ASP.NET Tutorial/ Controls/LinkButton

Материал из .Net Framework эксперт
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Image button, link button and button

   <source lang="csharp">

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="ButtonTest" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" ""> <html xmlns=""> <head runat="server">

   <title>Button Controls</title>

</head> <body>

   <form id="form1" runat="server">
           <asp:ImageButton ID="imgbtnTest" 
                            AlternateText="Navigation Menu"
                            OnClick="imgbtnTest_Click" />
<asp:Label ID="labMessage1" runat="server"></asp:Label> <asp:Button ID="btnTest" runat="server" Text="Click Me" OnClick="btnTest_Click" />
<asp:Label ID="labMessage2" runat="server"></asp:Label> <asp:LinkButton ID="lnkbtnTest" runat="server" OnClick="lnkbtnTest_Click"> Link to click </asp:LinkButton>
<asp:Label ID="labMessage3" runat="server"></asp:Label>

</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

   <source lang="csharp">

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.</source>

Using the LinkButton Control

   <source lang="csharp">

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

   protected void lnkSubmit_Click(object sender, EventArgs e)
       lblResults.Text = "First Name: " + txtFirstName.Text;
       lblResults.Text += "
Last Name: " + txtLastName.Text; }

</script> <html xmlns="" > <head id="Head1" runat="server">

   <title>Show LinkButton</title>

</head> <body>

   <form id="form1" runat="server">
       Text="First Name:"
       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" />

<asp:LinkButton id="lnkSubmit" Text="Submit" OnClick="lnkSubmit_Click" Runat="server" />

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

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