Category Archives: Programming

programming

C# – First steps with C# and .NET – part 057.

If you like the NumPy package from python, then in this tutorial, I will show you how to use the NumSharp package. You can read more about this package on the GitHub webpage. Let’s see some definitions and save and load features with this package:

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using System;
using NumSharp;
 
namespace NumSharp001
{
    internal class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Hello World using the NumSharp package!");
            Console.WriteLine("basic definitions ");
            var array001 = np.full(5, 6); //[5, 5, 5 .. 5]
            Console.WriteLine("This array001 variable has these 6 values : " + array001);
            var array_zeros = np.zeros(6);
            Console.WriteLine("This array_zeros variable has these 6 values : " + array_zeros);
            var array_arange = np.arange(6);
            Console.WriteLine("This array_arange variable has these 6 values : " + array_arange);
            var matrix_3x3 = np.zeros((3, 3));
            Console.WriteLine("This matrix_3x3 variable has these values : " + matrix_3x3);
            Console.WriteLine("Save array to disk");
            Console.WriteLine("NumSharp cannot save arrays has more than int byteMaxSize = 2_147_483_591 elements");
            NDArray disk_array = new double[]{1,2,3};
            disk_array.ToString();
            np.Save((Array)disk_array, "my_array.npy");
            Console.WriteLine("Load array from disk.");
            NDArray load_array = np.Load<double[]>("my_array.npy");
            var disk_load_array = load_array.ToString();
            Console.WriteLine(disk_load_array);
        }
    }
}

The result of this running source code will create… Read More »

C# – First steps with C# and .NET – part 056.

If you install the Visual Code and start a new project, you may see this on the Program.cs file.

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// See https://aka.ms/new-console-template for more information
Console.WriteLine("Hello, World!");

It is a new feature to speed your start development step. Using the command dotnet run will work well. This feature is enabled in your csproj file type and will include all you need to… Read More »

C# – First steps with C# and .NET – part 053.

Today, I will show you how to create the debug and release EXE file type and fix errors on your projects. With these two commands, you will create the EXE file type for debugging and releasing the project.

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C:\CSharpprojects\FreeRAM>dotnet publish -c Debug -r win10-x64
Microsoft (R) Build Engine version 16.11.3+5d7fe36cf for .NET
Copyright (C) Microsoft Corporation. All rights reserved.
 
  Determining projects to restore...
  Restored C:\CSharpprojects\FreeRAM\FreeRAM.csproj (in 50.52 sec).
  FreeRAM -> C:\CSharpprojects\FreeRAM\bin\Debug\netcoreapp3.1\win10-x64\FreeRAM.dll
  FreeRAM -> C:\CSharpprojects\FreeRAM\bin\Debug\netcoreapp3.1\win10-x64\publish\
 
C:\CSharpprojects\FreeRAM>dotnet publish -c Release -r win10-x64
Microsoft (R) Build Engine version 16.11.3+5d7fe36cf for .NET
Copyright (C) Microsoft Corporation. All rights reserved.
 
  Determining projects to restore...
  All projects are up-to-date for restore.
  FreeRAM -> C:\CSharpprojects\FreeRAM\bin\Release\netcoreapp3.1\win10-x64\FreeRAM.dll
  FreeRAM -> C:\CSharpprojects\FreeRAM\bin\Release\netcoreapp3.1\win10-x64\publish\

To fix errors on your project you can use this command:

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C:\CSharpprojects\FreeRAM>dotnet restore
  Determining projects to restore...
  Restored C:\CSharpprojects\FreeRAM\FreeRAM.csproj (in 789 ms).

Sometimes the upgrade of… Read More »

C# – First steps with C# and .NET – part 052.

Today I will show you a simple example bubble sort algorithm. First, create a new C# console project with the name BubbleSort001. About the bubble sort algorithm, you can read more on the Wikipedia webpage. Let’s see the source code:

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using System;
namespace BubbleSort001
{
    class Program
    {
    // create a class for the bubble sort algorithm
    static void BubbleSort001(int[] array)
    {
        Console.WriteLine("Bubble sort example algorithm!");
        // start a point for sorting
        int count = 0;
        // for each element in the array then use two loops
        for (int i = array.Length -1; i > 0; i--)
        {
            for (int j = 0; j < i; j++)
            // condition for sorting
            if(array[j] > array[j + 1])
            {
                // use a temp buffer to translate values
                int temp = array[j];
                array[j] = array[j + 1];
                array[j + 1] = temp;
                // counting each steep
                count++;
            }
        }
    }
    // testing the class BubbleSort001
    static void Main(string[] args)
    {
        // define array for sorting
        int[] array = {3,2,1,5,4};
        // print the array
        foreach (int nr in array)
            Console.Write(" " + nr);
        Console.WriteLine();
        // use the class and sort the array
        BubbleSort001(array);
        // print the result
        foreach(int nr in array)
            Console.Write(" " + nr);
    }
    }
}

The result of the running source code is this:

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BubbleSort001>dotnet run
3 2 1 5 4
Bubble sort example algorithm!
1 2 3 4 5

C# – First steps with C# and .NET – part 050.

In this tutorial, I will show you how to receive network traffic with a simple C# code source. First, create one folder named NetConsole and go in this with these commands:

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mkdir NetConsole
cd NetConsole

Run the install for DotNet, you can add a package if you want:

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NetConsole>dotnet new --install .\
 
Welcome to .NET 5.0!
---------------------
SDK Version: 5.0.411
...

You can see the version of this project and… Read More »