WebPartManager.DeleteWebPart(WebPart) 方法

public:
 void DeleteWebPart(System::Web::UI::WebControls::WebParts::WebPart ^ webPart);

public void DeleteWebPart(System.Web.UI.WebControls.WebParts.WebPart webPart);

member this.DeleteWebPart : System.Web.UI.WebControls.WebParts.WebPart -> unit

Public Sub DeleteWebPart (webPart As WebPart)

參數

範例

以下程式碼範例示範如何使用此 DeleteWebPart 方法。 第一次點擊 新增日曆 按鈕時，事件處理程式中的程式碼會建立 Calendar 一個控制項，並將其作為 GenericWebPart 物件加入區域。 由於該控制項是程式化新增的，因此是動態控制項，因此可以刪除。 當使用者點擊 刪除行事曆 按鈕時，程式碼會確認控制項存在，然後透過呼叫 DeleteWebPart 該方法將其刪除。

<%@ Page Language="C#" %>

<!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 Button2_Click(object sender, EventArgs e)
  {
    WebPartManager mgr = WebPartManager1;
    Calendar cal = new Calendar();
    cal.ID = "cal1";
    GenericWebPart calWebPart = mgr.CreateWebPart(cal);
    mgr.AddWebPart(calWebPart, WebPartZone1, 1);
  }

  protected void Button1_Click(object sender, EventArgs e)
  {
    if (WebPartZone1.WebParts.Count > 1)
    {
      WebPart cal = WebPartZone1.WebParts[1];
      if (cal.Controls[0].GetType().Name == "Calendar" 
        && cal != null)
        WebPartManager1.DeleteWebPart(cal);
    }

  }
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Adding a Server Control</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
      <asp:WebPartManager ID="WebPartManager1" 
        runat="server" />
      <asp:WebPartZone ID="WebPartZone1" runat="server">
        <ZoneTemplate>
          <asp:BulletedList  
            DisplayMode="HyperLink" 
            ID="BulletedList1" 
            runat="server"
            Title="My Links">
            <asp:ListItem Value="http://www.microsoft.com">
            Microsoft
            </asp:ListItem>
            <asp:ListItem Value="http://www.msn.com">
            MSN
            </asp:ListItem>
            <asp:ListItem Value="http://www.contoso.com">
            Contoso Corp.
            </asp:ListItem>
          </asp:BulletedList>
        </ZoneTemplate>
      </asp:WebPartZone>
      <asp:Button ID="Button1" runat="server" 
        Text="Delete Calendar" 
        OnClick="Button1_Click" />
      <asp:Button ID="Button2" runat="server" 
        Text="Add Calendar" 
        OnClick="Button2_Click" />
    </div>
    </form>
</body>
</html>

<%@ Page Language="vb" %>

<!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 Button2_Click(ByVal sender As Object, _
    ByVal e As System.EventArgs)
    Dim mgr As WebPartManager = WebPartManager1
    Dim cal As New Calendar()
    cal.ID = "cal1"
    Dim calWebPart As GenericWebPart = mgr.CreateWebPart(cal)
    mgr.AddWebPart(calWebPart, WebPartZone1, 1)
  End Sub

  Protected Sub Button1_Click(ByVal sender As Object, _
    ByVal e As System.EventArgs)

    If WebPartZone1.WebParts.Count > 1 Then
      Dim cal As WebPart = WebPartZone1.WebParts(1)
      If cal.Controls(0).GetType().Name = "Calendar" AndAlso _
        cal IsNot Nothing Then
        WebPartManager1.DeleteWebPart(cal)
      End If
    End If
  End Sub
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
    <title>Adding a Server Control</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
      <asp:WebPartManager ID="WebPartManager1" 
        runat="server" />
      <asp:WebPartZone ID="WebPartZone1" runat="server">
        <ZoneTemplate>
          <asp:BulletedList  
            DisplayMode="HyperLink" 
            ID="BulletedList1" 
            runat="server"
            Title="My Links">
            <asp:ListItem Value="http://www.microsoft.com">
            Microsoft
            </asp:ListItem>
            <asp:ListItem Value="http://www.msn.com">
            MSN
            </asp:ListItem>
            <asp:ListItem Value="http://www.contoso.com">
            Contoso Corp.
            </asp:ListItem>
          </asp:BulletedList>
        </ZoneTemplate>
      </asp:WebPartZone>
      <asp:Button ID="Button1" runat="server" 
        Text="Delete Calendar" 
        OnClick="Button1_Click" />
      <asp:Button ID="Button2" runat="server" 
        Text="Add Calendar" 
        OnClick="Button2_Click" />
    </div>
    </form>
</body>
</html>

備註

此 DeleteWebPart 方法永久移除頁面中參數 webPart 所代表的控制項。 與封閉控制項不同，關閉控制項會被加入 PageCatalogPart 控制項並可重新加入頁面，而已刪除的控制實例永遠無法被重新加入頁面。

只有動態控制可以刪除。 動態控制項可透過程式化或使用者從目錄中新增控制項到頁面。 靜態控制是以標記或持久化格式宣告式加入頁面。 由於宣告式標籤永久存在於標記中，靜態控制項永遠無法刪除，但可以關閉並重新開啟。

另請參閱

• IsClosed
• IsStatic
• ASP.NET 網頁零件控制