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Angular CLI Commands - Cheat Sheet

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Angular CLI (Command Line Interface) is one of the powerful tool that allows you to perform a lot of actions in an Angular project by using simple commands. We can use the CLI tool directly in a command shell, or indirectly through an interactive UI such as Angular Console.  The Best Advantage is that, can avoid manual process to create lot of stuff like create components, directives, feature modules, services... etc.  It automatically recompiles the source code files and refreshes the app in the browser.  Let's see, how to install CLI tool and what are those CLI commands. Installing the CLI is very quite easy. All we need to do, is to run the below command in Terminal or Console. It will install the CLI tool globally with respective version. Here we need to know two things before installing the CLI tool. We can install latest version or any version released by angular team based on your project need. Check the Versions list.✋ Angular CLI Setup  1. Globally - To ins...
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Difference of High-Level Design (HLD) and Low-Level Design (LLD)

High-Level Design (HLD) and Low-Level Design (LLD) are software design concepts that are not specific to any programming language. However, to illustrate the differences between HLD and LLD, we can use C# programming language examples. Suppose we are designing a software system that involves creating a payment gateway application in C#.  Here are examples of HLD and LLD for this system: High-Level Design (HLD): Define the functional requirements of the payment gateway system, such as processing payment transactions, handling errors, and providing a user interface. Identify the non-functional requirements, such as performance, scalability, and security. Identify the key components of the payment gateway system, such as payment processing engine, database, user interface, and error handling. Create an architecture diagram that shows how these components will fit together to form the payment gateway system. In HLD, the focus is on defining the system's overall structure and architectu...
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Restrict Special Characters in Windows Application using c#

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Example : In this application it will remove all the special characters when we trying to copy paste the special characters. Lets see how it is possible with Copy,paste. Please follow these steps : 1. Create a New Windows Form with the name of 'Form1', and take one label with the name of 'lblName' and one textbox with the name of 'txtName' and one button with the name of 'btnValidate'. Please see below image. 2. Add a code in TextChanged event for that textbox. Here my textbox name is 'txtName' in that I have added a event like . private void txtName_TextChanged(object sender, EventArgs e) {       txtName.Text = RemoveSpecialCharacters(txtName.Text); } 3. In that event you observed method name of 'RemoveSpecialCharacters'.Basically it will remove all the special characters when you are copy paste in to the textbox.       private string RemoveSpecialCharacters(String inString)       ...
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Naming Conventions

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Naming Conventions is very important for any application for better readability of  code. What is Naming Convention ?  Naming conventions are general rules applied when creating text scripts for software programming. They have many different purposes, such as adding clarity and uniformity to scripts, readability for third-party applications, and functionality in certain languages and applications. They range from capitalization and punctuation to adding symbols and identifiers to signify certain functions. Advantages of Naming Conventions are : 1. Consistency 2. Better understanding the code 3. Readability 4. Automation Types of Naming Conventions:  1. camelCase : First letter should be lower case. 2. PascalCase :   All words should be upper case. 3. kebab-case : Use dash symbol between word to word with lower case. 4. snake_case : Use underscore symbol between word to word with lower case. How and where these naming conventions will use ? Please check this pos...
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Restrict Special Characters Using JavaScript By Copy,Paste

Restrict Special Characters using copy,paste events in JavaScript. Please follow these steps: 1. Create a textbox with the name of txtValidation and add event by the name of onpaste to that textbox. <asp:TextBox ID="txtValidation" runat="server" onpaste="return Validate(this.value);"></asp:TextBox> 2. Create a Function to that event.  <script type="text/javascript">         function Validate(Value) {             var pastedData = window.clipboardData.getData('Text');             var reg = /^[a-zA-Z0-9 ]*$/             if (!reg.test(pastedData)) {                 alert('Not Accept Special Characters');                 return false;             }         }     </script> Some of the spec...
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Create a function to convert from string to Decimal using JavaScript

Create a function to convert a string to decimal using JavaScript. Javascript function parseStringToDecimal(inputValue: string): Number { let value: number; if (inputValue === '0.00' || Number(inputValue) === 0.00) { value = 0.00; } else if (inputValue === '') { value = null; } else { value = parseFloat(inputValue.toString().replace(/,/, '')); } return value; } Expected Result :  Example const value = parseStringToDecimal("1,000.256"); console.log(value); Output :  1000.256
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How to Create Custom DialogBox using JQuery

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Example: In this application I will show you how to create Dialog box using  JQuery . Mostly we use JavaScript Default confirmation box for yes or no options.But we can't add another option into that Default Confirmation box in that requirement we want to create custom Dialog box. For my requirement I need three button Yes,No and Cancel Options in Dialog Box. Lets see how it possible with JQuery 1. Create a new webform with the name of 'UIDialog.aspx'. 2. Add a JQuery and Css plugins for custom Dialog Box below head tag. Please see in code. 3. Create a function in that I have three buttons in aspx page. Please see below code. <head runat="server">     <meta name="viewport" content="width=device-width, initial-scale=1">     <title>jQuery UI Dialog - Modal confirmation</title>     <link href="Css/styles.css" rel="stylesheet" type="text/css" />     <script type=...
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CORS (Cross-Origin Resource Sharing) in .NET

CORS stands for Cross-Origin Resource Sharing. It is a security feature that allows web pages from one domain to access resources (such as APIs) on another domain. When a web page attempts to access a resource on a different domain, the browser will send a CORS request to the server hosting the resource. The server can then choose to allow or deny the request based on the domain of the requesting web page. CORS is important because it helps to prevent malicious attacks, such as cross-site request forgery (CSRF) and cross-site scripting (XSS). By enforcing same-origin policies, CORS helps to protect users from unauthorized access to their sensitive data. We use CORS to enable cross-domain communication between web pages and APIs. Without CORS, web pages would only be able to communicate with APIs hosted on the same domain. With CORS, we can make APIs available to web pages on other domains, allowing for a more flexible and dynamic web. CORS is co...
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Configure the API gateway in Microservices Architecture with example in .NET Core

API Gateway in Microservices Architecture In a microservices architecture, an API Gateway is a layer that sits between clients and the microservices that provide the necessary functionalities. It acts as a single entry point for all client requests and handles communication between the clients and the underlying microservices. The API Gateway serves as a mediator between the client and the backend services. It receives incoming requests from clients and routes them to the appropriate microservice. It also handles authentication, authorization, load balancing, and other cross-cutting concerns such as rate limiting, caching, and request/response transformation. By providing a single entry point and a unified interface for clients, the API Gateway simplifies client access to the system and helps to decouple the client code from the underlying microservices. It also provides a central point for monitoring and logging of all the incoming requests, making it easier to identify and troublesho...
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Create Custom Form Control for ng-select in Angular

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How to Create Custom Form Control in Angular  Why we create custom form control ? Normally, we used to create custom form control for re-usability.  The best advantage is that to add common functionality and features in this custom form control and extend the functionality as per our need and requirement.  And we can use everywhere into the application. But this example will tell you how to create custom form control to extend the functionality of  angular ng-select component.  We are adding a feature for this control, multi selection along with checkbox. Before that, we need to know what is the basic syntax of creating custom form control in angular. So, we start by implementing the ControlValueAccessor interface from @angular/forms into the component. This interface has three functions that need to be implemented and one optional functional. writeValue(obj: any): void { } registerOnChange(fn: any): void ...
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