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(-).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, , 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