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ASP.NET Tutorial/Page Lifecycle/Controls - История изменений
2026-04-29T21:48:00Z
История изменений этой страницы в вики
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http://nfex.ru/index.php?title=ASP.NET_Tutorial/Page_Lifecycle/Controls&diff=3224&oldid=prev
в 15:30, 26 мая 2010
2010-05-26T15:30:57Z
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<td colspan="1" style="background-color: white; color:black; text-align: center;">← Предыдущая</td>
<td colspan="1" style="background-color: white; color:black; text-align: center;">Версия 15:30, 26 мая 2010</td>
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http://nfex.ru/index.php?title=ASP.NET_Tutorial/Page_Lifecycle/Controls&diff=3225&oldid=prev
Admin: 1 версия
2010-05-26T12:00:06Z
<p>1 версия</p>
<p><b>Новая страница</b></p><div>== Add a control to a page dynamically==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="csharp"><br />
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="DynamicButton" %><br />
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"><br />
<html xmlns="http://www.w3.org/1999/xhtml" ><br />
<head runat="server"><br />
<title>Untitled Page</title><br />
</head><br />
<body><br />
<form id="form1" runat="server"><br />
<div><br />
<asp:Panel id="Panel1" runat="server" Width="364px" Height="142px"><br />
<br />
<asp:Label id=Label1 runat="server">(No value.)</asp:Label><br />
<br />
<asp:PlaceHolder id="PlaceHolder1" runat="server"></asp:PlaceHolder><br />
<asp:Button id="cmdReset" runat="server" Width="112px" Text="Reset Text" OnClick="cmdReset_Click"></asp:Button><br/><br />
<br />
<hr/><br />
</asp:Panel><br />
</div><br />
</form><br />
</body><br />
</html><br />
<br />
File: Default.aspx.cs<br />
using System;<br />
using System.Data;<br />
using System.Configuration;<br />
using System.Collections;<br />
using System.Web;<br />
using System.Web.Security;<br />
using System.Web.UI;<br />
using System.Web.UI.WebControls;<br />
using System.Web.UI.WebControls.WebParts;<br />
using System.Web.UI.HtmlControls;<br />
public partial class DynamicButton : System.Web.UI.Page<br />
{<br />
private void Page_Load(object sender, EventArgs e)<br />
{<br />
Button newButton = new Button();<br />
newButton.Text = "Dynamic Button";<br />
newButton.ID = "newButton";<br />
newButton.Click += new System.EventHandler(this.Button_Click);<br />
PlaceHolder1.Controls.Add(newButton);<br />
}<br />
protected void Button_Click(object sender, System.EventArgs e)<br />
{<br />
Label1.Text = "You clicked the dynamic button.";<br />
}<br />
protected void cmdReset_Click(object sender, System.EventArgs e)<br />
{<br />
Label1.Text = "(No value.)";<br />
}<br />
protected void cmdRemove_Click(object sender, System.EventArgs e)<br />
{<br />
Button foundButton = (Button)Page.FindControl("newButton");<br />
if (foundButton != null)<br />
{<br />
foundButton.Parent.Controls.Remove(foundButton);<br />
}<br />
}<br />
}</source><br />
<br />
<br />
<br />
== Controls.Count==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="csharp"><br />
<%@ Page Language="vb" %><br />
<html><br />
<head><br />
<title>Controls collection example</title><br />
<script runat="server"><br />
Sub Page_Load()<br />
Message.Text = "There are currently " & Controls.Count & _<br />
" controls on the page.<br/>"<br />
Dim Message2 As New Label<br />
Controls.AddAt(Controls.Count - 1, Message2)<br />
Message2.Text = "There are now " & Controls.Count & _<br />
" controls on the page."<br />
End Sub<br />
</script><br />
</head><br />
<body><br />
<asp:label id="Message" runat="server"/><br />
</body><br />
</html></source><br />
<br />
<br />
<br />
== Grab Browser Info==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="csharp"><br />
<%@ Page Language="C#" %><br />
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"><br />
<html xmlns="http://www.w3.org/1999/xhtml" ><br />
<head runat="server"><br />
<title>Grab Browser Info</title><br />
</head><br />
<body><br />
<form id="form1" runat="server"><br />
<div><br />
<asp:Button ID="Button1" runat="server" Text="I"m a Button" <br />
ie:Text="IE Button" <br />
mozilla:Text="Firefox Button" /> &nbsp;<br />
<asp:CheckBox ID="CheckBox1" runat="server" Text="I"m a CheckBox" <br />
ie:Text="IE CheckBox" <br />
mozilla:Text="Firefox CheckBox" /> &nbsp;<br />
</div><br />
</form><br />
<br />
</body><br />
</html></source><br />
<br />
<br />
<br />
== Use the input focus capability of ASP.NET 2.0 and superior==<br />
<br />
<br />
<br />
<br />
<!-- start source code --><br />
<br />
<source lang="csharp"><br />
<%@ Page language="C#" %><br />
<script runat="server"><br />
void Page_Load(object sender, EventArgs e)<br />
{<br />
if (!IsPostBack)<br />
this.SetFocus("Pswd");<br />
}<br />
</script><br />
<html xmlns="http://www.w3.org/1999/xhtml"><br />
<head runat="server"><br />
<title>Focus to the control</title><br />
</head><br />
<body><br />
<div id="pageContent"><br />
<form id="Form1" runat="server"><br />
<h1>Please, login</h1><br />
<h3>User</h3><br />
<asp:textbox runat="server" id="UserName" text="" /><br /><br />
<h3>Password</h3><br />
<asp:textbox runat="server" id="Pswd" text="" TextMode="Password" /><br /><br />
<asp:button runat="server" id="Login" text="Log in" /><br />
<hr /><br />
</form><br />
</div><br />
</body><br />
</html></source></div>
Admin