C# Enum Value and Display name Extension

using System;

using System.Collections.Generic;

using System.ComponentModel.DataAnnotations;

using System.Linq;

using System.Reflection;

using System.Runtime.Serialization;

using System.Web;

namespace Helper.Extensions

{

    public static class EnumExtensions

    {

        public static string GetEnumValue(this Enum enumValue)

        {

            var type = enumValue.GetType();

            var info = type.GetField(enumValue.ToString());

            if (info == null) return string.Empty;

            var da = (EnumMemberAttribute[])

                    (info.GetCustomAttributes(typeof(EnumMemberAttribute), false));

            if (da.Length > 0)

                return da[0].Value;

            else

                return string.Empty;

        }

        public static string GetDisplayName(this Enum enumValue)

        {

            return enumValue.GetType()

                            .GetMember(enumValue.ToString())

                            .First()

                            .GetCustomAttribute<DisplayAttribute>()

                            .GetName();

        }

    }

}

C# simple example for recursive call

using System;

class HelloWorld {

  static void Main() {

      var result=print(0);

    Console.WriteLine(result);

  }

  public static string print(int count)

  {

      return print2(count);

  }

  public static string print2(int count)

  {

      if(count <= 2)

      {

          Console.WriteLine(count);

          count++;

          //recursive call upto 3count

          return print(count);

      }

     

      return "Recursive final return";

  }

}

//output like below

0

1

2

Recursive final return

Mapster over AutoMapper for mapping objects in c# Crud

1.Add Mapster packages from NuGet

<package id="Mapster" version="7.3.0" targetFramework="net48" />

<package id="Mapster.Core" version="1.2.0" targetFramework="net48" />

2.Create Source class

//Source or DTO

public class TempCacheDto

    {

        public int Id { get; set; }

        public string SerialNumber { get; set; }

    }

3.Create Destination class

//Destination or Entity Db object

public class TempCache

    {

        public int Id { get; set; }

        public string SerialNumber { get; set; }

    }

4.Create Service or repository class where mapping required to convert Dto to Enity object.

Simple Save and Retrieve example below for using mapster and entity framework.

using Mapster;

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

namespace TempCache.Repositories

{

    public class TempCacheRepository

    {

//save data from dto model to entity using mapster        

        public bool Save(TempCacheModel bcTempCache)

        {

            using (var context = new DbContext())

            {

                if (bcTempCache.Id == 0)

                {

                    TempCache entity = bcTempCache.Adapt<TempCache>();

                    context.TempCaches.Add(entity);

                }

                else

                {

                    TempCache exist = context.TempCaches

                                        .FirstOrDefault(x => x.Id == bcTempCache.Id);

                    if (exist != null)

                    {

                        exist = bcTempCache.Adapt<TempCacheModel, TempCache>(exist);

                    }

                    else

                    {

                        return false;

                    }

                }

                context.SaveChanges();

                return true;

            }

        }

//get list from Db and retun as dto list using mapster

        public List<TempCacheModel> TempCaches()

        {

            using (var context = new DbContext())

            {

                return context.TempCaches.ToList().Adapt<List<TempCacheModel>>();

            }

        }

//get list from Db and retun as dto list using mapster        

        public TempCacheModel GetById(int id)

        {

            using (var context = new DbContext())

            {

                return context.TempCaches.FirstOrDefault(x=>x.Id==slNo)?

                        .Adapt<TempCacheModel>();

            }

        }

    }

}

Why Mapster over Auto mapper

Method	Mean	StdDev	Error	Gen 0	Gen 1	Gen 2	Allocated
'Mapster 6.0.0'	108.59 ms	1.198 ms	1.811 ms	31000.0000	-	-	124.36 MB
'Mapster 6.0.0 (Roslyn)'	38.45 ms	0.494 ms	0.830 ms	31142.8571	-	-	124.36 MB
'Mapster 6.0.0 (FEC)'	37.03 ms	0.281 ms	0.472 ms	29642.8571	-	-	118.26 MB
'Mapster 6.0.0 (Codegen)'	34.16 ms	0.209 ms	0.316 ms	31133.3333	-	-	124.36 MB
'ExpressMapper 1.9.1'	205.78 ms	5.357 ms	8.098 ms	59000.0000	-	-	236.51 MB
'AutoMapper 10.0.0'	420.97 ms	23.266 ms	35.174 ms	87000.0000	-	-	350.95 MB

Azure Cosmo DB

 Azure Cosmo DB used to store non Sql data that is collection of objects.

Important key stack properties are id and partition key.

Partition Key is kind of grouping / or like disk drive C, D drive in our PC,Lap.

Make sure partition key as perfect column Ex: need to retrieve data frequently day wise means then i will make CreatedDate as partition key (CreatedDate= DateTime.UtcNow.Date) 

id: its mandatory property & non-nullable

Unique/Primary key: will be combination of Partition Key + id

we can insert same id again but it's partition should be different. also, we can store different type of object but that object should contain same id and partition key.

Hierarchy: Example based OrderGroups is container

-->Data Base 

    |__ Container: kind of table or entity name

            |__ Items: Kind of Table Entity values

            |__Stored Procedure

            |__User Defined Functions & Stored Procedure

            |__ Triggers