Page.IsCrossPagePostBack : Cross Page Posting « Page Lifecycle « ASP.NET Tutorial
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- Page Lifecycle
- Cross Page Posting
index.aspx
<%@ 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">
public TextBox pp_TextBox1
{
get
{
return TextBox1;
}
}
public Calendar myCalendar1
{
get
{
return Calendar1;
}
}
protected void Button1_Click (object sender, System.EventArgs e)
{
Label1.Text = "Hello " + TextBox1.Text + "<br />" +
"Date Selected: " + Calendar1.SelectedDate.ToShortDateString();
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>First Page</title>
</head>
<body>
<form id="form1" runat="server">
Enter your name:<br />
<asp:Textbox ID="TextBox1" Runat="server">
</asp:Textbox>
When do you want to fly?<br />
<asp:Calendar ID="Calendar1" Runat="server"></asp:Calendar>
<br />
<asp:Button ID="Button1" Runat="server" Text="Submit page to itself"
OnClick="Button1_Click" />
<asp:Button ID="Button2" Runat="server" Text="Submit page to NextPage.aspx"
PostBackUrl="NextPage.aspx" />
<asp:Label ID="Label1" Runat="server"></asp:Label>
</form>
</body>
</html>
File: NextPage.aspx
<%@ Page Language="C#" %>
<%@ PreviousPageType VirtualPath="Default.aspx" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<script runat="server">
protected void Page_Load(object sender, System.EventArgs e)
{
if (Page.IsCrossPagePostBack) {
Label1.Text = "Hello " + PreviousPage.myTextbox1.Text + "<br />" +
"Date Selected: " +
PreviousPage.myCalendar1.SelectedDate.ToShortDateString();
}
else
{
Response.Redirect("Default.aspx");
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>Second Page</title>
</head>
<body>
<form id="form1" runat="server">
<asp:Label ID="Label1" Runat="server"></asp:Label>
</form>
</body>
</html>