ASP.NET Tutorial/ASP.net Controls/LinkButton

Материал из .Net Framework эксперт
Перейти к: навигация, поиск

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" "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">

           <asp:ImageButton ID="imgbtnTest" 
                            runat="server" 
                            ImageUrl="images/navigation.gif" 
                            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>

   </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";
 }

}</source>


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" "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 += "
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">

   <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" />
   


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


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

   </form>

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

Источник — «http://nfex.ru/index.php?title=ASP.NET_Tutorial/ASP.net_Controls/LinkButton&oldid=3387»