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

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Текущая версия на 12:00, 26 мая 2010

Image button, link button and button

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="ButtonTest" %>
<!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>Button Controls</title>
</head>
<body>
    <form id="form1" runat="server">
        <div id="container">
            <asp:ImageButton ID="imgbtnTest" 
                             runat="server" 
                             ImageUrl="images/navigation.gif" 
                             AlternateText="Navigation Menu"
                             OnClick="imgbtnTest_Click" /><br />
            <asp:Label ID="labMessage1" runat="server"></asp:Label>
            <asp:Button ID="btnTest" 
                        runat="server" 
                        Text="Click Me" 
                        OnClick="btnTest_Click" /><br />
            <asp:Label ID="labMessage2" runat="server"></asp:Label>
            <asp:LinkButton ID="lnkbtnTest" 
                            runat="server" 
                            OnClick="lnkbtnTest_Click">
                          Link to click
            </asp:LinkButton><br />
            <asp:Label ID="labMessage3" runat="server"></asp:Label>
        </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 ButtonTest : System.Web.UI.Page
{
  protected void imgbtnTest_Click(object sender, ImageClickEventArgs e)
  {
    labMessage1.Text = "ImageButton Clicked Coordinates: " + e.X.ToString() + ", " + e.Y.ToString();
  }
  protected void btnTest_Click(object sender, EventArgs e)
  {
    labMessage2.Text = "Button was clicked";
  }
  protected void lnkbtnTest_Click(object sender, EventArgs e)
  {
    labMessage3.Text = "LinkButton was clicked";
  }
}


Important properties, events and methods of LinkButton control

AccessKey:         specify a key that navigates to the Button control.
CommandArgument:   specify a command argument that is passed to the Command event.
CommandName:       specify a command name that is passed to the Command event.
Enabled:           disable the LinkButton control.
OnClientClick:     specify a client-side script that executes when the LinkButton is clicked.
PostBackUrl:       post a form to a particular page.
TabIndex:          specify the tab order of the LinkButton control.
Text:              label the LinkButton control.
Focus:             set the initial form focus to the LinkButton control.
Click:             Raised when the LinkButton control is clicked.
Command:           Raised when the LinkButton control is clicked. 
                   The CommandName and CommandArgument are passed to this event.


Using the LinkButton Control

<%@ 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">
    protected void lnkSubmit_Click(object sender, EventArgs e)
    {
        lblResults.Text = "First Name: " + txtFirstName.Text;
        lblResults.Text += "<br />Last Name: " + txtLastName.Text;
    }
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
    <title>Show LinkButton</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    <asp:Label
        id="lblFirstName"
        Text="First Name:"
        AssociatedControlID="txtFirstName"
        Runat="server" />
    <br />
    <asp:TextBox
        id="txtFirstName"
        Runat="server" />
    <br /><br />
    <asp:Label
        id="lblLastName"
        Text="Last Name:"
        AssociatedControlID="txtLastName"
        Runat="server" />
    <br />
    <asp:TextBox
        id="txtLastName"
        Runat="server" />
    <br /><br />
    <asp:LinkButton
        id="lnkSubmit"
        Text="Submit"
        OnClick="lnkSubmit_Click"
        Runat="server" />
    <br /><br />
    <asp:Label
        id="lblResults"
        Runat="server" />
    </div>
    </form>
</body>
</html>
Источник — «http://nfex.ru/index.php?title=ASP.NET_Tutorial/ASP.net_Controls/LinkButton&oldid=3387»