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ASP.NET Tutorial/ASP.net Controls/Label - История изменений
2026-04-29T17:45:41Z
История изменений этой страницы в вики
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http://nfex.ru/index.php?title=ASP.NET_Tutorial/ASP.net_Controls/Label&diff=3378&oldid=prev
в 15:30, 26 мая 2010
2010-05-26T15:30:57Z
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<td colspan="1" style="background-color: white; color:black; text-align: center;">← Предыдущая</td>
<td colspan="1" style="background-color: white; color:black; text-align: center;">Версия 15:30, 26 мая 2010</td>
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http://nfex.ru/index.php?title=ASP.NET_Tutorial/ASP.net_Controls/Label&diff=3379&oldid=prev
Admin: 1 версия
2010-05-26T12:00:40Z
<p>1 версия</p>
<p><b>Новая страница</b></p><div>== Add style to asp:Label==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="csharp"><br />
<%@ Page Language="C#"%><br />
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"><br />
<html xmlns="http://www.w3.org/1999/xhtml" ><br />
<head runat="server"><br />
<title>Untitled Page</title><br />
<style rel="stylesheet" type="text/css"><br />
body<br />
{<br />
font-family: Verdana, Arial, Sans-Serif;<br />
font-size: small;<br />
}<br />
.heading1<br />
{<br />
font-weight: bold;<br />
font-size: large;<br />
color: lime;<br />
}<br />
.heading2<br />
{<br />
font-weight: bold;<br />
font-size: medium;<br />
font-style: italic;<br />
color: #C0BA72;<br />
}<br />
.blockText<br />
{<br />
padding: 10px;<br />
background-color: #FFFFD9;<br />
border-style: solid;<br />
border-width: thin;<br />
}<br />
<br />
<br />
</style><br />
</head><br />
<body><br />
<form id="form1" runat="server"><br />
<div><br />
<asp:Label CssClass="heading1" ID="Label1" runat="server" Text="This Label Uses heading1"></asp:Label><br />
<br /><br />
This is sample unformatted text.<br /><br />
&nbsp;<br /><br />
<asp:Label CssClass="heading2" ID="Label2" runat="server" Text="This Label Uses heading2"></asp:Label><br />
<br /><br />
Here"s more unformatted text.<br /><br />
<br /><br />
&nbsp;<div class="blockText" id="DIV1" runat="server" ><br />
This control uses the blockText style. This control uses the blockText style. This<br />
control uses the blockText style. This control uses the blockText style.<br />
</div><br />
</div> <br />
</form><br />
</body><br />
</html></source><br />
<br />
<br />
<br />
== Change asp:Label Text in page load event listener (VB.net)==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="csharp"><br />
<%@ Page Language="VB" %><br />
<script runat="server"><br />
sub Page_Load(obj as object, e as eventargs)<br />
lblMessage.Text = "This is my first exercise!"<br />
end sub <br />
</script><br />
<html><body><br />
<asp:Label id="lblMessage" runat="server"/><br />
</body></html></source><br />
<br />
<br />
<br />
== Format a Label with CSS==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="csharp"><br />
<%@ Page Language="C#" %><br />
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"<br />
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><br />
<html xmlns="http://www.w3.org/1999/xhtml" ><br />
<head id="Head1" runat="server"><br />
<style type="text/css"><br />
div<br />
{<br />
padding:10px;<br />
}<br />
.labelStyle<br />
{<br />
color:red;<br />
background-color:yellow;<br />
border:Solid 2px Red;<br />
}<br />
</style><br />
<title>Format Label</title><br />
</head><br />
<body><br />
<form id="form1" runat="server"><br />
<div><br />
<asp:Label<br />
id="lblFirst"<br />
Text="First Label"<br />
ForeColor="Red"<br />
BackColor="Yellow"<br />
BorderStyle="Solid"<br />
BorderWidth="2"<br />
BorderColor="red"<br />
Runat="server" /><br />
<br /><br />
<asp:Label<br />
id="lblSecond"<br />
Text="Second Label"<br />
CssClass="labelStyle"<br />
Runat="server" /><br />
</div><br />
</form><br />
</body><br />
</html></source><br />
<br />
<br />
<br />
== Highlight with regular expression==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="csharp"><br />
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="Highlighting" %><br />
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><br />
<html xmlns="http://www.w3.org/1999/xhtml"><br />
<head runat="server"><br />
<title>Sample Search Highlighting</title><br />
<style type="text/css"><br />
.myPanel { margin: 8pt; width: 50%; padding 10pt; }<br />
body { font-family: Tahoma, Arial; font-size: 10pt;}<br />
</style><br />
</head><br />
<body><br />
<form id="form1" runat="server"><br />
<asp:Panel ID="panSearch" runat="server" GroupingText="Search" CssClass="myPanel"><br />
Enter Search expression:<br />
<asp:TextBox ID="txtSearch" runat="server"></asp:TextBox><br /><br />
<asp:Button ID="btnSearch" runat="server" OnClick="btnSearch_Click" Text="Search" /><br />
</asp:Panel><br />
<asp:Panel ID="panContent" runat="server" GroupingText="Content" CssClass="myPanel"><br />
<asp:Label ID="labContent" runat="server" /><br />
</asp:Panel><br />
</form><br />
</body><br />
</html><br />
File: Default.aspx.cs<br />
using System;<br />
using System.Data;<br />
using System.Configuration;<br />
using System.Collections;<br />
using System.Web;<br />
using System.Web.Security;<br />
using System.Web.UI;<br />
using System.Web.UI.WebControls;<br />
using System.Web.UI.WebControls.WebParts;<br />
using System.Web.UI.HtmlControls;<br />
<br />
using System.Text.RegularExpressions;<br />
public partial class Highlighting : System.Web.UI.Page<br />
{<br />
protected void Page_Load(object sender, EventArgs e)<br />
{<br />
labContent.Text = "Client-side validation is useful because it reduces round-trips to the server. This provides immediate feedback to the user as well as improves server performance. Unfortunately, client-side validation by itself is not sufficient. The user could be using a browser that does not support scripting (that is, using an ancient browser or has scripting turned off via the browser preferences). As well, client-side scripting is potentially vulnerable to script exploits. These can happen when a malicious user enters a javascript &lt;script&gt; block into a text field that can later cause harm when the entered data is echoed back to the browser.";<br />
}<br />
protected void btnSearch_Click(object sender, EventArgs e)<br />
{<br />
Regex myreg = new Regex(txtSearch.Text, RegexOptions.IgnoreCase);<br />
labContent.Text = myreg.Replace(labContent.Text, new MatchEvaluator(ReplaceSearchWord));<br />
}<br />
public string ReplaceSearchWord(Match m)<br />
{<br />
return "<span style="font-weight:bold; background: yellow;">" + m.Value + "</span>";<br />
}<br />
}</source><br />
<br />
<br />
<br />
== Import properties of The Label control==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="csharp"><br />
BackColor: change the background color of the label.<br />
BorderColor: set the color of a border rendered around the label.<br />
BorderStyle: display a border around the label. Possible values are NotSet, None, Dotted, Dashed, Solid, Double, Groove, Ridge, Inset, and Outset.<br />
BorderWidth: set the size of a border rendered around the label.<br />
CssClass: associate a Cascading Style Sheet class with the label.<br />
Font: set the label"s font properties.<br />
ForeColor: set the color of the content rendered by the label.<br />
Style: assign style attributes to the label.<br />
ToolTip: set a label"s title attribute. (In Microsoft Internet Explorer, the title attribute is displayed as a floating tooltip.)<br />
<br />
<br />
<%@ Page Language="C#" %><br />
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"<br />
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><br />
<script runat="server"><br />
void Page_Load()<br />
{<br />
lblTime.Text = DateTime.Now.ToString("T");<br />
}<br />
</script><br />
<html xmlns="http://www.w3.org/1999/xhtml" ><br />
<head id="Head1" runat="server"><br />
<title>Show Label</title><br />
</head><br />
<body><br />
<form id="form1" runat="server"><br />
<div><br />
<asp:Label<br />
id="lblTime"<br />
Runat="server" /><br />
</div><br />
</form><br />
</body><br />
</html></source><br />
<br />
<br />
<br />
== Label controls are used to label the two TextBox controls.==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="csharp"><br />
<%@ Page Language="C#" %><br />
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"<br />
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><br />
<html xmlns="http://www.w3.org/1999/xhtml" ><br />
<head id="Head1" runat="server"><br />
<title>Label Form</title><br />
</head><br />
<body><br />
<form id="form1" runat="server"><br />
<div><br />
<asp:Label<br />
id="lblFirstName"<br />
Text="First Name:"<br />
AssociatedControlID="txtFirstName"<br />
Runat="server" /><br />
<br /><br />
<asp:TextBox<br />
id="txtFirstName"<br />
Runat="server" /><br />
<br /><br /><br />
<asp:Label<br />
id="lblLastName"<br />
Text="Last Name:"<br />
AssociatedControlID="txtLastName"<br />
Runat="server" /><br />
<br /><br />
<asp:TextBox<br />
id="txtLastName"<br />
Runat="server" /><br />
</div><br />
</form><br />
</body><br />
</html></source><br />
<br />
<br />
<br />
== Label font==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="csharp"><br />
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %><br />
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"><br />
<html xmlns="http://www.w3.org/1999/xhtml" ><br />
<head id="Head1" runat="server"><br />
<title>ASP.NET Server Controls - Basics</title><br />
</head><br />
<body><br />
<form id="form1" runat="server"><br />
<div><br />
<h1>ASP.NET Server Controls</h1><br />
<h2>Basics</h2><br />
<asp:Label ID="lblTime" runat="server" OnInit="lblTime_Init"></asp:Label><br />
</div><br />
</form><br />
</body><br />
</html><br />
File: Default.aspx.cs<br />
using System;<br />
using System.Data;<br />
using System.Configuration;<br />
using System.Web;<br />
using System.Web.Security;<br />
using System.Web.UI;<br />
using System.Web.UI.WebControls;<br />
using System.Web.UI.WebControls.WebParts;<br />
using System.Web.UI.HtmlControls;<br />
public partial class _Default : System.Web.UI.Page <br />
{<br />
protected void lblTime_Init(object sender, EventArgs e)<br />
{<br />
lblTime.Font.Name = "Verdana";<br />
lblTime.Font.Size = 20;<br />
lblTime.Font.Underline = true;<br />
lblTime.Font.Bold = true;<br />
lblTime.Font.Italic = true;<br />
lblTime.Font.Overline = true;<br />
lblTime.Font.Strikeout = true;<br />
lblTime.Text = DateTime.Now.ToString() + ". Font Name: " + lblTime.Font.Name;<br />
}<br />
}</source><br />
<br />
<br />
<br />
== Label hot key==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="csharp"><br />
<%@ Page Language="C#" %><br />
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"><br />
<html xmlns="http://www.w3.org/1999/xhtml" ><br />
<head runat="server"><br />
<title>Label HotKeys</title><br />
</head><br />
<body><br />
<form id="form1" runat="server"><br />
<div id="container"><br />
<h1>Using AccessKey for Controls</h1><br />
<asp:Label ID="labName" runat="server" <br />
AccessKey="N" AssociatedControlID="txtName" Text="<u>N</u>ame"></asp:Label><br />
<asp:TextBox ID="txtName" runat="server"></asp:TextBox><br /><br />
<asp:Label ID="labMonth" runat="server" <br />
AccessKey="M" AssociatedControlID="drpMonth" Text="<u>M</u>onth"></asp:Label><br />
<asp:DropDownList ID="drpMonth" runat="server"><br />
<asp:ListItem>January</asp:ListItem><br />
<asp:ListItem>February</asp:ListItem><br />
<asp:ListItem>March</asp:ListItem><br />
</asp:DropDownList><br />
</div><br />
</form><br />
</body><br />
</html></source><br />
<br />
<br />
<br />
== Set Label through code (VB)==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="csharp"><br />
Page Language = "VB"<br />
<%@ Page Language="VB" %><br />
<script runat="server"><br />
sub Page_Load(obj as object, e as eventargs)<br />
lblMessage.Text = "Welcome to ASP.NET!"<br />
end sub <br />
</script><br />
<html><br />
<body><br />
<asp:Label id="lblMessage" runat="server"/><br />
</body><br />
</html></source><br />
<br />
<br />
<br />
== Set text to Label (C#)==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="csharp"><br />
Page Language="C#"<br />
<%@ Page Language="C#" %><br />
<script runat="server"><br />
void Page_Load(Object obj, EventArgs e) {<br />
lblMessage.Text = "Welcome to ASP.NET!";<br />
}<br />
</script><br />
<html><body><br />
<asp:Label id="lblMessage" runat="server"/><br />
</body></html></source><br />
<br />
<br />
<br />
== Use asp:Label to display text message (VB.net)==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="csharp"><br />
<%@ Page Language="VB" %><br />
<script runat="server"><br />
sub Page_Load(obj as object, e as eventargs)<br />
lblMessage.Text = "This is my first exercise!"<br />
end sub <br />
</script><br />
<html><body><br />
<asp:Label id="lblMessage" runat="server"/><br />
</body></html></source><br />
<br />
<br />
<br />
== Use of AssociatedControlID property on labels to bind a particular label to an input control==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="csharp"><br />
<%@ Page language="C#" %><br />
<br />
<html xmlns="http://www.w3.org/1999/xhtml"><br />
<head runat="server"><br />
<title>Label For</title><br />
</head><br />
<body><br />
<div id="pageContent"><br />
<form runat="server" id="MainForm"><br />
<asp:Label ID="Label1" runat="server" Text="This label has no associated control"></asp:Label><br />
<asp:TextBox ID="TextBox1" runat="server" /><br />
<br /><br />
<asp:Label ID="Label2" runat="server" Text="This label is associated with the textbox"<br />
AssociatedControlID="TextBox2"></asp:Label><br />
<asp:TextBox ID="TextBox2" runat="server" /><br />
</form><br />
</div><br />
</body><br />
</html></source><br />
<br />
<br />
<br />
== Using the Label server control to provide hot-key functionality==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="csharp"><br />
<%@ Page Language="C#" %><br />
<html xmlns="http://www.w3.org/1999/xhtml" ><br />
<head id="Head1" runat="server"><br />
<title>Label Server Control</title><br />
</head><br />
<body><br />
<form id="form1" runat="server"><br />
<asp:Label ID="Label1" <br />
Runat="server" <br />
AccessKey="N" <br />
AssociatedControlID="Textbox1">User<u>n</u>ame<br />
</asp:Label><br />
<asp:Textbox ID="TextBox1" Runat="server"></asp:Textbox><br />
<asp:Label ID="Label2" <br />
Runat="server" <br />
AccessKey="P" <br />
AssociatedControlID="Textbox2"><u>P</u>assword<br />
</asp:Label><br />
<asp:Textbox ID="TextBox2" Runat="server"></asp:Textbox><br />
<asp:Button ID="Button1" Runat="server" Text="Submit" /><br />
</form><br />
</body><br />
</html></source></div>
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