C# Corner

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  • LINQ Fundamentals - Single() Vs SingleOrDefault() - Part TwoApr 05, 2018. In first part we discussed First() and FirstOrDefault() extension method, In this part we will discuss Single() and SingleOrDefault().
  • VNet Peering With Step By Step DemoMar 25, 2018. In this article, I am going to explain what VNet peering is and how to establish it in Microsoft Azure.
  • Step-By-Step Demo Of Creating A VNet To VNet Connection In Microsoft AzureMar 23, 2018. In this article, I am going to show you how to create a VNet to VNet connection using Virtual Network Gateways.
  • Create A New Application In DotVVMMar 23, 2018. In this article, we will learn the step-by-step method to create your first DotVVM application in .NET Core.
  • Step-By-Step Demo Of Creating Azure Virtual Network, Subnets And Network Security Groups - Part ThreeMar 21, 2018. In this article, I am going to show you how to create Azure Virtual Machines, Subnets and Network Security Groups.
  • Android Kotlin - Strings And Ranges - Part ThreeMar 20, 2018. In this article, we are going to learn about Strings and Ranges in Kotlin with string methods.
  • Step-By-Step Demo Of Creating Azure Virtual Network, Subnets And Network Security Groups - Part TwoMar 20, 2018. In this article, I am going to show you how to create Azure Virtual Network, Subnets and Network Security Groups.
  • Step-By-Step Demo Of Creating Azure Virtual Network, Subnets And Network Security Groups - Part OneMar 19, 2018. In this article, I am going to show a step by step demo of how to create Azure Virtual Networks, Subnets and Network Security Groups.
  • Creating A Virtual Switch In Hyper-VMar 16, 2018. A communication channel for virtual machines with each other is defined via virtual switch, so virtual switch can be defined as a program that enables virtual machines to communicate. It actually binds the physical machine network's adapter with a virtual host.
  • Implementing Multiple Interfaces With The Same Method Signature In C#Mar 14, 2018. An interface in C# is a type which only defines a group of related functionalities and leaves the implementation of the functionalities to any class or struct which implements the interface. It helps a lot in implementing the SOLID principles and makes the application more decoupled.
  • Azure VPN Point To Site IP AddressesMar 14, 2018. Recently, I got to work with a client on something interesting. We implemented transactional replication to send data to an Azure virtual machine. This was being done to perform some testing for a project.
  • Creating A Virtual MachineMar 14, 2018. A virtual machine is a software computer that runs like a physical computer.
  • Overview Of Azure Virtual NetworksMar 13, 2018. This article will explain about Azure Virtual Networks, Network Security Groups, Subnets and other topics revolving around Azure Virtual Network.
  • Understanding Method Overriding And Virtual, Override And New Keywords In C#Mar 06, 2018. Use of inheritance and polymorphism has become an integral part of our life as a programmer. Inheritance provides a lot of benefits including code reusability, separation of concerns, cleaner code, extensibility etc.
  • Entity Framework Core Feature - Global Query FiltersMar 02, 2018. This feature is also refer as Model-level query filters. It allows to specify filter in the model level that are automatically applied to all queries that executed on the context on the specified type. It means that entity framework automatically adds the filter in where clause before executing the LINQ queries. Usually Global query filters are applied in OnModelCreating method of context. This filters are also automatically applied to LINQ queries involving the entity types referenced indirectly like included as navigation property.
  • No Tracking With Entity Framework CoreMar 02, 2018. DbContext in Entity Framework is responsible for tracking the changes made on the entity or object, so the correct update is done to the database when the SaveChange() method of context is called. When we retrieve entities using an object query, the Entity Framework puts these entities in a cache and tracks whatever changes are made on these entities until the savechanges method is called. Entity Framework tracks the query results that return entity types.
  • How To Fetch Data From Task List Using Rest For Workflow History In SharePoint OnlineFeb 20, 2018. I got a requirement to make a history form for a workflow. For that, I had to fetch the data from a task list. We can use Rest API, SP Services, or any other methods for this kind of task. So, I chose REST API for the same. Now, the question is, what will be the scenario? Because Workflow status columns of Assign to and Modified Date are not available in the normal list. Then, I learned that we can fetch it from the task list or history list as in workflow all the information resides in Task list & History List.
  • Generate And Upload P2S Root CertificateFeb 19, 2018. Azure Point to Site (P2S) VPN gateway helps to have a secure connection with Azure virtual machines through an individual client computers. Leveraging this option, VM owners can access the Azure VMs from remote locations.
  • VLFs - The Forgotten FoeFeb 19, 2018. How many of you check the amount of Virtual Log Files (VLFs) your transaction logs have?
  • Deploying VM Using ARM TemplateFeb 14, 2018. Azure Resource Manager (ARM) Templates are JSON files which define the resources which you need to deploy for your solution. ARM templates are community contributed and can be used by anyone from GitHub. This repository holds various predefined ARM templets to choose from has per your needs. But to get started with ARM templates we will be configuring a simple virtual machine deployment from scratch so we can understand easily.
  • Properties Of Object.prototype In JavaScriptFeb 05, 2018. Object.prototype is used to inherit properties and methods to the Constructor method, it may be overridden. We can use any constructor to create the object of another type with the help of Object.create() method and assign to the new constructor prototype.
  • Azure Virtual Machine Disk Encryption With Azure Key-VaultJan 27, 2018. This article explains how to encrypt Azure VM Disks with the help of Azure Key-Vault. Azure Key-Vault is a key management as a service which provides Hardware-based key management via Hardware Security Model (HSM) along with Software-based key management.
  • Top Five Developer Trends Of 2018Jan 25, 2018. The year 2017 has been one of the most exciting years for developers and technology lovers. Technologies such as big data, machine learning, Internet of Things (IoT), artificial intelligence, drones, autonomous vehicles, wearables, virtual reality, and smart homes are some of the fastest growing innovations.
  • Shared Storage With Azure Virtual MachineJan 25, 2018. This article briefs you about Shared Storage in Azure and how to use Shared Storage in multiple Azure VMs.
  • Azure Virtual Machine With PowerShell And Desired State ConfigurationJan 24, 2018. This article describe how to create Azure VM with PowerShell. The article is also extended a bit to explain why Azure Desired State Configuration is very useful while working with Azure VM and how to implement Desired State Configuration with Azure VM
  • ASP.NET Core Apps In Docker SwarmJan 23, 2018. First, we need a few Virtual Machines to make a cluster of machines to run Docker on. I am using Windows 10 and will use Hyper-V for this purpose. If you’re using another OS then skip the first part of the tutorial where I setup VMs.
  • Expression Bodied Members In C#Jan 18, 2018. What is Expression Bodied Members?1) Expression Bodied member is introduced in C#6.0 and enhanced in C#7.0. 2) Expression Bodied is a new technique or implementation to make code concise and readable. 3) Expression Bodied makes the type member(Constructor, Destructor, Methods, Property, Indexer) defined in a single expression. 4) Expression Bodied members can only be applied to the below list of type members: Constructor introduced in C#7.0 Destructor introduced in C#7.0 Property get accessor introduced in C#6.0 Property set accessor introduced in C#7.0 Methods introduced in C#6.0 Indexer introduced in C#7.0 The Syntax of expression body definition is:member => expression; where expression should be a valid expression and member can be any from above list of type members.Suppose we have a method or constructor that contain a single expression or line of code. Then In spite of using the traditional way to write code inside a method or constructor code block, we can write them as a single syntax. Those members who can follow this approach is known as Expression Bodied Members.
  • C# 7.2 - "In" Parameter Method Overloading TiebreakerJan 14, 2018. This article explains the “in” parameter method overloading with Visual Studio 2017 Version 15.6. Preview 2.
  • Bulletproof Disposable Types In .NET CoreJan 14, 2018. Whenever I do code review on .NET projects, hands down the number one issue is developers not calling .Dispose() on disposable objects. Ever since .NET was released, I have been preaching how important this is. If not done properly, it’s most likely to create virtual memory issues that will eventually cause the application to stop and possibly freeze server or users’ computer.
  • Azure CLI With Demo Creating VM Using Azure CLIJan 12, 2018. This articles shows a demo of creating virtual machine in Azure using Azure CLI with explanation of Azure CLI cmdlets.
  • Availability Set, Fault Domains And Update Domains In Azure Virtual MachineJan 06, 2018. This article explains why one must plan Availability Set, Fault Domain and Update Domain while configuring Virtual Machines for Azure.
  • Share Code Between ASP.NET Core MicroServicesJan 04, 2018. Microservice architecture or microservices is a method of developing software applications as a suite of independently deployable, small, modular services in which each service runs a unique process and communicates through a well-defined, lightweight mechanism to serve a business goal.
  • Getting Started With React ProgrammingJan 01, 2018. React is a JavaScript library for building user interfaces. It was developed by Facebook to facilitate building with interactive, stateful and reusable UI components.
  • Create Your First Virtual Machine (VM) Using Azure PortalDec 28, 2017. In this article, we will talk about different free Azure subscriptions available for developers and end users. With this, we will also learn how we can create a virtual machine using Azure Portal.
  • Migrate Your Applications To Azure Virtual MachinesDec 27, 2017. Learn how to migrate your applications to Azure virtual machines.
  • Consuming ASP.NET Core 2.0 Web API Using HttpClientDec 26, 2017. We’ll create a library to wrap the functionality of HttpClient. I’ll use builder pattern for this purpose. Add a class with methods for storing parts of HttpClient.
  • Some Useful JavaScript Methods, Variable And Objects In Sharepoint 2013Dec 21, 2017. In my previous blog, I explored _spPageContextInfo variable properties. This time, I am exploring some SharePoint-provided useful methods and objects in JavaScript.
  • Configure Identity In ASP.NET Core 2.xDec 15, 2017. Identity is a membership system that allows us to add login functionality to our application. In my previous article, I have explained about the overview of Identity in ASP.net Core. There are some default behaviors that can be overridden easily in our application in ConfigureService method of startup class.
  • Knowing When To Reflect With Caller Info AttributesDec 10, 2017. If you've been around C# long enough, you've probably had a need at one time or another to figure out some information about code that's being executed. It might be a method name, the file being executed, or even more specific details like the line number.
  • Understanding Classes In KotlinDec 07, 2017. In the above example, I have created a nested class ‘Nestedclass’ which has a data member ‘b’ and a member method show(),now the object of nested class can access member of nested class only.
  • Dynamic Search In DataGridViewNov 30, 2017. This article will help you to understand the Dynamic Search method in DataGridView in C#.
  • Getting Started With Kotlin - BasicsNov 29, 2017. Google announced Kotlin as an official language for Android Application development in Google I/O 2017.Kotlin is a statically-typed language, developed by JetBrains and Open source Contributors in the 2011, that runs on JVM(Java Virtual Machine) and is compiled to JavaScript source code. It is very suitable for server-side application development with full compatibility of Java frameworks. You can use multiple frameworks like - Spring, Vert.x, Ktor etc. for web application development.
  • Building Entity Framework Disconnected Generic RepositoryNov 29, 2017. The repository pattern separates and retrieves data model mapping logic from the business logic. We will create a repository class for each entity class in our application. All these classes usually have a main group of equals methods.
  • Passing Data Between Components - Day TwoNov 29, 2017. We have seen that we can pass the data between the components using the @Input and @Output directives and using event emitters. Let’s see the other two methods - @View child and the services which can be used to pass the data between components.
  • Virtual Entity - New Way Of Integration - Part TwoNov 28, 2017. This is our second article regarding virtual entity, if you have not checked our earlier article, we suggest you check that first here. In this article we are going to demonstrate about create OData Web API without Entity Framework and hosting it in Azure to consume into Dynamics 365. Let say we have employees data that we want to show into virtual entity, so let’s get started!!
  • Passing Data Between ComponentsNov 28, 2017. Article explains 2 Methods of communication between the components .
  • Creating A Windows Virtual Machine On The Azure Portal And Expanding The OS DiskNov 28, 2017. This article demonstrates how to create a Virtual Machine on the Azure portal and also how to expand the OS Disk for high space availability.
  • Adding A DataDisk To Our Virtual MachineNov 28, 2017. This article shows how to add a disk to our Virtual Machine for additional data storage.
  • Generate Python Wrapper For C# Methods Using ReflectionNov 27, 2017. In this article, we will generate a Python wrapper around C# methods using reflection methods of .NET framework.
  • Virtual Entity - New Way Of Integration - Part OneNov 27, 2017. In this article, we are going to discuss Virtual Entities.
  • Implementing Field Mapping Using Xrm.WebApiNov 24, 2017. In this article, we are going to provide sample code for using Xrm.WebApi retrieve method.
  • Using Xrm.WebAPI In Dynamics 365/CRMNov 22, 2017. With the release of Dynamics 365 update 9.0, now we have a new library to implement WebApi methods using Xrm.WebApi. Instead of writing complete request, now we can just use direct CURD methods from WebApi.
  • Creating A Data Science Virtual Machine(DSVM) For Linux In The Azure PortalNov 21, 2017. In this article, I am going to demonstrate how to create the Data Science Virtual Machine for Linux on the Azure Portal and connect the DSVM to visualize the VM using X2Go Client Software.
  • Create App Using Xamarin.Android Using C# - Part FourNov 17, 2017. Xamarin.Android has native user interface controls. These controls can be easily added to Xamarin.Android apps using the Android Designer or programatically via XML layout files. Xamarin.Android exposes all of the user interface object properties and methods in C#.
  • Creating A Data Science Virtual Machine(DSVM) On The Azure PortalNov 16, 2017. This article describes what a Data Science Virtual machine is and demonstrates how to create it in the azure portal.
  • Passing Parameters To Middleware In ASP.NET Core 2.0Nov 15, 2017. I discussed in an earlier post that it is good practice to define middleware in a separate class and add to the pipeline using extension methods. We may also need to pass information to our middleware classes though and I’ve come across two patterns for this when digging into ASP.NET Core source code and other samples online.
  • What Is Struct And When To Use Struct In C#Nov 15, 2017. 'Struct' keyword is used to create a structure. A structure can contain variables, methods, static constructor, parameterized constructor, operators, indexers, events, and property. A structure can not derive/inherit from any structure or class. A structure can implement any number of interfaces. Structures provide better performance.
  • Azure Table Storage In ASP.NET Core 2.0Nov 14, 2017. Add a class to encapsulate storage access. Add a private helper method to access storage
  • ASP.NET Core 2.0 MVC FiltersNov 13, 2017. Filter runs after an action method has been selected to execute. MVC provides built-in filters for things like authorization and caching. Custom filters are very useful to encapsulate reusable code that you want to run before or after action methods.
  • Debugging Tips - Part ThreeNov 06, 2017. While working on a complex code, we often come across situations where you need to debug lots of code to find/fix the issue(s). That also includes going through lots of methods (probably related or unrelated). .NetFramework provides a way to avoid unwanted "Step in" through the methods. Using DebuggerStepThrough (using System.Diagnostics) attribute, you can skip debugging of unwanted methods and reduce the debugging time to some extent.
  • Binding DropDown List Using Tuple In ASP MVCNov 05, 2017. Tuple is a generic static class that was added to C# 4.0 and it can hold any amount of elements, and they can be any type we want. So using tuple, we can return multiple values.One great use of tuple might be returning multiple values from a method. It provides an alternative to "ref" or "out" if you have a method that needs to return multiple new objects as part of its response.
  • Introduction To ASP.NET MVC Model BindingNov 02, 2017. Asp.NET MVC model binder allow you to map http request data with model. HttpRequest data means when user makes a request with form data from browser to controller at that time model binder works as middle man to map the incoming http request with controller action method.
  • Hosting Website With Filezilla To AzureOct 19, 2017. We can use the FTP client Filezilla for website hosting to Azure. And it is an FTP method. And sometimes we may face some errors in it. And the solution is also mentioned in this article.
  • Power BI - Get Data From SharePoint List / LibraryOct 16, 2017. In this article, we will explore two methods to get data from SharePoint List / Library in Power BI.
  • C# 7.0 And C# 7.1 New Features - Part TwoOct 16, 2017. This article explains the new features of C# 7.0 & C#7.1. It covers new features like Discards, Pattern Matching, Generalized async return types, Async Main (Main Method returning Task), Infer Tuple Element Names, Default Literal Expressions & Type Inference and Pattern Matching with Generics.
  • Angular Components (With Examples)Oct 12, 2017. A Component is nothing but a simple typescript class, where you can create your own methods and properties as per your requirement which is used to bind with an UI (html or cshtml page) of our application.
  • How To Use Fiddler With ASP.NET Web API TestingOct 11, 2017. If you are developer, tester or a manager, sometimes understanding the various methods of API can be a challenge when building and consuming the application.
  • Cloud Databases In Azure - Part OneOct 11, 2017. In my previous articles on Azure, I have explained about the IaaS features of Azure i.e. creating Virtual Machines, databases etc. In this article, we will see the Introduction of Cloud Databases i.e. PaaS side of Microsoft Azure.
  • Deploying A Virtual Machine Using Azure PowerShellOct 11, 2017. Azure PowerShell provides a set of cmdlets that use the Azure Resource Manager model for managing your Azure resources. You can use it in your browser with Azure Cloud Shell, or you can install it on your local machine and use it in any PowerShell session. It is optimized for managing and administering Azure resources from the command line, and for building automation scripts that work against the Azure Resource Manager.
  • Deploying A Virtual Machine Using Azure CLI 2.0Oct 11, 2017. In this article, we will see how to deploy a Virtual Machine in Azure using Azure CLI 2.0 in the portal itself.
  • Custom Script Extension For WindowsOct 11, 2017. In this article, we will see how to work with custom script extension in Azure Virtual Machines.
  • Shared Storage Using Azure File ServiceOct 10, 2017. In most cases, the virtual disks we are creating for an Azure VM are connected to that particular VM with a 1:1 relationship which can’t be accessed by another VM at the same time. In case you need a shared storage by multiple VMs you should use Azure File Shares. Azure File shares can be mounted concurrently by cloud or on-premises deployments of Windows, Linux, and macOS. This is mostly used in case of any requirement of something like a shared application setting or if you need to share any tools or utilities between developers and administrators.
  • ASP.NET Core 2.0 Session StateOct 09, 2017. Using an empty project from a previous post, amend Startup class ConfigureServicee() method, and add services for session and its backing store.
  • Managing Virtual Machine DisksOct 08, 2017. In this article, we will see how to add additional data disks and scale existing in a Virtual Machine.
  • Deploying A Virtual Machine Using Unmanaged DiskOct 07, 2017. In the previous article, we deployed a Windows VM using the managed disk. In this article, we are going to see how we can deploy a VM using an unmanaged disk. For demo purpose, I am using a Linux VM instead of windows here.
  • Deploying A Windows Virtual Machine In The Azure PortalOct 04, 2017. Azure Virtual Machine (VM) is one of the several types of on-demand, scalable computing resources that Azure offers. Typically, you choose a VM when you need more control over the computing environment than the other choices offer. Let's see how to create an Azure VM from the portal.
  • How To Use Postman With ASP.NET Core Web API TestingOct 04, 2017. If you are developer, tester, or a manager, sometimes understanding the various methods of API can be a challenge when building and consuming the application.
  • ASP.NET Core 2.0 Error PagesSep 29, 2017. Starting from an empty project, created in a previous post, amend the Configure() method of Startup class to use middleware needed for error handling. Below I’ve used a custom middleware (defined as lambda) to handle production exceptions.
  • How To Start VM Automatically In AzureSep 29, 2017. Virtual Machines provides flexibility to install and configure anything, any time and use it as you want. As well as all these features, VMs are costly so developers or managers of VMs needs to make the cost effective, for this Azure provides Automation Scripting to start and stop a VM automatically so that it will be cost effective besides it is flexible.
  • Create Value Object In C#Sep 28, 2017. Create a class that abstracts away (encapsulate) ‘data’ in your domain and provide methods to work on it. Below is a class I don’t consider a good Value Object.
  • How To Use Swagger With ASP.NET Core Web APIsSep 24, 2017. If you are developer, tester or a manager, sometimes understanding the various methods of API can be a challenge when building and consuming the application.
  • Create Immutable Type In C#Sep 14, 2017. A public constructor that accepts initialization data is required so that the client can pass-in minimum state for the type to be valid. Private constructor, on the other hand, is used by methods to construct a new object and set its entire state.
  • ASP.NET Core 2.0 EnvironmentsSep 12, 2017. Starting from an empty project, discussed in a previous post, modify the Configure() method to use the IHostingEnvironment to call different middleware based on current environment.
  • ASP.NET Core 2.0 MiddlewareSep 06, 2017. Create a Hello World app using ASP.NET Core Middleware. Middleware components are called in the order they appear in Configure() method; i.e., the order in which they're added to the pipeline. The response, on its way back to the client, also passes through the same middleware pipeline.
  • How Should We Store Images And Blob Files In SQL ServerSep 06, 2017. There is always a requirement from developers: How should I store images and BLOB files in SQL Server ? In this post let's explore the data types and methods used for storing Binary Large Objects also know as BLOBs, such as images and sounds, into SQL Server.
  • Getting Started With Bing Speech API In WPF ApplicationsSep 06, 2017. Cognitive services are a set of APIs that are designed to democratize artificial intelligence by enabling systems to see, hear, speak, understand and interpret our needs using natural methods of communication.
  • Setup Of Virtual Machines On Azure Using TerraformSep 01, 2017. Microsoft recently announced increased investment in integrating Terraform with Azure (Aug 2017). This is a continuation of Microsofts’ reach into the agnostic/multi-cloud cloud arena, where they are doing whatever it takes to help developers succeed in the cloud. It used to be the case that Azure was only for Micosoft developers - well no more. The crew in Redmond and every office around the globe are really pushing the open-source and 'Azure for everyone' opportunity.
  • Getting Started With Voice Of The CustomerAug 29, 2017. In any industry customer satisfaction plays a very important role. It provides a real picture about our happy and unhappy customers which helps us to manage and plan our business effectively. We can get a customer satisfaction matrix using different methods and one of them is to use customer satisfaction surveys.
  • Creating Login Form For Users With Image Uploading For Password RecallAug 27, 2017. The article is an alternate method of creating a login form where the conventional way of giving a password hint will be given as a question. In this, you can add an image which can be your hint if you forget your password.
  • Virtual Machine SizesAug 23, 2017. Virtual Machines are highly flexible such that they can be changed in their size and the performance based on the requirement of the user. The resources which we actually require can be decided by us and then the user can be able to scale up or down the Virtual Machine. When making changes to the Virtual Machine size, the cost that is charged for the Virtual Machine will also vary. Here the size of the Virtual Machine will include the number of cores, the Random-Access Memory, number of data disks, the IOPS range, SSD size, load balancing feature and premium disk support.
  • Custom Extension Method In C#Aug 23, 2017. Here, I am going to explain how to create and use the extension method.
  • Creating Virtual Machine Using PowerShellAug 22, 2017. This article is about the creation of Virtual Machines in the Azure Cloud Service with the help of PowerShell commands.
  • Swift Programming - Zero To Hero - Part ThreeAug 17, 2017. Statements are the building blocks of any program. We can perform any function with the help of statements, such as checking values or declaring variables, calling methods, or even creating objects.
  • Custom Model Binding In ASP.NET Core MVCAug 17, 2017. Model binding in MVC maps HTTP request data to the parameters of the controller's action method. The parameter may either be of simple type like integers, strings, double etc. or complex types. MVC binds the request data to the action parameter by parameter name.
  • Overview Of Filters In MVC - Part TwoAug 10, 2017. In ASP.NET MVC, a user request is routed to the appropriate Controller and Action Method. We need situations where we want to execute some logic before or after an action method executes. ASP.NET MVC provides Filters for this.
  • Deploying An Ubuntu Server 16.04 LTS Virtual Machine Using Microsoft AzureAug 08, 2017. In computing, a Virtual Machine is an emulation of a computer system. Virtual machines are based on computer architectures and provide functionality of a physical computer. Their implementations may involve specialized hardware, software, or a combination. Azure Virtual Machine (VM) is one of several types of on-demand , scalable computing resources that Azure offers.
  • Overview Of Filters In MVCAug 06, 2017. In ASP.NET MVC, a user request is routed to the appropriate controller and action method. We need situations where you want to execute some logic before or after an action method executes. ASP.NET MVC provides filters for this.
  • Introduction To jQuery And Web API 2 Controller’s Method Relationship Using jQuery AJAX In ASP.NET MVC RazorAug 06, 2017. ASP.NET Web API is a smart framework to build HTTP services which can be consumed by Multi platform clients including desktops or smart phone devices, irrespective of browsers or Operating Systems being used.
  • Understanding Virtual Machines In AzureAug 06, 2017. It is an operating system or application environment that is installed on software, which reproduces dedicated hardware. End user has the same experience on a virtual machine as they would have on dedicated hardware.
  • Building Your Own Container ImagesAug 04, 2017. Here, we will be building our own container images. For doing this we have two different ways, namely manual method and automated method. Let us see both ways.

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