Ricardo Mauro - rmauro.dev {blog}

rmauro.dev {blog}

Ricardo Mauro

Oracle ODP.NET with truly Async Methods in C#

Oracle ODP.NET with truly Async Methods in C#

Oracle's ODP.NET 23c Dev (or Oracle.ManagedDataAccess.Core) release brings genuine async/asynchronous methods to support to database interactions in C#, revolutionizing the way developers work with Oracle databases. Under PreRelease until today : 2023-08-24 Async/Await in C# Before delving into the specifics of ODP.NET 23c Dev for

Oracle PIVOT Command - Turn Rows into Columns

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Oracle PIVOT Command - Turn Rows into Columns

Discover the technical prowess of Oracle's PIVOT command, a robust feature that efficiently converts rows into columns. This blog post delves into the syntax, use cases, and practical examples to illustrate how PIVOT simplifies data analysis and reporting in Oracle databases. Understanding the PIVOT Command The PIVOT command is an

C# Get JWT Token from Request .NET 6

C# Get JWT Token from Request .NET 6

This blog post will explore extracting a JWT token from incoming requests using C#. How to Get JWT Token from Request using C#

Oracle JSON_TABLE Transforming JSON into Table

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Oracle JSON_TABLE Transforming JSON into Table

The function JSON_TABLE allows us to transform JSON data into a table relational format. This article will explore the Oracle JSON_TABLE function and its syntax and provide examples to demonstrate its usage and capabilities.

Oracle MERGE Statement SQL

Oracle MERGE Statement SQL

Oracle MERGE statement is one of those powerful commands which allows you to perform INSERT and UPDATE operations in a single statement based on specific conditions.

C# JWT Authentication .NET 6

C# JWT Authentication .NET 6

In this article, we will work on implementing C# JWT Authentication using .NET 7 - which also works for .NET 6, and preview .NET 8 - using ASP.NET Core.

DALL-E Art-Generator with C# .NET

DALL-E Art-Generator with C# .NET

In this blog post, we will explore the steps to develop a C# application using DALL-E model to generate images from text.

Getting Started with Serilog Custom Enrichers

Getting Started with Serilog Custom Enrichers

One of the key features of Serilog is the ability to Enrich Log Events with additional contextual information that can help in troubleshooting and debugging. In this blog post, we will explore how to create a Custom Enricher with Serilog to add custom properties to log events.

Getting Started with Chat GPT integration in a .NET C# Console Application

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Getting Started with Chat GPT integration in a .NET C# Console Application

With the use of C#, we can develop a console application that uses the Chat GPT model to generate human-like responses to input.

EMC square formula

Define Implicit and Explicit Operator - C# Tips

C# allows us to define Implicit and Explicit operators. Unlike casting Implicit and Explicit operators defines how C# should behave when encountering an equals sign. Implicit operator execution can be invoked when assigning a variable or calling a method. To use Explicit operator we should do the same as casting

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Calculate Time Ago with .NET C#

Here is a small extension method over System.DateTime that gives its relative time readable for humans, such as: * one minute ago * 2 minutes ago * one hour ago * 3 hours ago * 3 days ago Check out this extension method over the DateTime structure using switch patterns. public static string AsTimeAgo(

Health Checks on your ASP.NET Core Application

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Health Checks on your ASP.NET Core Application

Health Endpoint Monitoring pattern Health Check in .NET 5 is very simple. With just a few lines of code, you can set up everything to monitor the Health of our Application. Implement functional checks in an application that external tools can access through exposed endpoints at regular intervals. This can

SQL Injection na Prática - Executando o Ataque

SQL Injection na Prática - Executando o Ataque

Primeiro, você sabe (ou lembra-se) o que é SQL Injection? (for english version) Segundo OWASP.org (https://www.owasp.org/index.php/SQL_Injection). A SQL injection attack consists of insertion or "injection" of a SQL query via the input data from the client to the application. A successful SQL

Começando com Machine Learning - Escrevendo um Perceptron

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Começando com Machine Learning - Escrevendo um Perceptron

Você sabe o que é um Perceptron? Perceptron é um dos building blocks (componentes) da rede neural feed foward. Uma rede neural é essencialmente baseada em N Perceptrons. Segundo wikipedia: In machine learning, the perceptron is an algorithm for supervised learning of binary classifiers. A binary classifier is a function

C# Conversions - Casting, implicit and explicit conversion

Fist the data types available. int whole numbers long whole numbers (bigger range) float floating-point numbers double double precision decimal monetary values char single character bool boolean DateTime moments in time string sequence of characters Table of implicit conversion made by C#. From To sbyte short int long float double

Azure Kubernets - az cli

Azure Kubernets - az cli

Steps to create Azure Kubernet Services (AKS) though azure cli tool. Demo 1 // Create resource group az group create --name kbgroup2 --location eastus // Create AKS cluster az aks create \ --resource-group kbgroup2 \ --name kbcluster2 \ --node-count 1 \ --enable-addons monitoring \ --generate-ssh-keys Connect to the cluster #if you're in Azure Cloud Shell skip this

Demo - Azure Batch

Demo - Azure Batch

Creating the Resource Group az group create --name "az203_batch_demo001" --location CentralUS Creating the storage account az storage account create \ --name az203batchstoragexd \ --access-tier hot \ --https-only true \ --kind BlobStorage \ --location CentralUS \ --sku Standard_LRS \ --resource-group az203_batch_demo001 Creating the Batch Account az batch account create \ --name az203batchaccountxd \ --storage-account az203batchstoragexd

az cli (bash) create resource though Resource File

az cli (bash) create resource though Resource File

The resource file azuredeploy.json { "$schema": "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#", "contentVersion": "1.0.0.0", "parameters": { "storageAccountType": { "type": "string", "defaultValue": "Standard_LRS", "allowedValues": [ "Standard_LRS", "Standard_GRS", "Standard_ZRS", "Premium_LRS" ], "metadata": { "description": "Storage Account type" } }, "location": {

Conference API Sample

This is a sample API hosted by Microsoft. https://conferenceapi.azurewebsites.net/?format=json

Enable Local Cache in Azure Web App

Enable Local Cache in Azure Web App

What is Local Cache in Azure WebApp? Local cache in Azure Web is really a cache that caches the storage of your Web App. How to enable it? To enable local cache you should go to your Azure Subscription them navigate to your Web App that you wishs to enable

C# DateTime Cheat sheet - ToString() Format

C# DateTime Cheat sheet - ToString() Format

Cheat sheet with C# DateTime formats. using System; using System.Globalization; public class Program { public static void Main(string[] args) { DateTime dt = DateTime.Now; string[] format = { "d", "D", "f", "F", "g", "G", "m", "r", "s", "t", "T", "u", "U", "y", "dddd, MMMM dd yyyy", "ddd, MMM d \"'\"yy", "dddd,

Demo WebJob Azure - CRON expressions

Demo WebJob Azure - CRON expressions

CRON expressions Azure Functions uses the NCronTab library to interpret CRON expressions. A CRON expression includes six fields: {second} {minute} {hour} {day} {month} {day-of-week} Each field can have one of the following types of values: Type Example When triggered A specific value 0 5 * * * * at hh:05:00 where hh

Enable Azure Disk Encryption though az-cli

Enable Azure Disk Encryption though az-cli

Create Azure Key Vault service az keyvault create \ --name "kvDemo006" \ --resource-group "demo001" \ --location centralUS \ --enabled-for-disk-encryption True Enable disk encryption on VM az vm encryption enable \ --resource-group "kvDemo006" \ --name "devUScWeb003" \ --disk-encryption-keyvault "demo006" \ --volume-type "all" Show disk encryption az vm encryption show \ --resource-group "demo006" \ --name "devUScWeb003"`