NPOI导出Excel，添加图片和设置格式，添加条形码

先上代码

using grproLib;
using System;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.IO;
using System.Net;
using System.Security.Cryptography;
using System.Text;
using System.Web.Script.Serialization;

namespace shopeePrint
{
    class Program
    {
        //static string ConnectionStr = "uid=gkweb_ticnL;pwd=gtIddQVVbSd89*@r%E;database=GBWMSDB;server=117.48.196.54,2859;Pooling=true;Min Pool Size=5;Max Pool Size=1000";

        static void Main(string[] args)
        {
            string url = "https://sellercenter-api.jumia.com.ng/?";
            //string Action = "FeedList";
            string Action = "GetDocument";
            string Format = "JSON";
            string Timestamp = System.Web.HttpUtility.UrlEncode(DateTime.Now.AddDays(-1).ToString("s") + "+0000", System.Text.Encoding.Default); ;
            //string Timestamp = DateTime.Now.AddDays(-1).ToString("s") + "+0000";
            string UserID = "jumia888999@gmail.com";
            string Version = "1.0";
            string Signature = "7c40abd44eeb21009edcb03f045360bdeec3a70d";
            string DocumentType = "invoice";//'invoice', 'exportInvoice', 'shippingLabel', 'shippingParcel', 'carrierManifest', or "serialNumber".
            string OrderItemIds = "[377847952]";
            string str = string.Format("Action={0}&Format={1}&Timestamp={2}&UserID={3}&Version={4}&Signature={5}&DocumentType={6}&OrderItemIds={7}"
                , Action, Format, Timestamp, UserID, Version, Signature,DocumentType, OrderItemIds);
            //str = System.Web.HttpUtility.UrlEncode(str, System.Text.Encoding.Default);
            string urlstr = url + str;
            Console.WriteLine(urlstr);
            Program.WriteLog(urlstr);
            HttpWebRequest httpWebRequest = (HttpWebRequest)WebRequest.Create(urlstr);
            string result = "";
            try
            {
                HttpWebResponse httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
                using (StreamReader streamReader = new StreamReader(httpResponse.GetResponseStream()))
                {
                    result = streamReader.ReadToEnd();
                    Console.WriteLine(result);
                    Program.WriteLog(result);
                }
            }
            catch (Exception err)
            {
                //msg = err.Message;
            }
            //string json = new JavaScriptSerializer().Serialize(param);
            //string result = GetMessageResult(json, shoopurl, key, out msg);
            //shopeeOrderList shooporders = new JavaScriptSerializer().Deserialize<shopeeOrderList>(result);
        }
        private static void WriteLog(string msg)
        {
         
            //当前程式目录创建Log目录
            string path = AppDomain.CurrentDomain.BaseDirectory;
            if (!Directory.Exists(path))
            {
                Directory.CreateDirectory(path);
            }
            string fileName = DateTime.Now.ToString("yyyy-MM-dd");

            string filepath = path + fileName + ".txt";

            Stream fileStream = null;
            StreamWriter writeAdapter = null;
            fileStream = File.Open(filepath, FileMode.Append, FileAccess.Write, FileShare.Write);
            writeAdapter = new StreamWriter(fileStream, System.Text.Encoding.UTF8);
            writeAdapter.WriteLine("***********" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + "************");
            writeAdapter.WriteLine("Message::::" + msg);
            writeAdapter.WriteLine("***********End*********************************************************");
            writeAdapter.WriteLine(" ");
            writeAdapter.Close();
        }

        private static string GetMessageResult(string json , string url, string key, out string msg)
        {
            msg = "";
            string input = string.Format("{0}|{1}", url.Replace(" ", ""), json.Replace(" ", ""));
            HMACSHA256 hm256 = new HMACSHA256(ASCIIEncoding.ASCII.GetBytes(key));
            byte[] hashBytes = hm256.ComputeHash(ASCIIEncoding.ASCII.GetBytes(input));
            string authe = BitConverter.ToString(hashBytes).Replace("-", "").ToLower();

            HttpWebRequest httpWebRequest = (HttpWebRequest)WebRequest.Create(url);
            httpWebRequest.ContentType = "application/json";
            byte[] bytes = System.Text.Encoding.ASCII.GetBytes(json);
            httpWebRequest.ContentLength = bytes.Length;
            httpWebRequest.Method = "POST";
            httpWebRequest.Headers["Authorization"] = authe;
            httpWebRequest.KeepAlive = false;

            Stream requestStream = httpWebRequest.GetRequestStream();
            requestStream.Write(bytes, 0, bytes.Length);
            requestStream.Close();
            string result = "";
            try
            {
                HttpWebResponse httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
                using (StreamReader streamReader = new StreamReader(httpResponse.GetResponseStream()))
                {
                    result = streamReader.ReadToEnd();
                    Program.WriteLog(result);
                    Console.WriteLine(result);
                }
            }
            catch (Exception err)
            {
                msg = err.Message;
            }
            return result;
        }

    }

    class FeedListParam
    {
        public string Action { get; set; }
        public string Format { get; set; }
        public string Timestamp { get; set; }
        public string UserID { get; set; }
        public string Version { get; set; }
        public string Signature { get; set; }
        public string CreatedAfter { get; set; }
        public string CreatedBefore { get; set; }
        public string Search { get; set; }
        public string Filter { get; set; }
        public string Limit { get; set; }
        public string Offset { get; set; }
        public string SkuSellerList { get; set; }
        public string UpdatedAfter { get; set; }
        public string UpdatedBefore { get; set; }
        public string GlobalIdentifier { get; set; }
    }

}

项目引用NPOI

测试输出的Excel  显示条形码

设置边框