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Decode page by page from PDF OR TIFF - ASP.NET C#

BarCode Reader SDK sample in ASP.NET C# demonstrating ‘Decode page by page from PDF OR TIFF’

Default.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebTestSharp._Default" %>

<!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>Web Barcode Reader Tester (C#)</title>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            Click browse button to upload a PDF/TIFF document<br />
            <asp:FileUpload ID="FileUpload1" runat="server" /><br />
            <br />
            Page No. to read barcode from:
        <asp:TextBox ID="txtPageNo" Text="1" runat="server"></asp:TextBox>
            <br />
            <br />
            <asp:Button ID="UploadButton"
                Text="Upload file and read barcodes"
                OnClick="UploadButton_Click"
                runat="server"></asp:Button>
            <br />
            <asp:Label ID="UploadStatusLabel" Text="" runat="server"></asp:Label>
            <br />
            <asp:ListBox ID="ListBox1" runat="server" Visible="False"></asp:ListBox><br />
            <br />
        </div>
    </form>
</body>
</html>

Default.aspx.cs
using System;
using Bytescout.BarCodeReader;

namespace WebTestSharp
{
	public partial class _Default : System.Web.UI.Page
	{
        /*
        IF YOU SEE TEMPORARY FOLDER ACCESS ERRORS: 

        Temporary folder access is required for web application when you use ByteScout SDK in it.
        If you are getting errors related to the access to temporary folder like "Access to the path 'C:\Windows\TEMP\... is denied" then you need to add permission for this temporary folder to make ByteScout SDK working on that machine and IIS configuration because ByteScout SDK requires access to temp folder to cache some of its data for more efficient work.

        SOLUTION:

        If your IIS Application Pool has "Load User Profile" option enabled the IIS provides access to user's temp folder. Check user's temporary folder

        If you are running Web Application under an impersonated account or IIS_IUSRS group, IIS may redirect all requests into separate temp folder like "c:\temp\".

        In this case
        - check the User or User Group your web application is running under
        - then add permissions for this User or User Group to read and write into that temp folder (c:\temp or c:\windows\temp\ folder)
        - restart your web application and try again

        */

		protected void UploadButton_Click(object sender, EventArgs e)
		{
			String savePath = @"\uploads\";

			if (FileUpload1.HasFile)
			{
				String fileName = FileUpload1.FileName;
				savePath += fileName;
				FileUpload1.SaveAs(Server.MapPath(savePath));

				Reader barcodeReader = new Reader();

				// Limit search to 1D barcodes only (exclude 2D barcodes to speed up the search).
				// Change to barcodeReader.BarcodeTypesToFind.SetAll() to scan for all supported 1D and 2D barcodes 
				// or select specific type, e.g. barcodeReader.BarcodeTypesToFind.PDF417 = True
				barcodeReader.BarcodeTypesToFind.SetAll1D();

				// reader.MediumTrustLevelCompatible = true; // uncomment this line to enable Medium Trust compatible mode (slows down the recognition process as direct image data access is disabled in Medium Trust mode)
				UploadStatusLabel.Visible = false;

                // Page No to read
                int PageNoToRead = Convert.ToInt32(txtPageNo.Text);

                ListBox1.Items.Clear();
				ListBox1.Visible = true;
				ListBox1.Items.Add("Reading barcode(s) from file \"" + fileName + "\"" + ", Page No: " + PageNoToRead);

                // Reading barcode from document on page-by-page basic
				FoundBarcode[] barcodes = barcodeReader.ReadFrom(Server.MapPath(savePath), (PageNoToRead - 1));

				if (barcodes.Length == 0)
				{
					ListBox1.Items.Add("No barcodes found");
				}
				else
				{
					foreach (FoundBarcode barcode in barcodes)
					{
                        ListBox1.Items.Add(String.Format("Found barcode - Type: '{0}', Value: '{1}', Position: '{2}'", barcode.Type, barcode.Value, barcode.Rect.ToString()));
					}
				}
			}
			else
			{
				// Notify the user that a file was not uploaded.
				UploadStatusLabel.Text = "You did not specify a file to upload.";
			}
		}
	}
}

Default.aspx.designer.cs
��//------------------------------------------------------------------------------

// <auto-generated>

//     This code was generated by a tool.

//

//     Changes to this file may cause incorrect behavior and will be lost if

//     the code is regenerated. 

// </auto-generated>

//------------------------------------------------------------------------------



namespace WebTestSharp {

    

    

    public partial class _Default {

        

        /// <summary>

        /// form1 control.

        /// </summary>

        /// <remarks>

        /// Auto-generated field.

        /// To modify move field declaration from designer file to code-behind file.

        /// </remarks>

        protected global::System.Web.UI.HtmlControls.HtmlForm form1;

        

        /// <summary>

        /// FileUpload1 control.

        /// </summary>

        /// <remarks>

        /// Auto-generated field.

        /// To modify move field declaration from designer file to code-behind file.

        /// </remarks>

        protected global::System.Web.UI.WebControls.FileUpload FileUpload1;

        

        /// <summary>

        /// txtPageNo control.

        /// </summary>

        /// <remarks>

        /// Auto-generated field.

        /// To modify move field declaration from designer file to code-behind file.

        /// </remarks>

        protected global::System.Web.UI.WebControls.TextBox txtPageNo;

        

        /// <summary>

        /// UploadButton control.

        /// </summary>

        /// <remarks>

        /// Auto-generated field.

        /// To modify move field declaration from designer file to code-behind file.

        /// </remarks>

        protected global::System.Web.UI.WebControls.Button UploadButton;

        

        /// <summary>

        /// UploadStatusLabel control.

        /// </summary>

        /// <remarks>

        /// Auto-generated field.

        /// To modify move field declaration from designer file to code-behind file.

        /// </remarks>

        protected global::System.Web.UI.WebControls.Label UploadStatusLabel;

        

        /// <summary>

        /// ListBox1 control.

        /// </summary>

        /// <remarks>

        /// Auto-generated field.

        /// To modify move field declaration from designer file to code-behind file.

        /// </remarks>

        protected global::System.Web.UI.WebControls.ListBox ListBox1;

    }

}


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