C#中的字符串拼接@,$
转载自:https://blog.csdn.net/qq_40666620/article/details/101695138
一:@
@的意思是以@标注的字符出,其中所有的符号均为字符串符号,没有什么特殊字符,如’'什么的,均默认为字符串
static void Main(string[] args) { //这样就很方便写读取的文件路径,也不需要什么转义字符了 StreamReader sr = new StreamReader(@"C:\Users\WANGWI8\Desktop\testStreamRead.txt"); string line; while( (line = sr.ReadLine()) != null ) { Console.WriteLine(line); } }
二:$
$的意思是以它标注的字符串中,可用中括号取值:
static void Main(string[] args) { var name = Console.ReadLine(); var date = DateTime.Now; var result = $"hello {name} , you are my father , i am your son , writed at {date}"; Console.WriteLine(result); var item2 = ( name: "william", sex: 'f' ); Console.WriteLine($"this is item : item.name : {item2.name} , this is sex : {item2.sex}"); var inventory = new Dictionary<string, int>() { ["hammer, ball pein"] = 18, ["hammer, cross pein"] = 5, ["screwdriver, Phillips #2"] = 14 }; Console.WriteLine($"inventory on {DateTime.Now:d}"); Console.WriteLine(" "); //负号的意思是左对齐,一共占据25个字符的空间 Console.WriteLine($"|{"item",-25}|{"quantity",10}|"); foreach (var item in inventory) Console.WriteLine($"|{item.Key,-25}|{item.Value,10}|"); }