в 15:30, 26 мая 2010

2010-05-26T15:30:57Z

Admin: 1 версия

2010-05-26T12:00:11Z

1 версия

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== Read input from text field, do calculation then output to the save page (C#)==



<source lang="csharp">
File: Default.aspx

<%@ Page Language="C#" AutoEventWireup="true"
CodeFile="Default.aspx.cs" Inherits="CurrencyConverter" %>
<!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>
<title>Currency Converter</title>
</head>
<body>
<form ID="Form1" method="post" runat="server">
<div>
Convert:
<input type="text" ID="US" runat="server"/>U.S. dollars to
<select ID="Currency" runat="server" />
<br /><br />
<input type="submit" value="OK" ID="Convert" runat="server" OnServerClick="Convert_ServerClick" />
<input type="submit" value="Show Graph" ID="ShowGraph" runat="server" OnServerClick="ShowGraph_ServerClick" />
<br /><br />
<img ID="Graph" alt="Currency Graph" scr="" runat="server" />
<br /><br />
<div style="font-weight: bold" ID="Result" runat="server"></div>
</div>
</form>
</body>
</html>

File: Default.aspx.cs
using System;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
public partial class CurrencyConverter : System.Web.UI.Page
{
protected void Page_Load(Object sender, EventArgs e)
{
if (this.IsPostBack == false)
{
Currency.Items.Add(new ListItem("Euros", "0.5"));
Currency.Items.Add(new ListItem("Japanese Yen", "100"));
Currency.Items.Add(new ListItem("Canadian Dollars", "2"));
}
Graph.Visible = false;
}
protected void Convert_ServerClick(object sender, EventArgs e)
{
decimal amount;
bool success = Decimal.TryParse(US.Value, out amount);
if (success)
{
ListItem item = Currency.Items[Currency.SelectedIndex];
decimal newAmount = amount * Decimal.Parse(item.Value);
Result.InnerText = amount.ToString() + " U.S. dollars = ";
Result.InnerText += newAmount.ToString() + " " + item.Text;
}
else
{
Result.InnerText = "The number you typed in was not in the correct format. ";
Result.InnerText += "Use only numbers.";
}
}
protected void ShowGraph_ServerClick(object sender, EventArgs e)
{
Graph.Src = "Pic" + Currency.SelectedIndex.ToString() + ".png";
Graph.Visible = true;
}
}</source>

== Set value to html:textbox in page load event (VB.net)==



<source lang="csharp">
<%@ Page Language="VB" %>
<script runat="server">
sub Page_Load(Sender as object, e as EventArgs)
tbMyText.Value = "This is the page load event!"
end sub
</script>
<html><body>
<form runat="server">
<input type="text" size="25"
id="tbMyText" runat="server" />
</form>
</body></html></source>

== TextBox server changed event==



<source lang="csharp">
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="ChangeEvents" %>
<!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>Change Events</title>
</head>
<body>
<form id="form1" runat="server" >
<div>
<select runat="server"
id="List1"
size="5" multiple
Name="List1"
onserverchange="List1_ServerChange">
<option>Option 1</option>
<option>Option 2</option>
</select>
<br/>
<input type="text"
runat="server"
ID="Textbox1"
Size="10"
Name="Textbox1"
OnServerChange="Ctrl_ServerChange"><br/>
<input type="checkbox"
runat="server"
ID="Checkbox1"
Name="Checkbox1"
OnServerChange="Ctrl_ServerChange">Option text<br/>
 
<input type="submit"
runat="server"
ID="Submit1"
Name="cmdSubmit"
value="Submit Query"
onserverclick="Submit1_ServerClick">
</div>
</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 ChangeEvents : System.Web.UI.Page
{
protected void Page_Load(object sender, System.EventArgs e)
{
if (!Page.IsPostBack)
{
List1.Items.Add("Option 3");
List1.Items.Add("Option 4");
List1.Items.Add("Option 5");
}
}
protected void Ctrl_ServerChange(object sender, System.EventArgs e)
{
Response.Write("<li>ServerChange detected for " + sender + "</li>");
}
protected void List1_ServerChange(object sender, EventArgs e)
{
Response.Write("<li>ServerChange detected for List1. " + "The selected items are:</li><br/>");
foreach (ListItem li in List1.Items)
{
if (li.Selected)
Response.Write("  - " + li.Value + "<br/>");
}
}
protected void Submit1_ServerClick(object sender, EventArgs e)
{
Response.Write("<li>ServerClick detected for Submit1.</li>");
}
}</source>

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ASP.NET Tutorial/HTML Controls/Text input - История изменений

в 15:30, 26 мая 2010

Admin: 1 версия