Содержание

1 Add style to asp:Label
2 Change asp:Label Text in page load event listener (VB.net)
3 Format a Label with CSS
4 Highlight with regular expression
5 Import properties of The Label control
6 Label controls are used to label the two TextBox controls.
7 Label font
8 ASP.NET Server Controls
- 8.1 Basics
- 8.2 Label hot key
9 Using AccessKey for Controls

Add style to asp:Label

   <source lang="csharp">

<%@ Page Language="C#"%> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server">

   <title>Untitled Page</title>
   <style rel="stylesheet" type="text/css">

body {

 font-family: Verdana, Arial, Sans-Serif;
 font-size: small;

} .heading1 {

 font-weight: bold;
 font-size: large;
 color: lime;

} .heading2 {

 font-weight: bold;
 font-size: medium;
 font-style: italic;
 color: #C0BA72;

} .blockText {

 padding: 10px;
 background-color: #FFFFD9;
 border-style: solid;
 border-width: thin;

}

   </style>

</head> <body>

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

       <asp:Label CssClass="heading1" ID="Label1" runat="server" Text="This Label Uses heading1"></asp:Label>
       

       This is sample unformatted text.

        

       <asp:Label CssClass="heading2" ID="Label2" runat="server" Text="This Label Uses heading2"></asp:Label>
       

       Here"s more unformatted text.

           This control uses the blockText style. This control uses the blockText style. This
           control uses the blockText style. This control uses the blockText style.

   </form>

</body> </html></source>

Change asp:Label Text in page load event listener (VB.net)

   <source lang="csharp">

<%@ Page Language="VB" %> <script runat="server">

  sub Page_Load(obj as object, e as eventargs)
     lblMessage.Text = "This is my first exercise!"
  end sub

</script> <html><body>

  <asp:Label id="lblMessage" runat="server"/>

</body></html></source>

Format a Label with CSS

   <source lang="csharp">

<%@ Page Language="C#" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"

 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

   <style type="text/css">
       div
       {
           padding:10px;
       }
       .labelStyle
       {
           color:red;
           background-color:yellow;
           border:Solid 2px Red;
       }
   </style>
   <title>Format Label</title>

</head> <body>

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

   <asp:Label
       id="lblFirst"
       Text="First Label"
       ForeColor="Red"
       BackColor="Yellow"
       BorderStyle="Solid"
       BorderWidth="2"
       BorderColor="red"
       Runat="server" />
   

   <asp:Label
       id="lblSecond"
       Text="Second Label"
       CssClass="labelStyle"
       Runat="server" />

   </form>

</body> </html></source>

Highlight with regular expression

   <source lang="csharp">

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="Highlighting" %> <!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>Sample Search Highlighting</title>
  <style type="text/css">
     .myPanel { margin: 8pt; width: 50%; padding 10pt;  }
     body { font-family: Tahoma, Arial; font-size: 10pt;}
   </style>

</head> <body>

  <form id="form1" runat="server">
     <asp:Panel ID="panSearch" runat="server" GroupingText="Search" CssClass="myPanel">
        Enter Search expression:
        <asp:TextBox ID="txtSearch" runat="server"></asp:TextBox>

        <asp:Button ID="btnSearch" runat="server" OnClick="btnSearch_Click" Text="Search" />
     </asp:Panel>
     <asp:Panel ID="panContent" runat="server" GroupingText="Content" CssClass="myPanel">
        <asp:Label ID="labContent" runat="server" />
     </asp:Panel>
  </form>

</body> </html> File: Default.aspx.cs using System; using System.Data; using System.Configuration; using System.Collections; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls;

using System.Text.RegularExpressions; public partial class Highlighting : System.Web.UI.Page {

   protected void Page_Load(object sender, EventArgs e)
   {
      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 <script> block into a text field that can later cause harm when the entered data is echoed back to the browser.";
   }
  protected void btnSearch_Click(object sender, EventArgs e)
  {
     Regex myreg = new Regex(txtSearch.Text, RegexOptions.IgnoreCase);
     labContent.Text = myreg.Replace(labContent.Text, new MatchEvaluator(ReplaceSearchWord));
  }
  public string ReplaceSearchWord(Match m)
  {
     return "" + m.Value + "";
  }

}</source>

Import properties of The Label control

   <source lang="csharp">

BackColor: change the background color of the label. BorderColor: set the color of a border rendered around the label. BorderStyle: display a border around the label. Possible values are NotSet, None, Dotted, Dashed, Solid, Double, Groove, Ridge, Inset, and Outset. BorderWidth: set the size of a border rendered around the label. CssClass: associate a Cascading Style Sheet class with the label. Font: set the label"s font properties. ForeColor: set the color of the content rendered by the label. Style: assign style attributes to the label. ToolTip: set a label"s title attribute. (In Microsoft Internet Explorer, the title attribute is displayed as a floating tooltip.)

<%@ 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">

   void Page_Load()
   {
       lblTime.Text = DateTime.Now.ToString("T");
   }

</script> <html xmlns="http://www.w3.org/1999/xhtml" > <head id="Head1" runat="server">

   <title>Show Label</title>

</head> <body>

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

   <asp:Label
       id="lblTime"
       Runat="server" />

   </form>

</body> </html></source>

Label controls are used to label the two TextBox controls.

   <source lang="csharp">

<%@ 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 id="Head1" runat="server">

   <title>Label Form</title>

</head> <body>

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

   <asp:Label
       id="lblFirstName"
       Text="First Name:"
       AssociatedControlID="txtFirstName"
       Runat="server" />
   

   <asp:TextBox
       id="txtFirstName"
       Runat="server" />
   


   <asp:Label
       id="lblLastName"
       Text="Last Name:"
       AssociatedControlID="txtLastName"
       Runat="server" />
   

   <asp:TextBox
       id="txtLastName"
       Runat="server" />

   </form>

</body> </html></source>

Label font

   <source lang="csharp">

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head id="Head1" runat="server">

   <title>ASP.NET Server Controls - Basics</title>

</head> <body>

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

ASP.NET Server Controls

Basics

    <asp:Label ID="lblTime" runat="server" OnInit="lblTime_Init"></asp:Label>

   </form>

</body> </html> File: Default.aspx.cs using System; using System.Data; using System.Configuration; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; public partial class _Default : System.Web.UI.Page {

  protected void lblTime_Init(object sender, EventArgs e)
  {
     lblTime.Font.Name = "Verdana";
     lblTime.Font.Size = 20;
     lblTime.Font.Underline = true;
     lblTime.Font.Bold = true;
     lblTime.Font.Italic = true;
     lblTime.Font.Overline = true;
     lblTime.Font.Strikeout = true;
     lblTime.Text = DateTime.Now.ToString() + ". Font Name: " + lblTime.Font.Name;
  }

}</source>

Label hot key

   <source lang="csharp">

<%@ Page Language="C#" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server">

   <title>Label HotKeys</title>

</head> <body>

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

Using AccessKey for Controls

   <asp:Label ID="labName" runat="server" 
        AccessKey="N" AssociatedControlID="txtName" Text="Name"></asp:Label>
   <asp:TextBox ID="txtName" runat="server"></asp:TextBox>

       <asp:Label ID="labMonth" runat="server" 
        AccessKey="M" AssociatedControlID="drpMonth" Text="Month"></asp:Label>
   <asp:DropDownList ID="drpMonth" runat="server">
       <asp:ListItem>January</asp:ListItem>
       <asp:ListItem>February</asp:ListItem>
        <asp:ListItem>March</asp:ListItem>
   </asp:DropDownList>

   </form>

</body> </html></source>

Set Label through code (VB)

   <source lang="csharp">

Page Language = "VB" <%@ Page Language="VB" %> <script runat="server">

  sub Page_Load(obj as object, e as eventargs)
     lblMessage.Text = "Welcome to ASP.NET!"
  end sub

</script> <html>

 <body>
   <asp:Label id="lblMessage" runat="server"/>
 </body>

</html></source>

Set text to Label (C#)

   <source lang="csharp">

Page Language="C#" <%@ Page Language="C#" %> <script runat="server">

  void Page_Load(Object obj, EventArgs e) {
     lblMessage.Text = "Welcome to ASP.NET!";
  }

</script> <html><body>

  <asp:Label id="lblMessage" runat="server"/>

</body></html></source>

Use asp:Label to display text message (VB.net)

   <source lang="csharp">

<%@ Page Language="VB" %> <script runat="server">

  sub Page_Load(obj as object, e as eventargs)
     lblMessage.Text = "This is my first exercise!"
  end sub

</script> <html><body>

  <asp:Label id="lblMessage" runat="server"/>

</body></html></source>

Use of AssociatedControlID property on labels to bind a particular label to an input control

   <source lang="csharp">

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

   <title>Label For</title>

</head> <body>

       <form runat="server" id="MainForm">
           <asp:Label ID="Label1" runat="server" Text="This label has no associated control"></asp:Label>
           <asp:TextBox ID="TextBox1" runat="server" />
           

           <asp:Label ID="Label2" runat="server" Text="This label is associated with the textbox"
                AssociatedControlID="TextBox2"></asp:Label>
           <asp:TextBox ID="TextBox2" runat="server" />
       </form>

</body> </html></source>

Using the Label server control to provide hot-key functionality

   <source lang="csharp">

<%@ Page Language="C#" %> <html xmlns="http://www.w3.org/1999/xhtml" > <head id="Head1" runat="server">

   <title>Label Server Control</title>

</head> <body>

   <form id="form1" runat="server">
           <asp:Label ID="Label1" 
                      Runat="server" 
                      AccessKey="N" 
                      AssociatedControlID="Textbox1">Username
           </asp:Label>
           <asp:Textbox ID="TextBox1" Runat="server"></asp:Textbox>
           <asp:Label ID="Label2" 
                      Runat="server" 
                      AccessKey="P" 
                      AssociatedControlID="Textbox2">Password
           </asp:Label>
           <asp:Textbox ID="TextBox2" Runat="server"></asp:Textbox>
           <asp:Button ID="Button1" Runat="server" Text="Submit" />
   </form>

</body> </html></source>

ASP.NET Tutorial/ASP.net Controls/Label

Содержание

Add style to asp:Label

Change asp:Label Text in page load event listener (VB.net)

Format a Label with CSS

Highlight with regular expression

Import properties of The Label control

Label controls are used to label the two TextBox controls.

Label font

ASP.NET Server Controls

Basics

Label hot key

Using AccessKey for Controls

Set Label through code (VB)

Set text to Label (C#)

Use asp:Label to display text message (VB.net)

Use of AssociatedControlID property on labels to bind a particular label to an input control

Using the Label server control to provide hot-key functionality

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