Easy, Automated Code Coverage for .NET Core

<input @bind="username" />

<InputText @bind-Value="Model.Name" />

RZ10008 The attribute 'onchange' is used two or more times for this element.
Attributes must be unique (case-insensitive). 
The attribute 'onchange' is used by the '@bind' directive attribute.

<input value="@username" @onchange="CheckUsername" />

<InputText
  Value="@Model.Name"
  ValueExpression="()=>Model.Name"
  ValueChanged="(string s)=>CheckUsername(s)" />  
<ValidationMessage For="() => Model.Name" />

<input @bind="username" @bind:after="CheckUsername" />

<InputText
  @bind-Value="Model.Name"
  @bind-Value:after="CheckUsername" />   
<ValidationMessage For="() => Model.Name" />

async Task CheckUsername()
{
    if (!string.IsNullOrWhiteSpace(Model.Name))
    {
        _messageStore?.Clear(EditContext.Field(nameof(UserDto.Name)));


        var response = await HttpClient.PostAsJsonAsync(
                    UserValidationUrl,
                    new UserDto { Name = Model.Name });
        var responseContent = await response.Content.ReadAsStringAsync();
        if (string.Equals(responseContent, "false", StringComparison.OrdinalIgnoreCase))
        {
            _messageStore?.Add(EditContext.Field(nameof(UserDto.Name)), 
                      $"`{Model.Name}` is in use. Please choose another name.");        
        }

        EditContext.NotifyValidationStateChanged();
    }
}

using System;
Console.WriteLine("Hello, World!");
Console.ReadLine();

dotnet publish -p:PublishSingleFile=true -r win-x64 -c Release --self-contained true

dotnet publish -p:PublishSingleFile=true -r win-x64 -c Release --self-contained false

<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>net6.0</TargetFramework>
    <PublishSingleFile>true</PublishSingleFile>
    <SelfContained>true</SelfContained>
    <RuntimeIdentifier>win-x64</RuntimeIdentifier>
    <PublishReadyToRun>true</PublishReadyToRun>
  </PropertyGroup>
</Project>

dotnet publish -p:PublishSingleFile=true -r win-x64 -c Release --self-contained true -p:PublishTrimmed=true

dotnet publish -p:PublishSingleFile=true -r win-x64 -c Release --self-contained true -p:EnableCompressionInSingleFile=true

In this beginner level course, you will learn the foundational elements of a microservices architecture by incrementally building a real microservices based application with the .NET platform, step by step. 

var numbers = new List<int> { -7, 1, 5, -6 };

var sortedNumbers1 = numbers.OrderBy(n => n);
var sortedNumbers2 = numbers.OrderByDescending(n => n);

public static IOrderedEnumerable<TSource> OrderBy<TSource,TKey>(
   [NotNull] this IEnumerable<TSource> source,
   [NotNull] Func<TSource,TKey> keySelector)

var sortedNumbers3 = numbers.Order();
var sortedNumbers4 = numbers.OrderDescending();

public static IOrderedEnumerable<T> Order<T>(this IEnumerable<T> source)
public static IOrderedEnumerable<T> OrderDescending<T>(this IEnumerable<T> source)

public class User
{
   public string Name { set; get; }
   public int Age { set; get; }
}

List<User> users = new()
                           {
                               new User { Name = "User 1", Age = 34 },
                               new User { Name = "User 2", Age = 24 },
                           };

var orderedUsers = users.Order();

public class User : IComparable<User>
{
    public string Name { set; get; }
    public int Age { set; get; }

    public int CompareTo(User? other)
    {
        if (ReferenceEquals(this, other))
        {
            return 0;
        }

        if (ReferenceEquals(null, other))
        {
            return 1;
        }

        var nameComparison = string.Compare(Name, other.Name, StringComparison.Ordinal);
        if (nameComparison != 0)
        {
            return nameComparison;
        }

        return Age.CompareTo(other.Age);
    }
}

var orderedUsers2 = users.OrderBy(user => user.Name).ThenBy(user => user.Age);

Clean Code concepts adapted for .NET / .NET Core 👍 

• تولید خودکار آزمون‌های واحد NUnit
• تهیه آزمون واحد جهت کار با محتوای فایل‌ها
• آزمون واحد Entity Framework به کمک چارچوب تقلید
• استفاده از shim و stub برای mock کردن در آزمون واحد
• آزمون واحد در MVVM به کمک تزریق وابستگی
• بررسی میزان پوشش آزمون‌های واحد به کمک برنامه PartCover  
• قالبی برای ایجاد آزمون‌های NUnit مخصوص ReSharper
• آشنایی با تست واحد و استفاده از کتابخانه Moq
• WatIn - Web Application Testing in .Net 
• آموزش Coded UI Test #1 
• آشنایی با Should Library
• آماده سازی زیرساخت تهیه Integration Tests برای ServiceLayer 

 string data = null;
var result = data ?? "value";

if (data == null)
{
    data = "value";
}
var result = data;

class Response
{
    public string Result { set; get; }
    public int Code { set; get; }
}

 
class WebRequest
{
    public Response GetDataFromWeb(string url)
    {
        // ...
        return new Response { Result = null };
    }
}

 var webData = new WebRequest().GetDataFromWeb("https://www.dntips.ir/");
if (webData != null && webData.Result != null)
{
    Console.WriteLine(webData.Result);
}

 if (webData?.Result != null)
{
    Console.WriteLine(webData.Result);
}

 if (x != null)
{
   x.Dispose();
}

 x?.Dispose();

 var copy = OnMyEvent;
if (copy != null)
{
   copy(this, new EventArgs());
}

 OnMyEvent?.Invoke(this, new EventArgs());

 var code = webData?.Code;

 if (webData?.Code > 0)
{

}

 int count = response?.Results?.Count ?? 0;

 int? x = 10;
//var value = x?.Value; // invalid
Console.WriteLine(x?.ToString());

 if (response != null && response.Results != null && response.Results.Addresses != null
  && response.Results.Addresses[0] != null && response.Results.Addresses[0].Zip == "63368")
{

}

 if(response?.Results?.Addresses?[0]?.Zip == "63368")
{

}

 public void DoSomething(Customer customer)
{
    string address = customer?.Employees
                  ?.SingleOrDefault(x => x.IsAdmin)?.Address?.ToString();
    SendPackage(address);
}

 public void DoSomething(Customer customer)
{
   Contract.Requires(customer != null); 
   string address = customer.GetAdminAddress();
   SendPackage(address);
}