ASP.Net/Page/Between Pages
Deal with previous page in VB.net
<source lang="csharp">
<%@ Page Language="VB" %> <html xmlns="http://www.w3.org/1999/xhtml" > <head id="Head1" runat="server">
<title>Button Search</title>
</head> <body>
<form id="form1" runat="server">
<asp:Label
id="lblSearch"
Text="Search:"
Runat="server" />
<asp:TextBox
id="txtSearch"
Runat="server" />
<asp:Button
id="btnSearch"
Text="Go!"
PostBackUrl="ButtonSearchResultsVB.aspx"
Runat="server" />
</form>
</body> </html>
<%-- <%@ Page Language="VB" %> <script runat="server">
Sub Page_Load()
If Not IsNothing(PreviousPage) Then
Dim txtSearch As TextBox = CType(PreviousPage.FindControl("txtSearch"), TextBox)
lblSearch.Text = String.Format("Search For: {0}", txtSearch.Text)
End If
End Sub
</script> <html> <head id="Head1" runat="server">
<title>Button Search Results</title>
</head> <body>
<form id="form1" runat="server">
<asp:Label
id="lblSearch"
Runat="server" />
</form>
</body> </html>
--%>
</source>
Get control from Previous page (C#)
<source lang="csharp">
<%@ Page Language="C#" %> <html> <head id="Head1" runat="server">
<title>Button Search</title>
</head> <body>
<form id="form1" runat="server">
<asp:Label
id="lblSearch"
Text="Search:"
Runat="server" />
<asp:TextBox
id="txtSearch"
Runat="server" />
<asp:Button
id="btnSearch"
Text="Go!"
PostBackUrl="ButtonSearchResults.aspx"
Runat="server" />
</form>
</body> </html>
<%-- <%@ Page Language="C#" %> <script runat="server">
void Page_Load()
{
if (PreviousPage != null)
{
TextBox txtSearch = (TextBox)PreviousPage.FindControl("txtSearch");
lblSearch.Text = String.Format("Search For: {0}", txtSearch.Text);
}
}
</script> <html> <head>
<title>Button Search Results</title>
</head> <body>
<form id="form1" runat="server">
<asp:Label
id="lblSearch"
Runat="server" />
</form>
</body> </html> --%>
</source>
Pass session variable between pages (C#)
<source lang="csharp">
<%@ Page language="c#" src="Cookieless1.aspx.cs" AutoEventWireup="false" Inherits="Cookieless1" %> <HTML>
<body>
<form id="Form1" method="post" runat="server">
<asp:HyperLink id="lnkRedirect" style="Z-INDEX: 100; LEFT: 31px; POSITION: absolute; TOP: 32px" runat="server" Width="296px" Height="32px" NavigateUrl="Cookieless2.aspx">Go to Cookieless2 using a HyperLink control</asp:HyperLink>
<asp:Button id="cmdLinkAbsolute" style="Z-INDEX: 104; LEFT: 32px; POSITION: absolute; TOP: 180px" runat="server" Width="264px" Text="Go to Cookieless2 using an absolute path"></asp:Button>
<asp:Button id="cmdLink" style="Z-INDEX: 102; LEFT: 32px; POSITION: absolute; TOP: 104px" runat="server" Width="264px" Text="Go to Cookieless2 using a relative path"></asp:Button>
<asp:Label id="lblInfo" style="Z-INDEX: 103; LEFT: 348px; POSITION: absolute; TOP: 32px" runat="server" Width="292px" Height="188px" Font-Names="Verdana" Font-Size="X-Small">Hyperlink.NavigateUrl is set to
"Cookieless1.aspx" in code.
The relative path uses
Response.Redirect("Cookieless1.aspx")
The absoulte path uses
Response.Redirect(MapPath("Cookieless2.aspx"))</asp:Label>
</form>
</body>
</HTML>
<%-- Cookieless1.aspx.cs using System; using System.Collections; using System.ruponentModel; using System.Data; using System.Drawing; using System.Web; using System.Web.SessionState; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.HtmlControls;
public class Cookieless1 : System.Web.UI.Page
{
protected System.Web.UI.WebControls.HyperLink lnkRedirect;
protected System.Web.UI.WebControls.Button cmdLinkAbsolute;
protected System.Web.UI.WebControls.Button cmdLink;
protected System.Web.UI.WebControls.Label lblInfo;
private void Page_Load(object sender, System.EventArgs e)
{
Session["test"] = "Test String";
}
#region Web Form Designer generated code
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: This call is required by the ASP.NET Web Form Designer.
//
InitializeComponent();
base.OnInit(e);
}
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.cmdLinkAbsolute.Click += new System.EventHandler(this.cmdLinkAbsolute_Click);
this.cmdLink.Click += new System.EventHandler(this.cmdLink_Click);
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
private void cmdLink_Click(object sender, System.EventArgs e)
{
Response.Redirect("Cookieless2.aspx");
}
private void cmdLinkAbsolute_Click(object sender, System.EventArgs e)
{
string url;
url = "http://www.nfex.ru/Cookieless2.aspx";
Response.Redirect(url);
}
}
--%> <%-- Cookieless2.aspx <%@ Page language="c#" src="Cookieless2.aspx.cs" AutoEventWireup="false" Inherits="Cookieless2" %> <HTML>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
<asp:Label id="lblInfo" style="Z-INDEX: 101; LEFT: 30px; POSITION: absolute; TOP: 27px" runat="server" Width="576px" Height="160px" Font-Bold="True" Font-Names="Verdana" Font-Size="Large"></asp:Label>
</form>
</body>
</HTML> --%> <%-- using System; using System.Collections; using System.ruponentModel; using System.Data; using System.Drawing; using System.Web; using System.Web.SessionState; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.HtmlControls;
public class Cookieless2 : System.Web.UI.Page
{
protected System.Web.UI.WebControls.Label lblInfo;
private void Page_Load(object sender, System.EventArgs e)
{
if (Session["test"] != null)
{
lblInfo.Text = "Successfully retrieved " + (string)Session["test"];
}
else
{
lblInfo.Text = "Session information not found.";
}
}
#region Web Form Designer generated code
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: This call is required by the ASP.NET Web Form Designer.
//
InitializeComponent();
base.OnInit(e);
}
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
}
--%>
</source>
