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FontUnit-Struktur

  • Artikel

Stellt die Größe einer Schriftart dar.

Namespace: System.Web.UI.WebControls
Assembly: System.Web (in system.web.dll)

Syntax

'Declaration
<SerializableAttribute> _
Public Structure FontUnit
'Usage
Dim instance As FontUnit

[SerializableAttribute] 
public struct FontUnit

[SerializableAttribute] 
public value class FontUnit

/** @attribute SerializableAttribute() */ 
public final class FontUnit extends ValueType

JScript unterstützt die Verwendung von Strukturen, aber nicht die Deklaration von neuen Strukturen.

Hinweise

Eine Liste der anfänglichen Eigenschaftenwerte für eine Instanz von FontUnit finden Sie unter FontUnit-Konstruktor.

Beispiel

Im folgenden Codebeispiel wird veranschaulicht, wie die Formateigenschaften mehrerer Steuerelemente mit einem Style-Objekt gleichzeitig geändert werden. Wenn sich einer der Style-Eigenschaftenwerte ändert, muss die ApplyStyle-Methode von jedem zugehörigen Steuerelement aufgerufen werden. Nicht alle in diesem Beispiel enthaltenen Steuerelemente unterstützen alle veranschaulichten Eigenschaften. Wenn ein Steuerelement eine bestimmte Eigenschaft nicht unterstützt, ändert sich das Erscheinungsbild des Steuerelements nicht, wenn der Eigenschaftenwert geändert wird.

<%@ Page language="VB" AutoEventWireup="true" %>
<%@ Import Namespace="System.Drawing" %>
<%@ Import Namespace="System.Data" %>

<html>
    <head>
        <script runat="server">

            Private Dim primaryStyle As New Style()

            Sub Page_Load(sender As Object, e As System.EventArgs)
                If Not Page.IsPostBack Then
                    ' Add data to the borderColorList, 
                    ' backColorList, and foreColorList controls.
                    Dim colors As New ListItemCollection()
                    colors.Add(Color.Black.Name)
                    colors.Add(Color.Blue.Name)
                    colors.Add(Color.Green.Name)
                    colors.Add(Color.Orange.Name)
                    colors.Add(Color.Purple.Name)
                    colors.Add(Color.Red.Name)
                    colors.Add(Color.White.Name)
                    colors.Add(Color.Yellow.Name)
                    borderColorList.DataSource = colors
                    borderColorList.DataBind()        
                    backColorList.DataSource = colors
                    backColorList.DataBind()
                    foreColorList.DataSource = colors
                    foreColorList.DataBind()
                
                    ' Add data to the borderStyleList control.
                    Dim styles As New ListItemCollection()
                    Dim styleType As Type = GetType(BorderStyle)
                    Dim s As String
                    For Each s in [Enum].GetNames(styleType)
                        styles.Add(s)
                    Next s
                    borderStyleList.DataSource = styles
                    borderStyleList.DataBind()  

                    ' Add data to the borderWidthList control.
                    Dim widths As New ListItemCollection()
                    Dim i As Integer
                    for i = 0 To 10
                        widths.Add(i.ToString() & "px")
                    Next i
                    borderWidthList.DataSource = widths
                    borderWidthList.DataBind()

                    ' Add data to the fontNameList control.
                    Dim names As New ListItemCollection()
                    names.Add("Arial")
                    names.Add("Courier")
                    names.Add("Garamond")
                    names.Add("Time New Roman")
                    names.Add("Verdana")
                    fontNameList.DataSource = names
                    fontNameList.DataBind()

                    ' Add data to the fontSizeList control.
                    Dim fontSizes As New ListItemCollection()
                    fontSizes.Add("Small")
                    fontSizes.Add("Medium")
                    fontSizes.Add("Large")
                    fontSizes.Add("10pt")
                    fontSizes.Add("14pt")
                    fontSizes.Add("20pt")
                    fontSizeList.DataSource = fontSizes
                    fontSizeList.DataBind()
                    
                    ' Set primaryStyle as the style for each control.
                    Label1.ApplyStyle(primaryStyle)
                    ListBox1.ApplyStyle(primaryStyle)
                    Button1.ApplyStyle(primaryStyle)
                    Table1.ApplyStyle(primaryStyle)
                    TextBox1.ApplyStyle(primaryStyle)
                End If
            End Sub

            Sub ChangeBorderColor(sender As Object, e As System.EventArgs)
                primaryStyle.BorderColor = _
                    Color.FromName(borderColorList.SelectedItem.Text)
                Label1.ApplyStyle(primaryStyle)
                ListBox1.ApplyStyle(primaryStyle)
                Button1.ApplyStyle(primaryStyle)
                Table1.ApplyStyle(primaryStyle)
                TextBox1.ApplyStyle(primaryStyle)
            End Sub

            Sub ChangeBackColor(sender As Object, e As System.EventArgs)
                primaryStyle.BackColor = _
                    Color.FromName(backColorList.SelectedItem.Text)
                Label1.ApplyStyle(primaryStyle)
                ListBox1.ApplyStyle(primaryStyle)
                Button1.ApplyStyle(primaryStyle)
                Table1.ApplyStyle(primaryStyle)
                TextBox1.ApplyStyle(primaryStyle)
            End Sub

            Sub ChangeForeColor(sender As Object, e As System.EventArgs)
                primaryStyle.ForeColor = _
                    Color.FromName(foreColorList.SelectedItem.Text)
                Label1.ApplyStyle(primaryStyle)
                ListBox1.ApplyStyle(primaryStyle)
                Button1.ApplyStyle(primaryStyle)
                Table1.ApplyStyle(primaryStyle)
                TextBox1.ApplyStyle(primaryStyle)
            End Sub

            Sub ChangeBorderStyle(sender As Object, e As System.EventArgs)
                primaryStyle.BorderStyle = _
                    CType([Enum].Parse(GetType(BorderStyle), _
                    borderStyleList.SelectedItem.Text), BorderStyle)
                Label1.ApplyStyle(primaryStyle)
                ListBox1.ApplyStyle(primaryStyle)
                Button1.ApplyStyle(primaryStyle)
                Table1.ApplyStyle(primaryStyle)
                TextBox1.ApplyStyle(primaryStyle)
            End Sub

            Sub ChangeBorderWidth(sender As Object, e As System.EventArgs)
                primaryStyle.BorderWidth = _
                    Unit.Parse(borderWidthList.SelectedItem.Text)
                Label1.ApplyStyle(primaryStyle)
                ListBox1.ApplyStyle(primaryStyle)
                Button1.ApplyStyle(primaryStyle)
                Table1.ApplyStyle(primaryStyle)
                TextBox1.ApplyStyle(primaryStyle)
            End Sub

            Sub ChangeFont(sender As Object, e As System.EventArgs)
                primaryStyle.Font.Name = _
                    fontNameList.SelectedItem.Text
                Label1.ApplyStyle(primaryStyle)
                ListBox1.ApplyStyle(primaryStyle)
                Button1.ApplyStyle(primaryStyle)
                Table1.ApplyStyle(primaryStyle)
                TextBox1.ApplyStyle(primaryStyle)
            End Sub

            Sub ChangeFontSize(sender As Object, e As System.EventArgs)
                primaryStyle.Font.Size = _
                    FontUnit.Parse(fontSizeList.SelectedItem.Text)
                Label1.ApplyStyle(primaryStyle)
                ListBox1.ApplyStyle(primaryStyle)
                Button1.ApplyStyle(primaryStyle)
                Table1.ApplyStyle(primaryStyle)
                TextBox1.ApplyStyle(primaryStyle)
            End Sub
        </script>
    </head>

    <body>
        <form id="Form1" runat="server">
            <table cellPadding="6" border="0">
                <tr>
                    <td>
                        <asp:label id="Label1" 
                            Text="Border Properties Example" Runat="server">
                            <center><br>Label Styles</center>
                        </asp:label>
                    </td>
                    <td>
                        <asp:button id="Button1" runat="server" 
                            Text="Button Styles">
                        </asp:button>
                    </td>
                    <td>
                        <asp:listbox id="ListBox1" Runat="server">
                            <asp:ListItem Value="0" Text="List Item 0">
                            </asp:ListItem>
                            <asp:ListItem Value="1" Text="List Item 1">
                            </asp:ListItem>
                            <asp:ListItem Value="2" Text="List Item 2">
                            </asp:ListItem>
                        </asp:listbox>
                    </td>
                    <td>
                        <asp:textbox id="TextBox1" 
                            Text="TextBox Styles" Runat="server">
                        </asp:textbox>
                    </td>
                    <td>
                        <asp:table id="Table1" Runat="server">
                            <asp:TableRow>
                                <asp:TableCell Text="(0,0)"></asp:TableCell>
                                <asp:TableCell Text="(0,1)"></asp:TableCell>
                            </asp:TableRow>
                            <asp:TableRow>
                                <asp:TableCell Text="(1,0)"></asp:TableCell>
                                <asp:TableCell Text="(1,1)"></asp:TableCell>
                            </asp:TableRow>
                        </asp:table>
                    </td>
                </tr>
                <tr>
                    <td>
                        <asp:Label Runat="server" Text="Border Color:">
                        </asp:Label>
                        <asp:dropdownlist id="borderColorList" 
                            Runat="server" AutoPostBack="True" 
                            OnSelectedIndexChanged="ChangeBorderColor">
                        </asp:dropdownlist>
                        <br>
                        <asp:Label Runat="server" Text="Border Style:">
                        </asp:Label>
                        <asp:dropdownlist id="borderStyleList" 
                            Runat="server" AutoPostBack="True"
                            OnSelectedIndexChanged="ChangeBorderStyle">
                        </asp:dropdownlist>
                        <br>
                        <asp:Label Runat="server" Text="Border Width">
                        </asp:Label>
                        <asp:dropdownlist id="borderWidthList" 
                            Runat="server" AutoPostBack="True"
                            OnSelectedIndexChanged="ChangeBorderWidth">
                        </asp:dropdownlist>
                    </td>
                    <td>
                        <asp:Label Runat="server" Text="Back Color:">
                        </asp:Label>
                        <asp:dropdownlist id="backColorList" 
                            Runat="server" AutoPostBack="True"
                            OnSelectedIndexChanged="ChangeBackColor">
                        </asp:dropdownlist>
                        <br>
                        <asp:Label Runat="server" Text="Foreground Color:">
                        </asp:Label>
                        <asp:dropdownlist id="foreColorList" 
                            Runat="server" AutoPostBack="True"
                            OnSelectedIndexChanged="ChangeForeColor">
                        </asp:dropdownlist>
                    </td>
                    <td>
                        <asp:Label Runat="server" Text="Font Name:">
                        </asp:Label>
                        <asp:dropdownlist id="fontNameList" 
                            Runat="server" AutoPostBack="True"
                            OnSelectedIndexChanged="ChangeFont">
                        </asp:dropdownlist>
                        <br>
                        <asp:Label Runat="server" Text="Font Size:">
                        </asp:Label>
                        <asp:dropdownlist id="fontSizeList" 
                            Runat="server" AutoPostBack="True" 
                            OnSelectedIndexChanged="ChangeFontSize">
                        </asp:dropdownlist>
                    </td>
                </tr>
            </table>

        </form>
    </body>
</html>

<%@ Page language="C#" AutoEventWireup="true" %>
<%@ Import Namespace="System.Drawing" %>
<%@ Import Namespace="System.Data" %>

<html>
    <head>
        <script runat="server">

            private Style primaryStyle = new Style();

            void Page_Load(object sender, System.EventArgs e)
            {
                if (!Page.IsPostBack)
                {
                    // Add data to the borderColorList, 
                    // backColorList, and foreColorList controls.
                    ListItemCollection colors = new ListItemCollection();
                    colors.Add(Color.Black.Name);
                    colors.Add(Color.Blue.Name);
                    colors.Add(Color.Green.Name);
                    colors.Add(Color.Orange.Name);
                    colors.Add(Color.Purple.Name);
                    colors.Add(Color.Red.Name);
                    colors.Add(Color.White.Name);
                    colors.Add(Color.Yellow.Name);
                    borderColorList.DataSource = colors;
                    borderColorList.DataBind();         
                    backColorList.DataSource = colors;
                    backColorList.DataBind();
                    foreColorList.DataSource = colors;
                    foreColorList.DataBind();

                    // Add data to the borderStyleList control.
                    ListItemCollection styles = new ListItemCollection();
                    Type styleType = typeof(BorderStyle);
                    foreach (string s in Enum.GetNames(styleType))
                    {
                        styles.Add(s);
                    }
                    borderStyleList.DataSource = styles;
                    borderStyleList.DataBind();  

                    // Add data to the borderWidthList control.
                    ListItemCollection widths = new ListItemCollection();
                    for (int i = 0; i < 11; i++)
                    {
                        widths.Add(i.ToString() + "px");
                    }
                    borderWidthList.DataSource = widths;
                    borderWidthList.DataBind();

                    // Add data to the fontNameList control.
                    ListItemCollection names = new ListItemCollection();
                    names.Add("Arial");
                    names.Add("Courier");
                    names.Add("Garamond");
                    names.Add("Time New Roman");
                    names.Add("Verdana");
                    fontNameList.DataSource = names;
                    fontNameList.DataBind();

                    // Add data to the fontSizeList control.
                    ListItemCollection fontSizes = new ListItemCollection();
                    fontSizes.Add("Small");
                    fontSizes.Add("Medium");
                    fontSizes.Add("Large");
                    fontSizes.Add("10pt");
                    fontSizes.Add("14pt");
                    fontSizes.Add("20pt");
                    fontSizeList.DataSource = fontSizes;
                    fontSizeList.DataBind();
                    
                    //Set primaryStyle as the style for each control.
                    Label1.ApplyStyle(primaryStyle);
                    ListBox1.ApplyStyle(primaryStyle);
                    Button1.ApplyStyle(primaryStyle);
                    Table1.ApplyStyle(primaryStyle);
                    TextBox1.ApplyStyle(primaryStyle);
                }
            }
            void ChangeBorderColor(object sender, System.EventArgs e)
            {
                primaryStyle.BorderColor = 
                    Color.FromName(borderColorList.SelectedItem.Text);
                Label1.ApplyStyle(primaryStyle);
                ListBox1.ApplyStyle(primaryStyle);
                Button1.ApplyStyle(primaryStyle);
                Table1.ApplyStyle(primaryStyle);
                TextBox1.ApplyStyle(primaryStyle);
            }
    
            void ChangeBackColor(object sender, System.EventArgs e)
            {
                primaryStyle.BackColor = 
                    Color.FromName(backColorList.SelectedItem.Text);
                Label1.ApplyStyle(primaryStyle);
                ListBox1.ApplyStyle(primaryStyle);
                Button1.ApplyStyle(primaryStyle);
                Table1.ApplyStyle(primaryStyle);
                TextBox1.ApplyStyle(primaryStyle);
            }

            void ChangeForeColor(object sender, System.EventArgs e)
            {
                primaryStyle.ForeColor = 
                    Color.FromName(foreColorList.SelectedItem.Text);
                Label1.ApplyStyle(primaryStyle);
                ListBox1.ApplyStyle(primaryStyle);
                Button1.ApplyStyle(primaryStyle);
                Table1.ApplyStyle(primaryStyle);
                TextBox1.ApplyStyle(primaryStyle);
            }

            void ChangeBorderStyle(object sender, System.EventArgs e)
            {
                primaryStyle.BorderStyle = 
                    (BorderStyle)Enum.Parse(typeof(BorderStyle), 
                    borderStyleList.SelectedItem.Text);
                Label1.ApplyStyle(primaryStyle);
                ListBox1.ApplyStyle(primaryStyle);
                Button1.ApplyStyle(primaryStyle);
                Table1.ApplyStyle(primaryStyle);
                TextBox1.ApplyStyle(primaryStyle);
            }

            void ChangeBorderWidth(object sender, System.EventArgs e)
            {
                primaryStyle.BorderWidth = 
                    Unit.Parse(borderWidthList.SelectedItem.Text);
                Label1.ApplyStyle(primaryStyle);
                ListBox1.ApplyStyle(primaryStyle);
                Button1.ApplyStyle(primaryStyle);
                Table1.ApplyStyle(primaryStyle);
                TextBox1.ApplyStyle(primaryStyle);
            }

            void ChangeFont(object sender, System.EventArgs e)
            {
                primaryStyle.Font.Name = 
                    fontNameList.SelectedItem.Text;
                Label1.ApplyStyle(primaryStyle);
                ListBox1.ApplyStyle(primaryStyle);
                Button1.ApplyStyle(primaryStyle);
                Table1.ApplyStyle(primaryStyle);
                TextBox1.ApplyStyle(primaryStyle);
            }

            void ChangeFontSize(object sender, System.EventArgs e)
            {
                primaryStyle.Font.Size = 
                    FontUnit.Parse(fontSizeList.SelectedItem.Text);
                Label1.ApplyStyle(primaryStyle);
                ListBox1.ApplyStyle(primaryStyle);
                Button1.ApplyStyle(primaryStyle);
                Table1.ApplyStyle(primaryStyle);
                TextBox1.ApplyStyle(primaryStyle);
            }
        </script>
    </head>

    <body>
        <form id="Form1" runat="server">
            <table cellPadding="6" border="0">
                <tr>
                    <td>
                        <asp:label id="Label1" 
                            Text="Border Properties Example" Runat="server">
                            <center><br>Label Styles</center>
                        </asp:label>
                    </td>
                    <td>
                        <asp:button id="Button1" runat="server" 
                            Text="Button Styles">
                        </asp:button>
                    </td>
                    <td>
                        <asp:listbox id="ListBox1" Runat="server">
                            <asp:ListItem Value="0" Text="List Item 0">
                            </asp:ListItem>
                            <asp:ListItem Value="1" Text="List Item 1">
                            </asp:ListItem>
                            <asp:ListItem Value="2" Text="List Item 2">
                            </asp:ListItem>
                        </asp:listbox>
                    </td>
                    <td>
                        <asp:textbox id="TextBox1" 
                            Text="TextBox Styles" Runat="server">
                        </asp:textbox>
                    </td>
                    <td>
                        <asp:table id="Table1" Runat="server">
                            <asp:TableRow>
                                <asp:TableCell Text="(0,0)"></asp:TableCell>
                                <asp:TableCell Text="(0,1)"></asp:TableCell>
                            </asp:TableRow>
                            <asp:TableRow>
                                <asp:TableCell Text="(1,0)"></asp:TableCell>
                                <asp:TableCell Text="(1,1)"></asp:TableCell>
                            </asp:TableRow>
                        </asp:table>
                    </td>
                </tr>
                <tr>
                    <td>
                        <asp:Label Runat="server" Text="Border Color:">
                        </asp:Label>
                        <asp:dropdownlist id="borderColorList" 
                            Runat="server" AutoPostBack="True" 
                            OnSelectedIndexChanged="ChangeBorderColor">
                        </asp:dropdownlist>
                        <br>
                        <asp:Label Runat="server" Text="Border Style:">
                        </asp:Label>
                        <asp:dropdownlist id="borderStyleList" 
                            Runat="server" AutoPostBack="True"
                            OnSelectedIndexChanged="ChangeBorderStyle">
                        </asp:dropdownlist>
                        <br>
                        <asp:Label Runat="server" Text="Border Width">
                        </asp:Label>
                        <asp:dropdownlist id="borderWidthList" 
                            Runat="server" AutoPostBack="True"
                            OnSelectedIndexChanged="ChangeBorderWidth">
                        </asp:dropdownlist>
                    </td>
                    <td>
                        <asp:Label Runat="server" Text="Back Color:">
                        </asp:Label>
                        <asp:dropdownlist id="backColorList" 
                            Runat="server" AutoPostBack="True"
                            OnSelectedIndexChanged="ChangeBackColor">
                        </asp:dropdownlist>
                        <br>
                        <asp:Label Runat="server" Text="Foreground Color:">
                        </asp:Label>
                        <asp:dropdownlist id="foreColorList" 
                            Runat="server" AutoPostBack="True"
                            OnSelectedIndexChanged="ChangeForeColor">
                        </asp:dropdownlist>
                    </td>
                    <td>
                        <asp:Label Runat="server" Text="Font Name:">
                        </asp:Label>
                        <asp:dropdownlist id="fontNameList" 
                            Runat="server" AutoPostBack="True"
                            OnSelectedIndexChanged="ChangeFont">
                        </asp:dropdownlist>
                        <br>
                        <asp:Label Runat="server" Text="Font Size:">
                        </asp:Label>
                        <asp:dropdownlist id="fontSizeList" 
                            Runat="server" AutoPostBack="True" 
                            OnSelectedIndexChanged="ChangeFontSize">
                        </asp:dropdownlist>
                    </td>
                </tr>
            </table>

        </form>
    </body>
</html>

Threadsicherheit

Alle öffentlichen statischen (Shared in Visual Basic) Member dieses Typs sind threadsicher. Bei Instanzmembern ist die Threadsicherheit nicht gewährleistet.

Plattformen

Windows 98, Windows 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

.NET Framework unterstützt nicht alle Versionen sämtlicher Plattformen. Eine Liste der unterstützten Versionen finden Sie unter Systemanforderungen.

Versionsinformationen

.NET Framework

Unterstützt in: 2.0, 1.1, 1.0

Siehe auch

Referenz

FontUnit-Member
System.Web.UI.WebControls-Namespace