ASP.NET Tutorial/ASP.net Controls/LinkButton — различия между версиями
Admin (обсуждение | вклад) м (1 версия) |
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(нет различий)
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Текущая версия на 15:00, 26 мая 2010
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>