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Cross-Page Posting Example

Monday, March 26, 2007 - by Site Editor

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So many years ago, while studying with ASP 3.0, it was very diffucult to receive form pastings from another ASP page even it used to do with ASP:NET 1.x. But .NET 2.0 comes with some new feature line Cross-Page Posting. So what's cross-page posting: clients can post values from one page to another and another ASP.NET page can easily take response.

To understand this feature let's write a sample code:

Default.aspx

<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default.aspx.vb" Inherits="_Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<title>Cross-Page Posting</title>

</head>

<body>

<div>

<br />

 <asp:Label ID="Label1" runat="server"></asp:Label><br />

<asp:Calendar ID="Calendar1" runat="server"></asp:Calendar>

</div>

<asp:Button ID="Button1" runat="server" Text="Post Back Page itself" />

<asp:Button ID="Button2" runat="server" Text="Post Back Page Another Page" PostBackUrl="~/Default2.aspx" />

</form>

</body>

</html>

Default2.aspx

<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default2.aspx.vb" Inherits="Default2" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<title>Untitled Page</title>

</head>

<body>

<div>

<asp:Label ID="Label1" runat="server"></asp:Label></div>

</form>

</body>

</html>

Default2.aspx.vb - Code Behind File

Partial Class Default2

Inherits System.Web.UI.Page

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

Dim pp_Calendar1 As Calendar

pp_Calendar1 = CType(PreviousPage.FindControl("Calendar1"), Calendar)

Label1.Text = pp_Calendar1.SelectedDate.ToString

End Sub

End Class

As you've seen that, .NET 2.0 can easily handle and trace form post. In early days of web development, it was very diffucult to trace form post.

Happy Coding

Title:	Cross-Page Posting Example
Submit Date:	Monday, March 26, 2007
Last viewed at:	Saturday, July 31, 2010
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