Fundamental unit of data

 Fundamental unit of data in computer is bit or binary digit  0, 1

how to convert byte array to image in asp.net

Byte[] bytes =  fileUpload1.FileBytes;

  MemoryStream m = new MemoryStream(bytes);

     System.Drawing.Image MyImage = System.Drawing.Image.FromStream(m);            

            string filepathandname = Server.MapPath(string.Format("~/uploads/{0}-{1}-{2}", DateTime.Now.ToShortDateString(), Guid.NewGuid(), ".png"));

            MyImage.Save(filepathandname);

How to see or view a base 64 image file or image file in HTML page and how to see image file base 64 with URL

 <img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAABkAAAAOECAYAAAD5Tf2iAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAP+lSURBVHhe7N0LYFTVuTb+B1AkeIGEm0CABBAiglyD3CINoqJoKRSRNqWtSEUK51NrgVKPHD48LYLHqt8fSvEgtlJaRAqlFouKIAUBCYIXREAggVwAA0lQgQgK//2uvfbMnvueaybx+dld9m1m1r5OZr17rbdOt249LoGIiIiIiIiIiIiIiKgWqav/JSIiIiIiIiIiIiIiqjUYACEiIiIiIiIiIiIiolqHARAiIiIiIiIiIiIiIqp1GAAhIiIiIiIiIiIiIqJahwEQIiIiIiIiIiIiIiKqdep069bjkh4nIiIiIiIiIiKq1erXv0KPEVFtdf78V3qMvu3YAoSIiIiIiIiIiIiIiGodBkCIiIiIiIiIiIiIiKjWqdeixbWz9Hi1qFevHn7zmydwyy1DUFVVhaKiIr2EiIiIiIiIiIgoturVu0yP

If error occurs in visual studio that iisexpress.exe access is denied and you build the web site it shows no error but it is having error

Than Run visual studio as administrator 

Web api get post delete and put difference in apicontroller class

 public class ValuesController : ApiController

{

  //For get all data

    public IEnumerable<BookMaster> Get()

    {

           }

    

   

//For get by ID

    public void Get(int id)

    {

        }

        

    [HttpPost] // insert or add or create new

    public string Post([FromBody]string value)

    {

        return value;

    }

    // PUT api/<controller>/5    update

        public void Put(BookMaster bookMaster) 

    {    

    }

    // DELETE api/<controller>/5

    [HttpDelete]

    public void Delete(int id)

    {

    }

How to use ObjectDataSource in asp.net with Model or business object and controller or login layer

 >Add object datasource from controls in visual studio

> Add TypeName Property(class name .cs file) where you have get, update and delete methods.

>Click on configure data source and select dataset or typename file and you will get select insert update delete methods and click on finish and use this object datasource id in grid view or other controls. 

bulk insert with single insert query in sql

 INSERT INTO tbl_name (a,b,c) VALUES(1,2,3),(4,5,6),(7,8,9);

Transaction in asp.net c#

 https://learn.microsoft.com/en-us/aspnet/web-forms/overview/data-access/working-with-batched-data/wrapping-database-modifications-within-a-transaction-cs