What are the best practices for C# development?

Question

Accepted Answer

**C# best practices** — write clean, maintainable code.

**1. Naming conventions:**
```csharp
// PascalCase for public members
public string UserName { get; set; }

// _camelCase for private fields
private readonly ILogger _logger;

// camelCase for parameters and locals
void Process(string input, int count) { }
```

**2. Use async/await properly:**
```csharp
// Always await async methods
await GetDataAsync();

// Don't use .Result or .Wait()
```

**3. Use LINQ wisely:**
```csharp
// Good — fluent, readable
var result = list
    .Where(x => x > 5)
    .OrderBy(x => x)
    .Select(x => x * 2);
```

**4. Handle exceptions properly:**
```csharp
// Catch specific exceptions
catch (HttpRequestException ex) { }

// Don't catch Exception unless necessary
```

**5. Use dependency injection:**
```csharp
// Good — inject dependencies
public class Service(IRepository repo) { }

// Bad — new inside class
public class Service { var repo = new Repository(); }
```

**6. Write tests:**
```csharp
[Fact]
public void ShouldCalculateTotal()
{
    var service = new OrderService();
    var total = service.CalculateTotal();
    Assert.Equal(100, total);
}
```

C#: What are the best practices for C# development?