cross-post with a Master Page

Question

jrm5f2 0 Newbie Poster

14 Years Ago

Hello, I am trying to post data from one page to another, I keep getting an error message every time I run the code "Object reference not set to an instance of an object.". Please help

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        If PreviousPage.IsCrossPagePostBack Then
            CURRENT_POLICY.Text = "PO_NUMBER:" + CType(PreviousPage.Master.FindControl("PO_NUMBER"), TextBox).Text
        Else
        End If
    End Sub

the control that I am trying to get the value from is PO_NUMBER on the first page. I am using Visual Studio 2008. Thank you

P.S. All of the pages use the master page

asp.net

Edited 14 Years Ago by jrm5f2 because: Forgot important information

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Latest Post 14 Years Ago Latest Post by Sals

reach_yousuf 2 Junior Poster

14 Years Ago

Hi there
in master page

<asp:TextBox ID="TextBox1" runat="server" Text="hello"></asp:TextBox>

Try this code in referral page. this should work with you

txtProductName.Text = CType(Page.Master.FindControl("textbox1"), TextBox).Text

Pls. Mark as solved if it helps you!!!

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jrm5f2 0 Newbie Poster · Answer 1 · 2009-12-08T01:51:17+00:00

Thank you for the reply, but I am not quite following you, are you saying put the textbox in the master page? My pages referance the master page for the layout and links, but the content is what I am working in. Example I have two pages test1.aspx and test2.aspx, both of the pages reference the master page for layout and links. what I am trying to do is cross post from test1.aspx to test2.aspx. Not from master to test1.aspx. As it stands I can crosspost from test1.aspx to test2.aspx without using the master page. please help

Hi there
in master page
<asp:TextBox ID="TextBox1" runat="server" Text="hello"></asp:TextBox>
Try this code in referral page. this should work with you
txtProductName.Text = CType(Page.Master.FindControl("textbox1"), TextBox).Text
Pls. Mark as solved if it helps you!!!

Sals 0 Light Poster · Answer 2 · 2009-12-08T15:13:18+00:00

Hello, I am trying to post data from one page to another, I keep getting an error message every time I run the code "Object reference not set to an instance of an object.". Please help
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        If PreviousPage.IsCrossPagePostBack Then
            CURRENT_POLICY.Text = "PO_NUMBER:" + CType(PreviousPage.Master.FindControl("PO_NUMBER"), TextBox).Text
        Else
        End If
    End Sub
the control that I am trying to get the value from is PO_NUMBER on the first page. I am using Visual Studio 2008. Thank you
P.S. All of the pages use the master page

The problem is when u find ur master page in the current page your current page is not able to find the master page
i.e,

PreviousPage.Master.FindControl("PO_NUMBER")

would be returning null