Ciao ragazzi,
ho creato un banale controllo:
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 UCwithLB : System.Web.UI.UserControl
{
protected Int32 nLinks = 0;
public Int32 Links
{
get { return nLinks; }
set { nLinks = value;
ViewState["links"] = nLinks;
}
}
protected void myClick(object sender, EventArgs e)
{
((LinkButton)sender).Text += " <- THIS!!!";
}
public void MakeControl()
{
Table tb;
TableRow tr;
TableCell tc;
LinkButton lb;
if (nLinks == 0)
return;
tb = new Table();
tr = new TableRow();
for (Int32 x = 0; x < nLinks; x++)
{
tc = new TableCell();
lb = new LinkButton();
lb.Text = "Link Nr. " + ( x + 1 ).ToString().PadLeft(3, '0');
lb.Click += new EventHandler(this.myClick);
tc.Controls.Add(lb);
tr.Cells.Add(tc);
}
tb.Rows.Add(tr);
this.Controls.Add(tb);
}
protected void Page_Load(object sender, EventArgs e)
{
if (ViewState["links"] != null)
nLinks = (Int32)ViewState["links"];
this.MakeControl();
}
}
Il controllo crea un numero N di links in base alla proprietà settabile dall'esterno...
Ora ho una pagina come la seguente:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default8.aspx.cs" Inherits="Default8" %>
<%@ Register Src="UCwithLB.ascx" TagName="UCwithLB" TagPrefix="uc1" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Pagina senza titolo</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Button ID="btn1Link" runat="server" Text="Crea un link" OnClick="btn1Link_Click" />
<asp:Button ID="btn2Link" runat="server" Text="Crea due link" OnClick="btn2Link_Click" />
<asp:Button ID="btn3Link" runat="server" Text="Crea tre link" OnClick="btn3Link_Click" />
<asp:Button ID="btn4Link" runat="server" Text="Crea quattro link" OnClick="btn4Link_Click" />
</div>
<div>
<uc1:UCwithLB ID="UCwithLB1" runat="server" />
</div>
</form>
</body>
</html>
dove eseguo semplicemente questo codice:
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 Default8 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if( !Page.IsPostBack)
UCwithLB1.MakeControl();
}
protected void btn1Link_Click(object sender, EventArgs e)
{
UCwithLB1.Links = 1;
}
protected void btn2Link_Click(object sender, EventArgs e)
{
UCwithLB1.Links = 2;
}
protected void btn3Link_Click(object sender, EventArgs e)
{
UCwithLB1.Links = 3;
}
protected void btn4Link_Click(object sender, EventArgs e)
{
UCwithLB1.Links = 4;
}
}
Problema: il controllo aggiorna il suo stato non subito ma alla seconda pressione di un tasto.
Sto seguendo la strada giusta oppure ho sbagliato alla grande?
Accettasi soluzioni...
