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Posted by: Brent Meacham on May 1, 2011

The Ways Passing Values between Different Web Pages Using C#

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In the web application, pages often need the information from the previous pages. Here, I summarized the various ways that can be used to pass values between different web pages by giving the following source example.

1. Sources Files

1.1 Prevous page:

Previouspage.aspx

Previouspage.aspx.cs

1.2 Current page

Currentpage.aspx

Currentpage.aspx.cs

2. Source

2.1 PreviousPage.aspx

<%@ Page Language=”C#” AutoEventWireup=”true” CodeBehind=”PreviousPage.aspx.cs” Inherits=”ValuePassing.PreviousPage” %>

<head runat=”server”>

<title>Previous Page</title>

</head>

<body>

<form id=”form1″ runat=”server”>

<div>

<table>

<tr><td>Query String Item : </td><td><asp:TextBox ID=”QueryStringItem” runat=”server” Text=”Query String Passed”></asp:TextBox><br /></td></tr>

<tr><td>Post Information: </td><td><asp:TextBox ID=”PostInformation” runat=”server” Text=”Post Information Passed”></asp:TextBox><br /></td></tr>

<tr><td>Session Object: </td><td><asp:TextBox ID=”SessionObject” runat=”server” Text=”Session Value Passed”></asp:TextBox><br /></td></tr>

<tr><td>Public Property: </td><td><asp:TextBox ID=”PublicProperty” runat=”server” Text=”Public Value Passed”></asp:TextBox><br /></td></tr>

<tr><td>Text Control: </td><td><asp:TextBox ID=”TextControl” runat=”server” Text=”Text Control Value Passed”></asp:TextBox><br /></td></tr>

<tr><td colspan=”2″ align=”center”><asp:Button ID=”Submit” runat=”server” Text=”To Current Page” OnClick = “Submit_Click”/></td></tr>

</table>

</div>

</form>

</body>

</html>

2.2 PreviousPage.aspx.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

namespace ValuePassing

{

public partial class PreviousPage : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

}

protected void Submit_Click(object sender, EventArgs e)

{

//Passing value to another page through Session

Session["SessionObject"] = SessionObject.Text;

//Passing value to next page through adding query string at the end of URL

Server.Transfer(“CurrentPage.aspx?QueryStringItem=” + QueryStringItem.Text);

}

//Passing value to next page through Public Property

public String CurrePublicProperty

{

get

{

return PublicProperty.Text;

}

}

}

}

2.3 CurrentPage.aspx

<%@ Page Language=”C#” AutoEventWireup=”true” CodeBehind=”CurrentPage.aspx.cs” Inherits=”ValuePassing.CurrentPage” %>

<%@ PreviousPageType VirtualPath=”~/PreviousPage.aspx” %>

<head runat=”server”>

<title>Current Page</title>

</head>

<body>

<form id=”form1″ runat=”server”>

<div>

<table>

<tr><td>Previous Query String Item :</td><td><asp:TextBox ID=”QueryStringItem” name=”PreviousQueryStringItem: ” runat=”server” Text=”"></asp:TextBox> </td></tr>

<tr><td>Previous Post Information :</td><td><asp:TextBox ID=”PostInformation” name=”PreviousPostInformation: ” runat=”server” Text=”"></asp:TextBox> </td></tr>

<tr><td>Previous Session Object :</td><td><asp:TextBox ID=”SessionObject” name=”PreviousSessionObject: ” runat=”server” Text=”"></asp:TextBox> </td></tr>

<tr><td>Previous Public Property :</td><td><asp:TextBox ID=”PublicProperty” name=”PreviousPublicProperty: ” runat=”server” Text=”"></asp:TextBox> </td></tr>

<tr><td>Previous Text Control :</td><td><asp:TextBox ID=”TextControl” name=”PreviousTextControl: ” runat=”server” Text=”"></asp:TextBox> </td></tr>

</table>

</div>

</form>

</body>

</html>

2.4 CurrentPage.aspx.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

namespace ValuePassing

{

public partial class CurrentPage : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

//Getting query string value from previous page

QueryStringItem.Text = Request.QueryString["QueryStringItem"];

//Getting post information value from previous page

PostInformation.Text = Request.Form["PostInformation"];

//Getting session value value from previous page

SessionObject.Text = (string)(Session["SessionObject"]);

//Getting public property value from previous page

PublicProperty.Text = PreviousPage.CurrePublicProperty;

//Getting control value from previous page

TextBox txtBox = (TextBox)PreviousPage.FindControl(“TextControl”);

if (txtBox != null)

{

TextControl.Text = txtBox.Text;

}

}

}

}

3. Pages

3.1 Previous Page

3.2 Current Page

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