AdCreatedEventHandler 代理人
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。
public delegate void AdCreatedEventHandler(System::Object ^ sender, AdCreatedEventArgs ^ e);public delegate void AdCreatedEventHandler(object sender, AdCreatedEventArgs e);type AdCreatedEventHandler = delegate of obj * AdCreatedEventArgs -> unitPublic Delegate Sub AdCreatedEventHandler(sender As Object, e As AdCreatedEventArgs)參數
- sender
- Object
事件的來源。
包含事件資料的 AdCreatedEventArgs。
範例
下列程式碼範例示範如何指定 和 撰寫 AdCreated 事件的處理常式程式碼。 當控制項建立時 AdRotator ，它會取得與公告相關聯的 URL，並在 控制項下方顯示它。 此範例需要下列範例中所列的 XML 檔案 (Ads.xml) 。
<%@ Page Language="C#" AutoEventWireup="True" %>
<!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>AdRotator Example</title>
</head>
<script language="c#" runat="server">
void AdCreated_Event(Object sender, AdCreatedEventArgs e)
{
Message.Text=e.NavigateUrl;
}
</script>
<body>
<form id="form1" runat="server">
<h3>AdRotator Example</h3>
<asp:AdRotator id="test1" runat="server"
AdvertisementFile = "~/App_Data/Ads.xml"
Borderwidth="1"
Target="_blank"
OnAdCreated="AdCreated_Event"/><br /><br />
<asp:label id="Message" runat="server"/>
</form>
</body>
</html>
<%@ Page Language="VB" AutoEventWireup="True" %>
<!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>AdRotator Example</title>
</head>
<script language="vb" runat="server">
Sub AdCreated_Event(sender As Object, e As AdCreatedEventArgs)
Message.Text=e.NavigateUrl
End Sub
</script>
<body>
<form id="form1" runat="server">
<h3>AdRotator Example</h3>
<asp:AdRotator id="test1" runat="server"
AdvertisementFile = "~/App_Data/Ads.xml"
Borderwidth="1"
Target="_blank"
OnAdCreated="AdCreated_Event"/><br /><br />
<asp:label id="Message" runat="server"/>
</form>
</body>
</html>
下列程式碼範例示範如何格式化包含廣告資訊的 XML 檔案。 如需 XML 檔案的詳細資訊，請參閱 AdvertisementFile 類別的 AdRotator 屬性。
<Advertisements>
<Ad>
<ImageUrl>images/image1.jpg</ImageUrl>
<NavigateUrl>http://www.microsoft.com</NavigateUrl>
<AlternateText>Microsoft Main Site</AlternateText>
<LabelText>Microsoft Main</LabelText>
</Ad>
<Ad>
<ImageUrl>images/image2.jpg</ImageUrl>
<NavigateUrl>http://www.wingtiptoys.com</NavigateUrl>
<AlternateText>Wingtip Toys Site</AlternateText>
<LabelText>Wingtip Toys</LabelText>
</Ad>
</Advertisements>
<%@ Page Language="C#" AutoEventWireup="True" %>
<!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>AdRotator AdCreated Example</title>
</head>
<script runat="server">
void Page_Load(Object sender, EventArgs e)
{
// Create an EventHandler delegate for the method you want to handle the event
// and then add it to the list of methods called when the event is raised.
Ad.AdCreated += new System.Web.UI.WebControls.AdCreatedEventHandler(this.AdCreated_Event);
}
void AdCreated_Event(Object sender, AdCreatedEventArgs e)
{
// Override the AlternateText value from the ads.xml file.
e.AlternateText = "Visit this site!";
}
</script>
<body>
<form id="form1" runat="server">
<h3>AdRotator AdCreated Example</h3>
Notice that the AlternateText property of the advertisement <br />
has been programmatically modified from the value in the XML <br />
file.
<br /><br />
<asp:AdRotator id="Ad" runat="server"
AdvertisementFile = "~/App_Data/Ads.xml"
Borderwidth="1"
Target="_blank"/>
</form>
</body>
</html>
<%@ Page Language="VB" AutoEventWireup="True" %>
<!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>AdRotator AdCreated Example</title>
</head>
<script runat="server">
Sub Page_Load(sender As Object, e As EventArgs)
' Create an EventHandler delegate for the method you want to handle the event
' and then add it to the list of methods called when the event is raised.
AddHandler Ad.AdCreated, AddressOf AdCreated_Event
End Sub
Sub AdCreated_Event(sender As Object, e As AdCreatedEventArgs)
' Override the AlternateText value from the ads.xml file.
e.AlternateText = "Visit this site!"
End Sub
</script>
<body>
<form id="form1" runat="server">
<h3>AdRotator AdCreated Example</h3>
Notice that the AlternateText property of the advertisement <br />
has been programmatically modified from the value in the XML <br />
file.
<br /><br />
<asp:AdRotator id="Ad" runat="server"
AdvertisementFile = "~/App_Data/Ads.xml"
Borderwidth="1"
Target="_blank"/>
</form>
</body>
</html>
備註
當 AdCreated 控制項在頁面上顯示廣告時 AdRotator ，就會引發 事件。
當您建立 AdCreatedEventHandler 委派 (Delegate) 時，就可以識別即將處理此事件的方法。 若要使事件與您的事件處理常式產生關聯，請將委派的執行個體 (Instance) 加入至事件。 除非您移除委派，否則每當事件發生時就會呼叫事件處理常式。 如需事件處理常式委派的詳細資訊，請參閱 處理和引發事件。
擴充方法
| GetMethodInfo(Delegate) |
取得表示特定委派所代表之方法的物件。 |
