C# code snippets

Some helpfull snippets in everyday development for collections, methods, Parallel class, properties and tasks.

Add to Visual Studio

Copy files repository or download from Release.

To add snippets to Visual Studio copy files to the origin VS C# snippets directory. For example, in my system this is:
D:\Program Files\Microsoft Visual Studio\2022\Community\VC#\Snippets\1049\Visual C#\

Use

Use by writing name part without extension from name.snippet. For example, for list.snippet write list and press [Tab] key.

Collections

1. list.snippet - Use of List{T}. T is int by default

   List<int> list = new List<int>();

2. dict.snippet - Use of Dictionary{TKey, TValue}. TKey is int, TValue is string by default

   Dictionary<int, string> dict = new Dictionary<int, string>();

3. bag.snippet - Use of ConcurrentBag{T}. T is int by default

   ConcurrentBag<int> bag = new ConcurrentBag<int>();

Methods

non-static

1. method1null.snippet - method with 1 argument and null-checking

   public void MyMethod(object arg)
   {
       if (arg == null)
       {
           throw new ArgumentNullException(nameof(arg));
       }
       // Your code here
       throw new NotImplementedException();
   }

2. method2null.snippet - method with 2 argument and null-checking

   public void MyMethod(object arg1, object arg2)
   {
       if (arg1 == null)
       {
           throw new ArgumentNullException(nameof(arg1));
       }
       if (arg2 == null)
       {
           throw new ArgumentNullException(nameof(arg2));
       }
       // Your code here
       throw new NotImplementedException();
   }

3. method3null.snippet - method with 3 argument and null-checking

   public void MyMethod(object arg, object arg2, object arg3)
   {
       if (arg == null)
       {
           throw new ArgumentNullException(nameof(arg));
       }
       if (arg2 == null)
       {
           throw new ArgumentNullException(nameof(arg2));
       }
       if (arg3 == null)
       {
           throw new ArgumentNullException(nameof(arg3));
       }
       // Your code here
       throw new NotImplementedException();
   }

static

1. smethod1null.snippet - static method with 1 argument and null-checking

   public static void MyMethod(object arg)
   {
       if (arg == null)
       {
           throw new ArgumentNullException(nameof(arg));
       }
       // Your code here
       throw new NotImplementedException();
   }

2. smethod2null.snippet - static method with 2 argument and null-checking

   public static void MyMethod(object arg1, object arg2)
   {
       if (arg1 == null)
       {
           throw new ArgumentNullException(nameof(arg1));
       }
       if (arg2 == null)
       {
           throw new ArgumentNullException(nameof(arg2));
       }
       // Your code here
       throw new NotImplementedException();
   }

3. smethod3null.snippet - static method with 3 argument and null-checking

   public static void MyMethod(object arg, object arg2, object arg3)
   {
       if (arg == null)
       {
           throw new ArgumentNullException(nameof(arg));
       }
       if (arg2 == null)
       {
           throw new ArgumentNullException(nameof(arg2));
       }
       if (arg3 == null)
       {
           throw new ArgumentNullException(nameof(arg3));
       }
       // Your code here
       throw new NotImplementedException();
   }

Parallel

1. forp.snippet - Parallel.For() default construction

   Parallel.For(0, length, (i, state) =>
   {
       // Your code here
   });

2. foreachp.snippet - Parallel.ForEach() default construction

   Parallel.ForEach(collection, (item, state) =>
   {
       // Your code here
   })

3. foreachpagg.snippet - Parallel.ForEach() construction with aggregation

   int aggregatedValue = 0;
   
   Parallel.ForEach(collection, () => 0, (item, state, localAgg) =>
       {
           // Your code here
           return localAgg;
       },
       (localAgg) => Interlocked.Add(ref aggregatedValue, localAgg)
   );

Properties

Double

1. propd.snippet - auto-property of double type

   public double MyProperty { get; set; }

2. propdfull.snippet - property of double type with private field

   private double myVar;
   
   public double MyProperty
   {
       get { return myVar; }
       set { myVar = value; }
   }

Bool

1. propb.snippet - auto-property of bool type

   public bool MyProperty { get; set; }

2. propbfull.snippet - property of bool type with private field

   private bool myVar;
   
   public bool MyProperty
   {
       get { return myVar; }
       set { myVar = value; }
   }

Nullable-type property

1. propnull.snippet - auto-property of Nullable-type (default double) type

   public double? MyProperty { get; set; }

2. propfullnull.snippet - property of Nullable-type (default double) type with private field

   private double? myVar;
   
   public double? MyProperty
   {
       get { return myVar; }
       set { myVar = value; }
   }

Tasks

1. taskrun.snippet - Task.Run construction

   Task.Run(() =>
   {
       // Your code here
   });

2. taskrunasync.snippet - Task.Run construction with async internal method

   Task.Run(async () =>
   {
       await // Your code here
   });

3. ataskrun.snippet - await Task.Run construction

   await Task.Run(() =>
   {
       // Your code here
   });