5 Ways to Send Data Between ASP.NET Pages

Abhimanyu K Vatsa

5 Ways to send data between ASP.NET Pages

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tom hines7y ago
Thanks, how do I run those in a project. When I add them to a project I get these errors? Severity Code Description Project File Line Suppression StateError CS0103 The name 'Label1' does not exist in the current context WebApplication1 C:\Users\THines\source\repos\new\5WaystosenddatabetweenASP.NETPages\WebApplication1\WebApplication1\Control.aspx.cs 15 Active Error CS0103 The name 'txtData' does not exist in the current context WebApplication1 C:\Users\THines\source\repos\new\5WaystosenddatabetweenASP.NETPages\WebApplication1\WebApplication1\Default.aspx.cs 13 Active Error CS0103 The name 'txtData' does not exist in the current context WebApplication1 C:\Users\THines\source\repos\new\5WaystosenddatabetweenASP.NETPages\WebApplication1\WebApplication1\Default.aspx.cs 20 Active Error CS0103 The name 'txtData' does not exist in the current context WebApplication1 C:\Users\THines\source\repos\new\5WaystosenddatabetweenASP.NETPages\WebApplication1\WebApplication1\Default.aspx.cs 32 Active Warning CS0436 The type 'Control' in 'C:\Users\THines\source\repos\new\5WaystosenddatabetweenASP.NETPages\WebApplication1\WebApplication1\Control.aspx.cs' conflicts with the imported type 'Control' in 'WebApplication1, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'. Using the type defined in 'C:\Users\THines\source\repos\new\5WaystosenddatabetweenASP.NETPages\WebApplication1\WebApplication1\Control.aspx.cs'. WebApplication1 C:\Users\THines\source\repos\new\5WaystosenddatabetweenASP.NETPages\WebApplication1\WebApplication1\Control.aspx 1 Active Warning CS0436 The type '_Default' in 'C:\Users\THines\source\repos\new\5WaystosenddatabetweenASP.NETPages\WebApplication1\WebApplication1\Default.aspx' conflicts with the imported type '_Default' in 'WebApplication1, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'. Using the type defined in 'C:\Users\THines\source\repos\new\5WaystosenddatabetweenASP.NETPages\WebApplication1\WebApplication1\Default.aspx'. WebApplication1 C:\Users\THines\source\repos\new\5WaystosenddatabetweenASP.NETPages\WebApplication1\WebApplication1\Default.aspx 1 Active
tom hines7y ago
Thanks, how do I run those in a project? I get these errors
jay patel8y ago
How to pass large amount of data between two pages.can you give one example of it.thank you
Nimit Joshi12y ago
Its Great... Thanks

How many ways do you know to send data between ASP.NET Pages? In this article I'm going to list 5 ways. The first 2 or 3 ways are very well-known and the last 2 or 3 ways are not well-known. You will find here mostly inline methods to receive the data in various pages.

So, let's start with the most well-known one.

Using Session State

Using this technique I will store the data in a session variable on the client machine and on the next page, grab it; see:

ASPX Page:

<asp:TextBox ID="txtData" runat="server"></asp:TextBox>
<br /><br />
<asp:Button ID="btnSessionState" runat="server" Text="Session State" OnClick="btnSessionState_Click" />

Code-Behind:

protected void btnSessionState_Click(object sender, EventArgs e)
{
Session["Data"] = txtData.Text;
Response.Redirect("SessionState.aspx");
}

Receiver ASPX Page:

<div>
<h1>Session State</h1>
Data is: <%=Session["Data"] %>

And you are all set, run it and test it.

Using Query String

Using this technique I will add my data with an URL and on the next page grab it; see:

ASPX Page:

<asp:TextBox ID="txtData" runat="server"></asp:TextBox>
<br /><br />
<asp:Button ID="btnQueryString" runat="server" Text="Query String" OnClick="btnQueryString_Click" />

Code-Behind:

protected void btnQueryString_Click(object sender, EventArgs e)
{
Response.Redirect("QueryString.aspx?Data=" + Server.UrlEncode(txtData.Text));
}

Receiver ASPX Page:

<h1>Query String</h1>
Data is: <%=Server.UrlDecode(Request.QueryString["Data"]) %>

And you are all set, run it and test it.

Using HpptPost

Using this technique I will call a post back URL and the on next page using Request.From I will grab it; see:

ASPX Page:

<asp:TextBox ID="txtData" runat="server"></asp:TextBox>
<br /><br />
<asp:Button ID="btnHttpPost" runat="server" Text="HTTPPost" PostBackUrl="~/HttpPost.aspx" />

Note: There is no code-behind method call instead of a postbackurl in the button attribute.

Receiver ASPX Page:

<h1>HttpPost</h1>
Data is: <%=Request.Form["txtData"] %>

And you are all set, run it and test it.

Using Public Properties

Using this technique I will send using a public method and on the next page, grab it using PreviousPage.MethodName; see:

ASPX Page:

<asp:TextBox ID="txtData" runat="server"></asp:TextBox>
<br /><br />
<asp:Button ID="btnPublicProperties" runat="server" Text="Public Properties" OnClick="btnPublicProperties_Click" />

Code-Behind:

protected void btnPublicProperties_Click(object sender, EventArgs e)
{
Server.Transfer("PublicProperties.aspx");
}
public string PublicData
{
get
{
return txtData.Text;
}
}

Receiver ASPX Page:

<h1>Public Properties</h1>
Data is: <%=PreviousPage.PublicData %>

And you are all set, run it and test it.

Using Controls

Using this technique I will just redirect the user to the next page and on the next page use PreviousPage.FindControl to grab the data; see:

ASPX Page:

<asp:TextBox ID="txtData" runat="server"></asp:TextBox>
<br /><br />
<asp:Button ID="btnControl" runat="server" Text="Control" OnClick="btnControl_Click" />

Code-Behind:

protected void btnControl_Click(object sender, EventArgs e)
{
Server.Transfer("Control.aspx");
}

Receiver ASPX Page:

<h1>Control</h1>
Data is: <asp:Label ID="Label1" runat="server" Text="Label" />

Receiver Code-Behind Page:

protected void Page_Load(object sender, EventArgs e)
{
var textbox = PreviousPage.FindControl("txtData") as TextBox;
if (textbox != null)
{
Label1.Text = textbox.Text;
}
}

And you are all set, run it test it.

You can use any technique given above depending upon your business requirements.