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Add common patterns for field keyword in C# 14 #55777

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7402ef0
Add common patterns for field keyword in C# 14
gidadomukhtar Aug 28, 2026
2cfb00b
fix: correct markdown formatting in field keyword patterns section
gidadomukhtar Aug 28, 2026
e9607eb
fix: use null-safe chaining in Email normalization example
gidadomukhtar Aug 28, 2026
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25 changes: 25 additions & 0 deletions docs/csharp/whats-new/csharp-14.md
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Original file line number Diff line number Diff line change
Expand Up @@ -90,6 +90,31 @@ public string Message
get;
set => field = value ?? throw new ArgumentNullException(nameof(value));
}
```
### Common patterns with `field`

**Lazy Initialization:**
```csharp
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public SqlConnection Connection
{
get => field ??= new SqlConnection("connection-string");
}
public string DisplayName
{
get;
set
{
if (field == value) return;
field = value;
OnPropertyChanged();
}
}
public string Email
{
get;
set => field = value?.Trim()?.ToLowerInvariant() ?? string.Empty;
}

```

You can declare a body for one or both accessors for a field backed property.
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