找不到类型或名称空间名称"Bytescout"(您是否缺少using指令或程序集引用?) [英] The type or namespace name 'Bytescout' could not be found (are you missing a using directive or an assembly reference?)

问题描述

plz先生，请帮我进行以下编码

plz help me out sir for following coding

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Drawing.Imaging;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Drawing;
using System.Collections.Generic;

using Bytescout.BarCodeReader;

namespace WebTestSharp
{
    public partial class _Default : System.Web.UI.Page
    {
        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();

                // 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;

                ListBox1.Items.Clear();
                ListBox1.Visible = true;
                ListBox1.Items.Add("Reading barcode(s) from image #" + imgNum);

                FoundBarcode[] barcodes = barcodeReader.ReadFrom(savePath);

                if (barcodes.Length == 0)
                {
                    ListBox1.Items.Add("    No barcodes found");
                }
                else
                {
                    foreach (FoundBarcode barcode in barcodes)
                        ListBox1.Items.Add(String.Format("Found barcode with type '{0}' and value '{1}'", barcode.Type, barcode.Value));
                }

            }
            else
            {
                // Notify the user that a file was not uploaded.
                UploadStatusLabel.Text = "You did not specify a file to upload.";
            }
        }
    }
}

推荐答案

因为Bytescout仅在该代码中作为using语句的一部分被提及:

Since Bytescout is only mentioned in that code as part of the using statement:

using Bytescout.BarCodeReader;

可能您尚未为包含类或名称空间的程序集添加引用. br/>
参见此处: MSDN:如何:在Visual Studio中添加和删除引用( C#)" [

The chances are you have not added a reference to the assembly containing the class or namespace.

See here: MSDN: "How to: Add and Remove References in Visual Studio (C#)"[^]

[edit]typo[/edit]

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