共用方式為


Panel.BackImageUrl 屬性

定義

取得或設定面板控制項背景影像的 URL。

public:
 virtual property System::String ^ BackImageUrl { System::String ^ get(); void set(System::String ^ value); };
[System.ComponentModel.Bindable(true)]
public virtual string BackImageUrl { get; set; }
public virtual string BackImageUrl { get; set; }
[<System.ComponentModel.Bindable(true)>]
member this.BackImageUrl : string with get, set
member this.BackImageUrl : string with get, set
Public Overridable Property BackImageUrl As String

屬性值

面板控制項背景影像的 URL。 預設為 Empty

屬性

範例

下列範例說明如何以程序設計方式設定 BackImageUrlPanel屬性。

注意

下列程式代碼範例會使用單一檔案程式代碼模型,如果直接複製到程式代碼後置檔案,可能無法正常運作。 此程式代碼範例必須複製到擴展名為 .aspx的空文本檔。 如需 Web Forms 程式代碼模型的詳細資訊,請參閱 ASP.NET 網頁代碼模型

<%@ 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>
    <title>Panel Example</title>
<script language="C#" runat="server">
 
     void Page_Load(Object sender, EventArgs e) {
        Label l = new Label();
        l.Text = "This panel contains a right justified label.";
        Panel1.Controls.Add(l);
     }
     
 
     void Button1_Click(Object sender, EventArgs e) {
        Panel1.BackImageUrl = 
            "//localhost/quickstart/aspplus/images/warning.gif";
     }
 
     </script>
 
 </head>
 <body>
 
     <h3>Panel Example</h3>
 
     <form id="form1" runat="server">
 
     <asp:Panel id="Panel1" Height="200" Width="200" BackColor="Gainsboro"
     Wrap="True" HorizontalAlign="Right" runat="server"/>
 
         <asp:Button id="Button1" OnClick="Button1_Click"
     Text="Set the label background" 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>
    <title>Panel Example</title>
<script language="VB" runat="server">
 
     Sub Page_Load(sender As Object, e As EventArgs)
        Dim l As New Label()
        l.Text = "This panel contains a right justified label."
        Panel1.Controls.Add(l)
     End Sub     
 
     Sub Button1_Click(sender As Object, e As EventArgs)
        Panel1.BackImageUrl = _
            "//localhost/quickstart/aspplus/images/warning.gif"
     End Sub
 
     </script>
 
 </head>
 <body>
 
     <h3>Panel Example</h3>
 
     <form id="form1" runat="server">
 
     <asp:Panel id="Panel1" Height="200" Width="200" BackColor="Gainsboro"
     Wrap="True" HorizontalAlign="Right" runat="server"/>
 
         <asp:Button id="Button1" OnClick="Button1_Click"
     Text="Set the label background" runat="server"/>
 
     </form>
 
 </body>
 </html>

備註

使用這個屬性來顯示控件的 Panel 自定義影像。

如果影像小於 Panel,則會將它並排以填入 Panel

注意

只有支援 HTML 4.0 或更新版本的瀏覽器才支援此屬性。

適用於