Cross Page Posting not working

Question

I am trying to pass the value of a variable from one page to another using cross page post-back using this code:

on page1:

<asp:TextBox ID="changepwd" runat="server"></asp:TextBox>

<asp:Button ID="ChangePassword" runat="server" Text="Change Password" 
 PostBackUrl="~/Page2.aspx" />

I have assigned its value at runtime from the database in the cs file as: changepwd.Text = dataSet.Tables[0].Rows[0]["empPassword"].ToString();

On page 2: In page load event:

protected void Page_Load(object sender, EventArgs e)
    {
        if (PreviousPage != null && PreviousPage.IsCrossPagePostBack)
        {
            TextBox txt = (TextBox)PreviousPage.FindControl("changepwd");
            TextBox1.Text = txt.Text;
        }
    }

but I don't get the value from the previous page. i am getting the value as null. On page1 I am getting the value correctly from the database but it is not being passed onto page 2. Can you please tell me why?

Is your textbox directly within page 1's naming container, or within some other control on the page? The [documentation](http://msdn.microsoft.com/en-us/library/ms178139(v=vs.100).aspx) says: *The FindControl method finds controls in the current naming container. If the control you are looking for is inside another control (typically, inside a template), you must first get a reference to the container and then search the container to find the control you want to get.* — Netricity, May 19 '13 at 08:37
Expose the textbox's text as a public property of page 1, then in page 2, cast PreviousPage to page 1's type and read the property. — Netricity, May 19 '13 at 13:27

score 0 · Answer 1 · answered May 20 '13 at 02:40

Hope its helping u:

Page 1:

<asp:TextBox ID="changepwd" runat="server"></asp:TextBox>

<asp:Button ID="btnChangePassword" runat="server" Text="Change Password" 
 PostBackUrl="~/Page2.aspx" />

Page 1 Behind Code:

public TextBox ChangePassword
{
    get
    {
        return changepwd;
    }
}

Page 2: define this at the page header:

<%@ PreviousPageType VirtualPath="~/Page1.aspx" %>

Page 2 Behind Code:

protected void Page_Load(object sender, EventArgs e)
{
    if (Page.PreviousPage != null && PreviousPage.IsCrossPagePostBack == true)
    {
        TextBox1.Text = PreviousPage.ChangePassword.Text;
    }
}

Cross Page Posting not working

1 Answers1