Launching PDF without saving it first

I have a table of pdf files that need to be displayed to an employee. When an employee punches in I check if they viewed the pdf files. If not, I show a link on the login page for them to click on. In order to track the clicking of that link I use the .navigateurl to go to another page where I can update a table. I then want to display the pdf.

I am doing the following:
To test initially, I saved one pdf in the same directory as the login.aspx page of my .net project.

Here's the code:

Login.aspx :
hlnkTest.Visible = True
hlnkTest.Target = "_blank"
hlnkTest.Text = "TEST"
hlnkTest.NavigateUrl = "CaptureClickandDisplayPDF.aspx"

CaptureClickandDisplayPDF.aspx :
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
If Not Page.IsPostBack Then
Dim FilePath As String

Response.ContentType = "Application/pdf"
FilePath = MapPath("TestPDF.pdf")
Response.WriteFile(FilePath)
End If
End Sub

I don't get an error message, but get mumbo jumbo displayed and not the actual contents of the pdf file.

What am I doing wrong? Is there another way to do this?

Thanks,
Ninel
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Yes and no. I changed the way I coded it.

When the user clicks on the link instead of navigating to a different aspx page I navigate directly to the pdf file which opens up in a separate window. There is a checkbox on the first page that is disabled. When the link is clicked on I need the checkbox enabled I also need to execute a stored procedure that updates a table.

This is what I have so far:

Page1
HTML:
<asp:hyperlink id="hlnkTest" runat="server" Font-Names="Tahoma" Font-Size="x-Small" ForeColor="BLUE" Visible="true"></asp:hyperlink>
<asp:checkbox id="chkRead" runat="server" OnCheckedChanged="chkRead_checked" AutoPostBack="true" Font-Size="x-Small" Font-Names="Tahoma" Text="I have read the new/updated policies"></asp:checkbox>

ASPX:
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
If Not Page.IsPostBack Then
hlnkTest.Visible = True
hlnkTest.Target = "_blank"
hlnkTest.Text = "TEST"
hlnkTest.Attributes.Add("onclick", "enableCheckBox()")
hlnkTest.NavigateUrl = "EmployeePolicies.pdf"
chkRead.Enabled = False

Dim str As String
str = "<script language='javascript'>"
str = str & "function enableCheckBox() {document.getElementById('chkRead').disabled = false;}"
str = str & "</script>"
Response.Write(str)
End If
End Sub

I'm not getting any errors, but it's also not enabling the checkbox.
What am I doing wrong?

Thanks,
Ninel