather1"
ProviderConnectionPointID="ZipCodeProvider"
ProviderID="zip1" />
</StaticConnections>
</asp:WebPartManager>
<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="Consumer 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 conn as WebPartConnection = mgr.Connections(0)
lbl2.Text = "<h3>Consumer Details</h3>" & _
"Consumer title: " & conn.Consumer.Title & _
"<br />" & _
"Consumer ID: " & conn.ConsumerID
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 id="Head1" runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:WebPartManager ID="mgr" runat="server" OnDisplayModeChanged="mgr_DisplayModeChanged">
<StaticConnections>
<asp:WebPartConnection ID="conn1"
ConsumerConnectionPointID="ZipCodeConsumer"
ConsumerID="weather1"
ProviderConnectionPointID="ZipCodeProvider"
ProviderID="zip1" />
</StaticConnections>
</asp:WebPartManager>
<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="Consumer Details"
OnClick="Button2_Click"
Visible="false" />
<br />
<asp:Label ID="lbl2" runat="server" />
</div>
</form>
</body>
</html>
在瀏覽器中載入頁面之後,因為頁面所宣告的靜態連線,所以已有連線存在。 在提供者控件中輸入一些文字,並請注意,由於連接,它會顯示在取用者中。 接下來,中斷控件的連接。 使用 [ 顯示模式 ] 下拉式清單控件,將頁面切換為 [連線模式]。 單擊標題列中的向下箭號所代表 (的動詞功能表) 其中一個 WebPart 控件,然後按兩下連接動詞命令。 按兩下 [ 中斷連線 ] 按鈕。 使用 [連接 WebPart 控制件] 按鈕,重新建立兩個控件之間的連線。 按兩下 [ 取用者詳細資料] 按鈕,以執行存取屬性值的程式 ConsumerID 代碼。
備註
ConsumerID當您在控件之間建立WebPart連接時,需要屬性值。 如果未將值指派給 屬性,當控件嘗試啟動連接時 WebPartManager ,就會擲回例外狀況。
適用於
另請參閱
意見反應
https://aka.ms/ContentUserFeedback。
即將登場:在 2024 年,我們將逐步淘汰 GitHub 問題作為內容的意見反應機制,並將它取代為新的意見反應系統。 如需詳細資訊,請參閱:提交並檢視相關的意見反應