IWebActionable 介面

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。

讓 WebPart 控制項或其他伺服器控制項能夠容納動詞命令 (Verb) 集合。

public interface class IWebActionable

public interface IWebActionable

type IWebActionable = interface

Public Interface IWebActionable

衍生: System.Web.UI.WebControls.WebParts.WebPart

範例

下列程式碼範例示範 IWebActionable 介面的簡單實作。程式代碼範例的第一個部分示範如何在使用者控件中實作介面。使用者控制者會 Verbs 建立兩個自定義動詞，並定義當使用者按兩下任一動詞時所呼叫的方法，以實作屬性。為了簡單起見，這兩個動詞都會使用相同的方法。方法會更新名為 VerbCounterClicks的屬性值。方法的程式 Page_Load 代碼會 Verbs 存取控件的屬性，以顯示集合中自定義動詞命令的總計數。此計數不包含標準網頁元件動詞。

重要

這個範例有一個可接受使用者輸入的文字方塊，這可能會造成安全性威脅。根據預設，ASP.NET Web 網頁會驗證使用者輸入未包含指令碼或 HTML 項目。如需詳細資訊，請參閱 Script Exploits Overview (指令碼攻擊概觀)。

<%@ control language="C#" classname="AccountUserControl" %>
<%@ implements 
    interface="System.Web.UI.WebControls.WebParts.IWebActionable" %>
<%@ Import Namespace="System.ComponentModel" %>

<script runat="server">

  private WebPartVerbCollection m_Verbs;
  
  [Personalizable]
  public string UserName
  {
    get
    {
      if (String.IsNullOrEmpty(Textbox1.Text) || 
        Textbox1.Text.Length < 0)
        return String.Empty;
      else
        return Textbox1.Text;
    }
    
    set
    {
      Textbox1.Text = value;
    }
  }
    
  [Personalizable]
  public string Phone
  {
    get
    {
      if(String.IsNullOrEmpty(Textbox2.Text) || 
        Textbox2.Text.Length < 0)
        return String.Empty;
      else
        return Textbox2.Text;
    }
    
    set
    {
      Textbox2.Text = value;
    }
  }

  // The following code handles the verbs.
  [Personalizable]
  public int VerbCounterClicks
  {
    get
    {
      object objVerbCounter = ViewState["VerbCounterClicks"];
      int VerbCounterClicks = 0;
      if (objVerbCounter != null)
        VerbCounterClicks = (int)objVerbCounter;

      return VerbCounterClicks;
    }
    set
    {
      ViewState["VerbCounterClicks"] = value;
    }
  }

  private void IncrementVerbCounterClicks(object sender, 
    WebPartEventArgs e)
  {
    VerbCounterClicks += 1;
    Label4.Text = "Custom Verbs Click Count: " + 
      this.VerbCounterClicks.ToString();
  }

  void Page_Load(object sender, EventArgs e)
  {
    Label3.Text = "Custom Verb Count:  " +
      WebPartManager.GetCurrentWebPartManager(Page).
      WebParts[0].Verbs.Count.ToString();
  }


  // <snippet3>
  // This property implements the IWebActionable interface.
  WebPartVerbCollection IWebActionable.Verbs
  {
    get
    {
      if (m_Verbs == null)
      {
        ArrayList verbsList = new ArrayList();
        WebPartVerb onlyVerb = new WebPartVerb
          ("customVerb1", new WebPartEventHandler(IncrementVerbCounterClicks));
        onlyVerb.Text = "My Verb";
        onlyVerb.Description = "VerbTooltip";
        onlyVerb.Visible = true;
        onlyVerb.Enabled = true;
        verbsList.Add(onlyVerb);
        WebPartVerb otherVerb = new WebPartVerb
          ("customVerb2", new WebPartEventHandler(IncrementVerbCounterClicks));
        otherVerb.Text = "My other Verb";
        otherVerb.Description = "Other VerbTooltip";
        otherVerb.Visible = true;
        otherVerb.Enabled = true;
        verbsList.Add(otherVerb);
        m_Verbs = new WebPartVerbCollection(verbsList);
        return m_Verbs;
      }
      return m_Verbs;
    }
  }
  // </snippet3>
  
</script>
<div>
<asp:label id="Label1" runat="server" AssociatedControlID="Textbox1">
  Name</asp:label>
<asp:textbox id="Textbox1" runat="server" />
</div>
<div>
<asp:label id="Label2" runat="server" AssociatedControlID="Textbox2">
  Phone</asp:label>
<asp:textbox id="Textbox2" runat="server"></asp:textbox>
</div>
<div>
<asp:button id="Button2" runat="server" text="Save Form Values" />
</div>
<hr />
<br />
<asp:Label ID="Label3" runat="server" Text="" />
<br />
<asp:Label ID="Label4" runat="server" Text="" />

<%@ control language="vb" classname="AccountUserControlVB" %>
<%@ implements 
  interface="System.Web.UI.WebControls.WebParts.IWebActionable" %>
<%@ Import Namespace="System.ComponentModel" %>

<script runat="server">

  Private m_Verbs As WebPartVerbCollection

  <Personalizable()> _
  Public Property UserName() As String
    Get
      If String.IsNullOrEmpty(Textbox1.Text) OrElse _
        Textbox1.Text.Length < 0 Then
        Return String.Empty
      Else
        Return Textbox1.Text
      End If
    End Get
    Set(ByVal value As String)
      Textbox1.Text = value
    End Set
  End Property


  <Personalizable()> _
  Public Property Phone() As String
    Get
      If String.IsNullOrEmpty(Textbox2.Text) OrElse _
        Textbox2.Text.Length < 0 Then
        Return String.Empty
      Else
        Return Textbox2.Text
      End If
    End Get
    Set(ByVal value As String)
      Textbox2.Text = value
    End Set
  End Property

  ' The following code handles the verbs.
  <Personalizable()> _
  Public Property VerbCounterClicks() As Integer
    Get
      Dim objVerbCounter As Object = _
        ViewState("VerbCounterClicks")
      VerbCounterClicks = 0
      If Not (objVerbCounter Is Nothing) Then
        VerbCounterClicks = CType(objVerbCounter, Int32)
      End If
      Return VerbCounterClicks
    End Get
    Set(ByVal value As Integer)
      ViewState("VerbCounterClicks") = value
    End Set
  End Property


  Private Sub IncrementVerbCounterClicks _
    (ByVal sender As Object, ByVal e As WebPartEventArgs)
    VerbCounterClicks += 1
    Label4.Text = "Custom Verbs Click Count: " + _
      Me.VerbCounterClicks.ToString()
  End Sub

  Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
    Label3.Text = "Custom Verb Count:  " + _
      WebPartManager.GetCurrentWebPartManager(Page). _
      WebParts(0).Verbs.Count.ToString()
  End Sub

  ' <snippet3>
  ' This property implements the IWebActionable interface.
  ReadOnly Property Verbs() As WebPartVerbCollection _
    Implements IWebActionable.Verbs
    Get
      If (m_Verbs Is Nothing) Then
        Dim verbsList As New ArrayList()
        Dim onlyVerb As New WebPartVerb _
          ("customVerb1", New WebPartEventHandler(AddressOf IncrementVerbCounterClicks))
        onlyVerb.Text = "My Verb"
        onlyVerb.Description = "VerbTooltip"
        onlyVerb.Visible = True
        onlyVerb.Enabled = True
        verbsList.Add(onlyVerb)
        Dim otherVerb As New WebPartVerb _
          ("customVerb2", New WebPartEventHandler(AddressOf IncrementVerbCounterClicks))
        otherVerb.Text = "My other Verb"
        otherVerb.Description = "Other VerbTooltip"
        otherVerb.Visible = True
        otherVerb.Enabled = True
        verbsList.Add(otherVerb)
        m_Verbs = New WebPartVerbCollection(verbsList)
      End If
      Return m_Verbs
    End Get
  End Property
  ' </snippet3>

</script>
<div>
<asp:label id="Label1" runat="server" AssociatedControlID="Textbox1">
  Name</asp:label>
<asp:textbox id="Textbox1" runat="server" />
</div>
<div>
<asp:label id="Label2" runat="server" AssociatedControlID="Textbox2">
  Phone</asp:label>
<asp:textbox id="Textbox2" runat="server"></asp:textbox>
</div>
<div>
<asp:button id="Button2" runat="server" text="Save Form Values" />
</div>
<hr />
<br />
<asp:Label ID="Label3" runat="server" Text="" />
<br />
<asp:Label ID="Label4" runat="server" Text="" />

程式代碼範例的第二個部分是裝載使用者控制項.aspx頁面。因為控件是在控件中 WebPartZone 參考，所以在運行時間 ASP.NET 將使用者控件包裝在控件中 GenericWebPart ，並將它 WebPart 視為控件。在瀏覽器中載入頁面之後，請注意控制件底部的標籤會顯示屬性所參考 Verbs 集合中的自定義動詞數目。另請注意，如果您按下控件中的動詞功能表，然後按兩下其中一個動詞，另一個標籤會顯示已按下自定義動詞命令的總次數。

<%@ page language="c#" %>
<%@ register tagprefix="uc1" 
    tagname="AccountUserControl" 
    src="usercontrolverbcs.ascx"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>
      Personalizable User Control with IWebPart Properties
    </title>
  </head>
  <body>
    <form id="form1" runat="server">
      <asp:webpartmanager id="WebPartManager1" runat="server" />
      <asp:webpartzone 
        id="zone1" 
        runat="server" 
        headertext="Main" 
        CloseVerb-Enabled="false">
        <zonetemplate>
          <uc1:AccountUserControl 
            runat="server" 
            id="accountwebpart" 
            title="Account Form" />
        </zonetemplate>
      </asp:webpartzone> 
    </form>
  </body>
</html>

<%@ page language="vb" %>
<%@ register tagprefix="uc1" 
    tagname="AccountUserControlVB" 
    src="usercontrolverbvb.ascx"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>
      Personalizable User Control with IWebPart Properties
    </title>
  </head>
  <body>
    <form id="form1" runat="server">
      <asp:webpartmanager id="WebPartManager1" runat="server" />
      <asp:webpartzone 
        id="zone1" 
        runat="server" 
        headertext="Main" 
        CloseVerb-Enabled="false">
        <zonetemplate>
          <uc1:AccountUserControlVB 
            runat="server" 
            id="accountwebpart" 
            title="Account Form" />
        </zonetemplate>
      </asp:webpartzone> 
    </form>
  </body>
</html>

備註

控制件中的 WebPart 動詞命令是在使用者介面 (UI) 中執行的動作。一般而言，動詞命令是由按鈕、鏈接或功能表項等可點選控件在 UI 中表示。 Web 元件控制項集提供標準動詞命令，預設可供WebPart控件和其他伺服器控制項使用， (例如自定義、ASP.NET 和使用者控制項，) 在區域中放置WebPartZoneBase控制項時可像控件一樣WebPart。標準動詞包括關閉、最小化、還原、刪除、編輯和匯出。

您也可以建立與和伺服器控制件搭配 WebPart 使用的自訂動詞。介面 IWebActionable 及其 Verbs 屬性可讓您將自定義動詞命令整合到控件中。類別 WebPart 會實作 IWebActionable 介面，並實作其單一屬性。若要將自定義動詞新增至繼承自類別的 WebPart 控件，您必須覆寫 WebPart.Verbs 屬性、將自定義動詞新增至集合，並傳回集合。屬性所參考的 WebPart.Verbs 集合只包含自定義動詞;此集合中不包含標準動詞。控件null中WebPart屬性的預設傳回值為 WebPart.Verbs ，因為根據預設，集合中沒有自定義動詞。

將自定義動詞新增至非 WebPart 控件的伺服器控制項需要一個額外的步驟。在這些情況下，控件也必須實作 IWebActionable 介面並實作 Verbs 屬性。

將自定義動詞新增至 Verbs 集合之後，Web 元件控件集會自動處理建立和轉譯自定義動詞命令所需的其他步驟。

屬性

Verbs

取得自訂 WebPartVerb 物件集合的參考。

適用於

共用方式為

IWebActionable 介面

定義

範例

備註

屬性

適用於

另請參閱

其他資源