Default.aspx
<%@ Page Language="C#" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<%@ Register Assembly="RadPdf" Namespace="RadPdf.Web.UI" TagPrefix="radPdf" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>RAD PDF Sample</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <radPdf:PdfWebControl id="PdfWebControl1" runat="server" height="600px" width="100%" />
    </div>
    </form>
</body>
</html>
Default.aspx.cs
using System;
partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack) 
        {
            //Get PDF as byte array from file (or database, browser upload, remote storage, etc)
            byte[] pdfData = System.IO.File.ReadAllBytes(@"C:\demo.pdf");
            
            //Load PDF byte array into RAD PDF
            this.PdfWebControl1.CreateDocument("Document Name", pdfData);
        }
    }
}
Default.aspx
<%@ Page Language="VB" CodeFile="Default.aspx.vb" Inherits="_Default" %>
<%@ Register Assembly="RadPdf" Namespace="RadPdf.Web.UI" TagPrefix="radPdf" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>RAD PDF Sample</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <radPdf:PdfWebControl id="PdfWebControl1" runat="server" height="600px" width="100%" />
    </div>
    </form>
</body>
</html>
Default.aspx.vb
Option Explicit On
Option Strict On
Partial Class _Default
    Inherits System.Web.UI.Page
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        If Not IsPostBack Then
            'Get PDF as byte array from file (or database, browser upload, remote storage, etc)
            Dim pdfData As Byte() = System.IO.File.ReadAllBytes("C:\demo.pdf")
            'Load PDF byte array into RAD PDF
            Me.PdfWebControl1.CreateDocument("Document Name", pdfData)
        End If
    End Sub
End Class