ASP.NET Tutorial/ASP.net Controls/HyperLink — различия между версиями

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Текущая версия на 12:00, 26 мая 2010

HyperLink: Visible, Text, ToolTip, NavigateUrl

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="HyperLinkTest" %>
<!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>HyperLink Test</title>
</head>
<body>
   <form id="form1" runat="server">
   <div id="container">
      <h1>HyperLink Test</h1>
      Use list to specify link:<br/>
      <asp:DropDownList ID="drpLinks" Runat="server" 
         AutoPostBack="True" 
         OnSelectedIndexChanged="drpLinks_SelectedIndexChanged">
         
        <asp:ListItem>Select a company</asp:ListItem>
        <asp:ListItem>adobe</asp:ListItem>
        <asp:ListItem>ibm</asp:ListItem>
        <asp:ListItem>microsoft</asp:ListItem>
      </asp:DropDownList>
      Here is a link:
         <asp:HyperLink ID="hypTest" Runat="server" />
   </div>
   </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;
public partial class HyperLinkTest : System.Web.UI.Page
{
  protected void Page_Load(object sender, System.EventArgs e)
  {
    if (drpLinks.SelectedIndex == 0)
      hypTest.Visible = false;
  }
  protected void drpLinks_SelectedIndexChanged(object sender, System.EventArgs e)
  {
    if (drpLinks.SelectedIndex > 0)
    {
      string company = drpLinks.SelectedItem.Text;
      hypTest.Visible = true;
      hypTest.Text = company;
      hypTest.ToolTip = "Go to the web site of " + company;
      hypTest.NavigateUrl = "http://www." + company + ".ru";
    }
  }
}


Using the HyperLink Control

Important properties of HyperLink control
Enabled:    disable the hyperlink.
ImageUrl:   an image for the hyperlink.
NavigateUrl:URL represented by the hyperlink.
Target:     open a new window.
Text:       label the hyperlink.
      
<%@ Page Language="C#" %>
<%@ Import Namespace="System.IO" %>
<!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()
    {
        lnkRandom.NavigateUrl = GetRandomFile();
    }
    string GetRandomFile()
    {
        string[] files = Directory.GetFiles(MapPath(Request.ApplicationPath), "*.aspx");
        Random rnd = new Random();
        string rndFile = files[rnd.Next(files.Length)];
        return Path.GetFileName(rndFile);
    }
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
    <title>Show HyperLink</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    <asp:HyperLink
        id="lnkRandom"
        Text="Random Link"
        Runat="server" />
    </div>
    </form>
</body>
</html>
Источник — «http://nfex.ru/index.php?title=ASP.NET_Tutorial/ASP.net_Controls/HyperLink&oldid=3365»