WebControl.BorderWidth WebControl.BorderWidth WebControl.BorderWidth WebControl.BorderWidth Property

Определение

Возвращает или задает ширину границы серверного веб-элемента управления.Gets or sets the border width of the Web server control.

public:
 virtual property System::Web::UI::WebControls::Unit BorderWidth { System::Web::UI::WebControls::Unit get(); void set(System::Web::UI::WebControls::Unit value); };
[System.ComponentModel.Bindable(true)]
public virtual System.Web.UI.WebControls.Unit BorderWidth { get; set; }
member this.BorderWidth : System.Web.UI.WebControls.Unit with get, set
Public Overridable Property BorderWidth As Unit

Значение свойства

Объект Unit, представляющий ширину границы серверного веб-элемента управления.A Unit that represents the border width of a Web server control. Значение по умолчанию равно Empty и показывает, что значение свойства не задано.The default value is Empty, which indicates that this property is not set.

Исключения

Указанная ширина границы является отрицательной величиной.The specified border width is a negative value.

Примеры

В следующем примере показано, как задать BorderWidth свойство Table WebControl элемента управления, унаследованное от базового класса.The following example illustrates how to set the BorderWidth property of the Table control, inherited from the WebControl base class.

<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
    <title>Table Property</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <h3>Property of a Table Web Control</h3>
 
        <asp:Table id="Table1" runat="server"
            CellPadding = "10" 
            CellSpacing="0"
            GridLines="Both"
            BorderColor="Red"
            BorderWidth="3">

            <asp:TableRow>
                <asp:TableCell>
                    Row 0, Col 0
                </asp:TableCell>
                <asp:TableCell>
                    Row 0, Col 1
                </asp:TableCell>
            </asp:TableRow>

            <asp:TableRow>
                <asp:TableCell>
                    Row 1, Col 0
                </asp:TableCell>
                <asp:TableCell>
                    Row 1, Col 1
                </asp:TableCell>
            </asp:TableRow>
        </asp:Table>
    </div>
    </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">

<script runat="server">
</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
    <title>Table Property</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <h3>Property of a Table Web Control</h3>
 
        <asp:Table id="Table1" runat="server"
            CellPadding = "10" 
            CellSpacing="0"
            GridLines="Both"
            BorderColor="Red"
            BorderWidth="3">

            <asp:TableRow>
                <asp:TableCell>
                    Row 0, Col 0
                </asp:TableCell>
                <asp:TableCell>
                    Row 0, Col 1
                </asp:TableCell>
            </asp:TableRow>

            <asp:TableRow>
                <asp:TableCell>
                    Row 1, Col 0
                </asp:TableCell>
                <asp:TableCell>
                    Row 1, Col 1
                </asp:TableCell>
            </asp:TableRow>
        </asp:Table>
    </div>
    </form>
</body>
</html>

Примечание

В следующем примере кода используется модель кода с одним файлом, и она может работать неправильно, если копировать их непосредственно в файл кода программной части.The following code sample uses the single-file code model and may not work correctly if copied directly into a code-behind file. Этот пример кода необходимо скопировать в пустой текстовый файл с расширением. aspx.This code sample must be copied into an empty text file that has an .aspx extension. Дополнительные сведения о модели кода веб-форм см. в разделе модель кода страницы веб-форм ASP.NET.For more information on the Web Forms code model, see ASP.NET Web Forms Page Code Model.

<!-- This example demonstrates how to set property values for the
BorderColor, BorderStyle, and BorderWidth properties, and how to 
change the property values at run time. -->

<!-- This example demonstrates how to set property values for the
BorderColor, BorderStyle, and BorderWidth properties, and how to 
change the property values at run time. -->

<%@ Page language="c#" AutoEventWireup="true" %>
<%@ 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 void Page_Load(object sender, System.EventArgs e)
    {
        // Determine whether this is the first time the page is loaded;
        // if so, load the drop-down lists with data.
        if (!Page.IsPostBack)
        {
// <Snippet4>
            // Create a ListItemCollection and add names of colors.
            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);
// </Snippet4>
            // Bind the colors collection to the borderColorList.
            borderColorList.DataSource = colors;
            borderColorList.DataBind();

            // Create a ListItemCollection and the add names of 
            // the BorderStyle enumeration values.
            ListItemCollection styles = new ListItemCollection();

            foreach (string s in Enum.GetNames(typeof(BorderStyle)))
            {
                styles.Add(s);
            }

            // Bind the styles collection to the borderStyleList.
            borderStyleList.DataSource = styles;
            borderStyleList.DataBind();

            // Create a ListItemCollection and add width values
            // expressed in pixels (px).
            ListItemCollection widths = new ListItemCollection();

            for (int i = 0; i < 11; i++)
            {
                widths.Add(i.ToString() + "px");
            }

            // Bind the widths collection to the borderWidthList.
            borderWidthList.DataSource = widths;
            borderWidthList.DataBind();
        }

    }

    // This method handles the SelectedIndexChanged event for borderColorList.
    public void ChangeBorderColor(object sender, System.EventArgs e)
    {
// <Snippet5>
        // Convert the color name string to an object of type Color, 
        // and set the Color as the new border color for Label1.
        Label1.BorderColor = Color.FromName(borderColorList.SelectedItem.Text);
// </Snippet5>
    }

    // This method handles the selectedIndexChanged event for boderStyleList.
    public void ChangeBorderStyle(object sender, System.EventArgs e)
    {
// <Snippet6>
        // Convert the style name string to a BorderStyle enumeration value,
        // and set the BorderStyle as the new border style for Label1.
        Label1.BorderStyle = (BorderStyle)Enum.Parse(typeof(BorderStyle),
                              borderStyleList.SelectedItem.Text);
// </Snippet6>
    }

    // This method handles the SelectedIndexChanged event for borderWidthList.
    public void ChangeBorderWidth(object sender, System.EventArgs e)
    {
// <Snippet7>
        // Convert the border width string to a object of type Unit,
        // and set the Unit as the new border width for Label1.
        Label1.BorderWidth = Unit.Parse(borderWidthList.SelectedItem.Text);
// </Snippet7>
    }
    </script>
<html xmlns="http://www.w3.org/1999/xhtml" >
    <head>
    <title> Border Properties Example </title>
</head>

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

            <h3> Border Properties Example </h3>

            <table border="0" cellpadding="6">
                <tr>
                    <td>
                        <asp:Label Runat="server" BorderColor="Black" 
                            BorderStyle="Solid" BorderWidth="4px" ID="Label1" 
                            Text="Border Properties Example" Height="75" 
                            Width="200"><center><br />Border Properties Example
                            </center></asp:Label>
                    </td>

                    <td>
                        <asp:DropDownList Runat="server" ID="borderColorList" 
                            OnSelectedIndexChanged="ChangeBorderColor" AutoPostBack="True" 
                            EnableViewState="True"></asp:DropDownList>
                        <br />
                        <br />
                        <asp:DropDownList Runat="server" ID="borderStyleList" 
                            OnSelectedIndexChanged="ChangeBorderStyle" AutoPostBack="True" 
                            EnableViewState="True"></asp:DropDownList>
                        <br />            
                        <br />
                        <asp:DropDownList Runat="server" ID="borderWidthList" 
                            OnSelectedIndexChanged="ChangeBorderWidth" AutoPostBack="True"
                            EnableViewState="True"></asp:DropDownList>
                    </td>
                </tr>
            </table>
        </form>
    </body>
</html>
<%@ Page language="VB" AutoEventWireup="true" %>
<%@ 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 Sub Page_Load(sender As Object, e As System.EventArgs)
        ' Determine whether this is the first time the page is loaded;
        ' if so, load the drop-down lists with data.
        If Not Page.IsPostBack Then
'<Snippet4>
            ' Create a ListItemCollection and add names of colors.
            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)
'</Snippet4>
            ' Bind the colors collection to the borderColorList.
            borderColorList.DataSource = colors
            borderColorList.DataBind()

            ' Create a ListItemCollection and the add names of 
            ' the BorderStyle enumeration values.
            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

            ' Bind the styles collection to the borderStyleList.
            borderStyleList.DataSource = styles
            borderStyleList.DataBind()

            ' Create a ListItemCollection and add width values
            ' expressed in pixels (px).
            Dim widths As New ListItemCollection()

            Dim i As Integer
            For i = 0 To 10
                widths.Add(i.ToString() & "px")
            Next i

            ' Bind the widths collection to the borderWidthList.
            borderWidthList.DataSource = widths
            borderWidthList.DataBind()
        End If
    End Sub

    ' This method handles the SelectedIndexChanged event for borderColorList.
    Public Sub ChangeBorderColor(sender As Object, e As System.EventArgs)
'<Snippet5>
        ' Convert the color name string to an object of type Color, 
        ' and set the Color as the new border color for Label1.
        Label1.BorderColor = Color.FromName(borderColorList.SelectedItem.Text)
'</Snippet5>
    End Sub

    ' This method handles the selectedIndexChanged event for boderStyleList.
    Public Sub ChangeBorderStyle(sender As Object, e As System.EventArgs)
'<Snippet6>
        ' Convert the style name string to a BorderStyle enumeration value,
        ' and set the BorderStyle as the new border style for Label1.
        Dim styleType As Type = GetType(BorderStyle)
        Label1.BorderStyle = [Enum].Parse(styleType, borderStyleList.SelectedItem.Text)
'</Snippet6>
    End Sub

    ' This method handles the SelectedIndexChanged event for borderWidthList.
    Public Sub ChangeBorderWidth(sender As Object, e As System.EventArgs)
'<Snippet7>
        ' Convert the border width string to a object of type Unit,
        ' and set the Unit as the new border width for Label1.
        Label1.BorderWidth = Unit.Parse(borderWidthList.SelectedItem.Text)
'</Snippet7>
    End Sub
    </script>
<html xmlns="http://www.w3.org/1999/xhtml" >
    <head>
    <title> Border Properties Example </title>
</head>

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

            <h3> Border Properties Example </h3>

            <table border="0" cellpadding="6">
                <tr>
                    <td>
                        <asp:Label Runat="server" BorderColor="Black" 
                            BorderStyle="Solid" BorderWidth="4px" ID="Label1" 
                            Text="Border Properties Example" Height="75" 
                            Width="200"><center><br />Border Properties Example
                            </center></asp:Label>
                    </td>

                    <td>
                        <asp:DropDownList Runat="server" ID="borderColorList" 
                            OnSelectedIndexChanged="ChangeBorderColor" AutoPostBack="True" 
                            EnableViewState="True"></asp:DropDownList>
                        <br />
                        <br />
                        <asp:DropDownList Runat="server" ID="borderStyleList" 
                            OnSelectedIndexChanged="ChangeBorderStyle" AutoPostBack="True" 
                            EnableViewState="True"></asp:DropDownList>
                        <br />            
                        <br />
                        <asp:DropDownList Runat="server" ID="borderWidthList" 
                            OnSelectedIndexChanged="ChangeBorderWidth" AutoPostBack="True"
                            EnableViewState="True"></asp:DropDownList>
                    </td>
                </tr>
            </table>
        </form>
    </body>
</html>

Комментарии

BorderWidth Используйте свойство, чтобы задать ширину границы для элемента управления.Use the BorderWidth property to specify a border width for a control.

Примечание

Это свойство не работает со всеми серверными веб-элементами управления.This property does not work with all Web server controls. Он применяется только к элементам управления, отображаемым в виде таблицы, Table например DataGridи.It applies only to controls that display as a table, such as Table and DataGrid.

Это свойство задается с Unit помощью объекта.This property is set with a Unit object. Value Если свойствоUnit объекта содержит отрицательное число, возникает исключение.If the Value property of the Unit contains a negative number, an exception is thrown.

Примечание

Ширина границы может быть выражена только в пикселях для браузеров, предшествующих Microsoft Internet Explorer версии 5.The border width can be expressed only in pixels for browsers earlier than Microsoft Internet Explorer version 5. В Microsoft Internet Explorer версии 5 и более поздних поддерживаются все типы единиц.All unit types are supported in Microsoft Internet Explorer version 5 and later. Дополнительные сведения см. в определенном элементе управления.Refer to the specific control for details.

Применяется к

Дополнительно