Style.ForeColor 属性

参考

定义

命名空间:: System.Web.UI.WebControls

程序集:: System.Web.dll

重要

一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。

获取或设置 Web 服务器控件的前景色（通常是文本颜色）。

public:
 property System::Drawing::Color ForeColor { System::Drawing::Color get(); void set(System::Drawing::Color value); };

[System.ComponentModel.Bindable(true)]
[System.ComponentModel.TypeConverter(typeof(System.Web.UI.WebControls.WebColorConverter))]
public System.Drawing.Color ForeColor { get; set; }

[System.ComponentModel.TypeConverter(typeof(System.Web.UI.WebControls.WebColorConverter))]
public System.Drawing.Color ForeColor { get; set; }

[<System.ComponentModel.Bindable(true)>]
[<System.ComponentModel.TypeConverter(typeof(System.Web.UI.WebControls.WebColorConverter))>]
member this.ForeColor : System.Drawing.Color with get, set

[<System.ComponentModel.TypeConverter(typeof(System.Web.UI.WebControls.WebColorConverter))>]
member this.ForeColor : System.Drawing.Color with get, set

Public Property ForeColor As Color

属性值

Color

表示控件前景色的 Color。默认值为 Empty。

属性: BindableAttribute TypeConverterAttribute

示例

此示例演示如何使用 Style 对象一次更改多个控件的样式属性。每次其中一个 Style 属性值更改时，每个控件都必须调用其 ApplyStyle 方法。请注意，并非所有包含的控件都支持演示的所有属性。如果控件不支持特定属性，则当属性值发生更改时，控件的外观将不会更改。

注意

下面的代码示例使用单文件代码模型，如果直接复制到代码隐藏文件中，可能无法正常工作。必须将此代码示例复制到扩展名为 .aspx 的空文本文件中。有关Web Forms代码模型的详细信息，请参阅 ASP.NET Web Forms 页代码模型。

<!--  -->

<!-- -->

<%@ Page Language="C#" %>
<%@ Import Namespace="System.Drawing" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<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();
            //<Snippet4>              

            // 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();
            //</Snippet4>           

            // 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("Times 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);
        }
    }
    //<Snippet5>
    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);
    }
    //</Snippet5>

    //<Snippet6>
    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);
    }
    //</Snippet6>

    //<Snippet7>
    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);
    }
    //</Snippet7>

    //<Snippet8>
    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);
    }
    //</Snippet8>

    //<Snippet9>
    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);
    }
    //</Snippet9>

    //<Snippet10>
    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);
    }
    //</Snippet10>

    //<Snippet11>
    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);
    }
    //</Snippet11>
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>

    <table cellpadding="6" border="0">
        <tr>
            <td rowspan="10" style="border:solid 1px Gray">
                <p>
                    <asp:label id="Label1" 
                        Text="Border Properties Example" Runat="server">
                        Label Styles
                    </asp:label>
                </p>
                <p>
                    <asp:button id="Button1" runat="server" 
                        Text="Button Styles">
                    </asp:button>
                </p>
                <p>
                    <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>
                </p>
                <p>
                    <asp:textbox id="TextBox1" 
                        Text="TextBox Styles" Runat="server">
                    </asp:textbox>
                </p>
                <p>
                    <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>
                </p>
            </td>
            <td align="right">
                <asp:Label ID="Label2" runat="server" 
                    AssociatedControlID="borderColorList" 
                    Text="Border Color:">
                </asp:Label>
            </td>
            <td>
                <asp:dropdownlist id="borderColorList" 
                    Runat="server" AutoPostBack="True" 
                    OnSelectedIndexChanged="ChangeBorderColor">
                </asp:dropdownlist>
            </td>
        </tr>
        <tr>
            <td align="right">
                <asp:Label ID="Label3" Runat="server" 
                    AssociatedControlID="borderStyleList"
                    Text="Border Style:">
                </asp:Label>
            </td>
            <td>
                <asp:dropdownlist id="borderStyleList" 
                    Runat="server" AutoPostBack="True"
                    OnSelectedIndexChanged="ChangeBorderStyle">
                </asp:dropdownlist>
            </td>
        </tr>
        <tr>
            <td align="right">
                <asp:Label ID="Label4" Runat="server" 
                    AssociatedControlID="borderWidthList"
                    Text="Border Width">
                </asp:Label>
            </td>
            <td>
                <asp:dropdownlist id="borderWidthList" 
                    Runat="server" AutoPostBack="True"
                    OnSelectedIndexChanged="ChangeBorderWidth">
                </asp:dropdownlist>
            </td>
        </tr>
        <tr>
            <td align="right">
                <asp:Label ID="Label5" Runat="server" 
                    AssociatedControlID="backColorList"
                    Text="Back Color:">
                </asp:Label>
            </td>
            <td>
                <asp:dropdownlist id="backColorList" 
                    Runat="server" AutoPostBack="True"
                    OnSelectedIndexChanged="ChangeBackColor">
                </asp:dropdownlist>
            </td>
        </tr>
        <tr>
            <td align="right">
                <asp:Label ID="Label6" Runat="server" 
                    AssociatedControlID="foreColorList"
                    Text="Foreground Color:">
                </asp:Label>
            </td>
            <td>
                <asp:dropdownlist id="foreColorList" 
                    Runat="server" AutoPostBack="True"
                    OnSelectedIndexChanged="ChangeForeColor">
                </asp:dropdownlist>
            </td>
        </tr>
        <tr>
            <td align="right">
                <asp:Label ID="Label7" Runat="server" 
                    AssociatedControlID="fontNameList"
                    Text="Font Name:">
                </asp:Label>
            </td>
            <td>
                <asp:dropdownlist id="fontNameList" 
                    Runat="server" AutoPostBack="True"
                    OnSelectedIndexChanged="ChangeFont">
                </asp:dropdownlist>
            </td>
        </tr>
        <tr>
            <td align="right">
                <asp:Label ID="Label8" Runat="server" 
                    AssociatedControlID="fontSizeList"
                    Text="Font Size:">
                </asp:Label>
            </td>
            <td>
                <asp:dropdownlist id="fontSizeList" 
                    Runat="server" AutoPostBack="True" 
                    OnSelectedIndexChanged="ChangeFontSize">
                </asp:dropdownlist>
            </td>
        </tr>
    </table>

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

<%@ Page Language="VB" %>
<%@ Import Namespace="System.Drawing" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">
    Private primaryStyle As New Style()

    Sub Page_Load(ByVal sender As Object, ByVal 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()
                
            '<Snippet4>
            ' 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()
            '</Snippet4>           

            ' 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("Times 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

    '<Snippet5>
    Sub ChangeBorderColor(ByVal sender As Object, ByVal 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
    '</Snippet5>

    '<Snippet6>    
    Sub ChangeBackColor(ByVal sender As Object, ByVal 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
    '</Snippet6>

    '<Snippet7>
    Sub ChangeForeColor(ByVal sender As Object, ByVal 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
    '</Snippet7>

    '<Snippet8>
    Sub ChangeBorderStyle(ByVal sender As Object, ByVal 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
    '</Snippet8>

    '<Snippet9>
    Sub ChangeBorderWidth(ByVal sender As Object, ByVal 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
    '</Snippet9>

    '<Snippet10>
    Sub ChangeFont(ByVal sender As Object, ByVal 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
    '</Snippet10>

    '<Snippet11>
    Sub ChangeFontSize(ByVal sender As Object, ByVal 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
    '</Snippet11>
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Applied Style Example</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>

    <table cellpadding="6" border="0">
        <tr>
            <td rowspan="10" style="border:solid 1px Gray">
                <p>
                    <asp:label id="Label1" 
                        Text="Border Properties Example" Runat="server">
                        Label Styles
                    </asp:label>
                </p>
                <p>
                    <asp:button id="Button1" runat="server" 
                        Text="Button Styles">
                    </asp:button>
                </p>
                <p>
                    <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>
                </p>
                <p>
                    <asp:textbox id="TextBox1" 
                        Text="TextBox Styles" Runat="server">
                    </asp:textbox>
                </p>
                <p>
                    <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>
                </p>
            </td>
            <td align="right">
                <asp:Label ID="Label2" runat="server" 
                    AssociatedControlID="borderColorList" 
                    Text="Border Color:">
                </asp:Label>
            </td>
            <td>
                <asp:dropdownlist id="borderColorList" 
                    Runat="server" AutoPostBack="True" 
                    OnSelectedIndexChanged="ChangeBorderColor">
                </asp:dropdownlist>
            </td>
        </tr>
        <tr>
            <td align="right">
                <asp:Label ID="Label3" Runat="server" 
                    AssociatedControlID="borderStyleList"
                    Text="Border Style:">
                </asp:Label>
            </td>
            <td>
                <asp:dropdownlist id="borderStyleList" 
                    Runat="server" AutoPostBack="True"
                    OnSelectedIndexChanged="ChangeBorderStyle">
                </asp:dropdownlist>
            </td>
        </tr>
        <tr>
            <td align="right">
                <asp:Label ID="Label4" Runat="server" 
                    AssociatedControlID="borderWidthList"
                    Text="Border Width">
                </asp:Label>
            </td>
            <td>
                <asp:dropdownlist id="borderWidthList" 
                    Runat="server" AutoPostBack="True"
                    OnSelectedIndexChanged="ChangeBorderWidth">
                </asp:dropdownlist>
            </td>
        </tr>
        <tr>
            <td align="right">
                <asp:Label ID="Label5" Runat="server" 
                    AssociatedControlID="backColorList"
                    Text="Back Color:">
                </asp:Label>
            </td>
            <td>
                <asp:dropdownlist id="backColorList" 
                    Runat="server" AutoPostBack="True"
                    OnSelectedIndexChanged="ChangeBackColor">
                </asp:dropdownlist>
            </td>
        </tr>
        <tr>
            <td align="right">
                <asp:Label ID="Label6" Runat="server" 
                    AssociatedControlID="foreColorList"
                    Text="Foreground Color:">
                </asp:Label>
            </td>
            <td>
                <asp:dropdownlist id="foreColorList" 
                    Runat="server" AutoPostBack="True"
                    OnSelectedIndexChanged="ChangeForeColor">
                </asp:dropdownlist>
            </td>
        </tr>
        <tr>
            <td align="right">
                <asp:Label ID="Label7" Runat="server" 
                    AssociatedControlID="fontNameList"
                    Text="Font Name:">
                </asp:Label>
            </td>
            <td>
                <asp:dropdownlist id="fontNameList" 
                    Runat="server" AutoPostBack="True"
                    OnSelectedIndexChanged="ChangeFont">
                </asp:dropdownlist>
            </td>
        </tr>
        <tr>
            <td align="right">
                <asp:Label ID="Label8" Runat="server" 
                    AssociatedControlID="fontSizeList"
                    Text="Font Size:">
                </asp:Label>
            </td>
            <td>
                <asp:dropdownlist id="fontSizeList" 
                    Runat="server" AutoPostBack="True" 
                    OnSelectedIndexChanged="ChangeFontSize">
                </asp:dropdownlist>
            </td>
        </tr>
    </table>

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

注解

ForeColor使用属性指定 Web 服务器控件的前景色。前景色通常是文本的颜色。对于除、 AdRotator HyperLink 和 LinkButton之外的所有控件，此属性将在早于 Microsoft Internet Explorer 版本 4 的Image浏览器中呈现。

注意

在不支持样式的浏览器上，此属性呈现为 FONT 元素。

适用于

另请参阅

Color

Style.ForeColor 属性

定义

属性值

示例

注解

适用于

另请参阅

反馈

其他资源