BulletStyle 列舉

參考

定義

命名空間:: System.Web.UI.WebControls

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。

指定可以套用至 BulletedList 控制項中之清單項目的項目符號樣式。

public enum class BulletStyle

public enum BulletStyle

type BulletStyle =

Public Enum BulletStyle

繼承: Object

ValueType

Enum
BulletStyle

欄位

Circle	7	項目符號樣式為空心圓形。
CustomImage	9	項目符號樣式為自訂影像。
Disc	6	項目符號樣式為實心圓形。
LowerAlpha	2	項目符號樣式為小寫字母 (a、b、c...)。
LowerRoman	4	項目符號樣式為小寫羅馬數字 (i、ii、iii...)。
NotSet	0	項目符號樣式未設定。呈現 BulletedList 控制項的瀏覽器將決定要顯示的項目符號樣式。
Numbered	1	項目符號樣式為數字 (1、2、3...)。
Square	8	項目符號樣式為實心方形。
UpperAlpha	3	項目符號樣式為大寫字母 (A、B、C...)。
UpperRoman	5	項目符號樣式為大寫羅馬數字 (I、II、III...)。

範例

下列範例示範如何建立 BulletedList 控制項。 ListBox控制項會填入所有可用的 BulletStyle 列舉值。專案符號樣式會根據使用者從清單方塊中選取的樣式而變更。


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

<!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>
            BulletStyle Example</title>
<script runat="server">       
        protected void Index_Changed(object sender, EventArgs e)
        {
            // Change the message displayed, based on 
            // the style selected from the list box.
            if (BulletStylesListBox.SelectedIndex > -1)
            {
                Message.Text = "You selected bullet style: " +
                    BulletStylesListBox.SelectedItem.Text;
            }

            // Change the bullet style used, based on 
            // the style selected from the list box.
            switch (BulletStylesListBox.SelectedIndex)
            {
                case 0:
                    ItemsBulletedList.BulletStyle = BulletStyle.Numbered;
                    break;
                case 1:
                    ItemsBulletedList.BulletStyle = BulletStyle.LowerAlpha;
                    break;
                case 2:
                    ItemsBulletedList.BulletStyle = BulletStyle.UpperAlpha;
                    break;
                case 3:
                    ItemsBulletedList.BulletStyle = BulletStyle.LowerRoman;
                    break;
                case 4:
                    ItemsBulletedList.BulletStyle = BulletStyle.UpperRoman;
                    break;
                case 5:
                    ItemsBulletedList.BulletStyle = BulletStyle.Disc;
                    break;
                case 6:
                    ItemsBulletedList.BulletStyle = BulletStyle.Circle;
                    break;
                case 7:
                    ItemsBulletedList.BulletStyle = BulletStyle.Square;
                    break;
                case 8:
                    ItemsBulletedList.BulletStyle = BulletStyle.CustomImage;
                    // Specify the path to the custom image to use for the bullet.
                    ItemsBulletedList.BulletImageUrl = "Images/image1.jpg";
                    break;
                case 9:
                    Message.Text = "You selected NotSet. The browser will determine the bullet style.";
                    break;
                default:
                    throw new Exception("You did not select a valid bullet style.");
            }

        }
</script>

</head>
<body>
    <form id="form1" runat="server">
        <h3>
            BulletStyle Example</h3>
        <asp:BulletedList ID="ItemsBulletedList" DisplayMode="Text" BulletStyle="NotSet"
            runat="server">
            <asp:ListItem Value="0">Coho Winery</asp:ListItem>
            <asp:ListItem Value="1">Contoso, Ltd.</asp:ListItem>
            <asp:ListItem Value="2">Tailspin Toys</asp:ListItem>
        </asp:BulletedList>
        <hr />
        <h4>
            Select a bullet type:</h4>
        <asp:ListBox ID="BulletStylesListBox" SelectionMode="Single" Rows="1" OnSelectedIndexChanged="Index_Changed"
            AutoPostBack="True" runat="server">
            <asp:ListItem Value="Numbered">Numbered</asp:ListItem>
            <asp:ListItem Value="LowerAlpha">LowerAlpha</asp:ListItem>
            <asp:ListItem Value="UpperAlpha">UpperAlpha</asp:ListItem>
            <asp:ListItem Value="LowerRoman">LowerRoman</asp:ListItem>
            <asp:ListItem Value="UpperRoman">UpperRoman</asp:ListItem>
            <asp:ListItem>Disc</asp:ListItem>
            <asp:ListItem>Circle</asp:ListItem>
            <asp:ListItem>Square</asp:ListItem>
            <asp:ListItem>CustomImage</asp:ListItem>
            <asp:ListItem Value="NotSet">NotSet</asp:ListItem>
        </asp:ListBox>
        <hr />
        <asp:Label ID="Message" runat="server" AssociatedControlID="BulletStylesListBox" />
    </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">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>BulletStyle Example</title>
<script runat="server">       
        Sub Index_Changed(ByVal sender As Object, ByVal e As System.EventArgs)
            ' Change the message displayed, based on 
            ' the style selected from the list box.
            If BulletStylesListBox.SelectedIndex > -1 Then
                Message.Text = "You selected bullet style: " & BulletStylesListBox.SelectedItem.Text
            End If

            ' Change the bullet style used, based on 
            ' the style selected from the list box.
            Select Case (BulletStylesListBox.SelectedIndex)
                Case 0
                    ItemsBulletedList.BulletStyle = BulletStyle.Numbered
                Case 1
                    ItemsBulletedList.BulletStyle = BulletStyle.LowerAlpha
                Case 2
                    ItemsBulletedList.BulletStyle = BulletStyle.UpperAlpha
                Case 3
                    ItemsBulletedList.BulletStyle = BulletStyle.LowerRoman
                Case 4
                    ItemsBulletedList.BulletStyle = BulletStyle.UpperRoman
                Case 5
                    ItemsBulletedList.BulletStyle = BulletStyle.Disc
                Case 6
                    ItemsBulletedList.BulletStyle = BulletStyle.Circle
                Case 7
                    ItemsBulletedList.BulletStyle = BulletStyle.Square
                Case 8
                    ItemsBulletedList.BulletStyle = BulletStyle.CustomImage
                    ' Specify the path to the custom image to use for the bullet.
                    ItemsBulletedList.BulletImageUrl = "Images/image1.jpg"
                Case 9
                    Message.Text = "You selected NotSet. The browser will determine the bullet style."
                Case Else
                    Throw New Exception("You did not select a valid bullet style.")
            End Select

        End Sub

</script>

</head>
<body>
    <form id="form1" runat="server"> 

        <h3>BulletStyle Example</h3>

        <asp:BulletedList id="ItemsBulletedList"             
            DisplayMode="Text" 
            BulletStyle="NotSet"
            runat="server">    
                <asp:ListItem Value="0">Coho Winery</asp:ListItem>
                <asp:ListItem Value="1">Contoso, Ltd.</asp:ListItem>
                <asp:ListItem Value="2">Tailspin Toys</asp:ListItem>
            </asp:BulletedList>        

            <hr />

        <h4>Select a bullet type:</h4>        
        <asp:ListBox id="BulletStylesListBox" 
            SelectionMode="Single"
            Rows="1" 
            OnSelectedIndexChanged="Index_Changed"
            AutoPostBack="True"
            runat="server">         
                <asp:ListItem Value="Numbered">Numbered</asp:ListItem>
                <asp:ListItem Value="LowerAlpha">LowerAlpha</asp:ListItem>
                <asp:ListItem Value="UpperAlpha">UpperAlpha</asp:ListItem>
                <asp:ListItem Value="LowerRoman">LowerRoman</asp:ListItem>
                <asp:ListItem Value="UpperRoman">UpperRoman</asp:ListItem>
                <asp:ListItem>Disc</asp:ListItem>
                <asp:ListItem>Circle</asp:ListItem>
                <asp:ListItem>Square</asp:ListItem>
                <asp:ListItem>CustomImage</asp:ListItem>       
                <asp:ListItem Value="NotSet">NotSet</asp:ListItem>
        </asp:ListBox>        
            
        <hr />

        <asp:Label id="Message" 
            runat="server"
            AssociatedControlID="BulletStylesListBox"/>            
                  
   </form>
</body>
</html>

備註

列舉 BulletStyle 代表您可以套用至控制項中 BulletedList 清單專案的專案符號樣式。屬性 BulletStyle 會使用這些列舉值來設定控制項中的 BulletedList 專案符號樣式。例如，如果您將 BulletStyle 屬性設定為 Disc ，控制項中的每個 BulletedList 清單專案都會在清單專案的內容前面呈現填滿的圓形，如下所示：

清單項目 1
清單項目 2
清單項目 3

指定 CustomImage 專案符號樣式可讓您為專案符號提供自己的影像。如果您指定 CustomImage 專案符號樣式，您也必須將 BulletImageUrl 屬性設定為要使用的自訂影像 URL。

如果您指定 NotSet ，則呈現控制項的瀏覽器會決定要與控制項中的 BulletedList 清單專案一起顯示的專案符號樣式。

適用於

BulletStyle 列舉

定義

欄位

範例

備註

適用於

另請參閱

其他資源