Detailed explanation of string splicing in C# @ $

one:@

@ means to use characters marked by @, where all symbols are string symbols, and there are no special characters, such as '', etc., all default to strings.

    static void Main(string[] args)
    {
    //This makes it very convenient to write the read file path, and there is no need for escape characters     StreamReader sr = new StreamReader(@"C:\Users\WANGWI8\Desktop\");
     string line;
     while( (line = ()) != null )
     {
       (line);
     }
     }

Two: $

$ means that in the string marked with it, the value can be taken by brackets:

static void Main(string[] args)
    {
      var name = ();
      var date = ;
      var result = $"hello {name} , you are my father , i am your son , writed at {date}";
      (result);
      var item2 =
      (
        name: "william",
        sex: 'f'
      );
      ($"this is item :  : {} , this is sex : {}");
      var inventory = new Dictionary&lt;string, int&gt;()
      {
        ["hammer, ball pein"] = 18,
        ["hammer, cross pein"] = 5,
        ["screwdriver, Phillips #2"] = 14
      };
      ($"inventory on {:d}");
      (" ");
      //The negative sign means left alignment, occupying a total of 25 characters of space      ($"|{"item",-25}|{"quantity",10}|");
      foreach (var item in inventory)
        ($"|{,-25}|{,10}|");
    }

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