Table of contents
2. Use string difference (C#6.0):
1. Use Write
Console.Write("Hello, World!");Output result:
2. Use WriteLine
Console.WriteLine("Hello, World!");
Console.WriteLine("Hello, World!");
Console.WriteLine("Hello, World!");Output result:
3. Format string
1. Use Alternative Markup
The following statement has two substitution tokens: 0 and 1; and two substitution values: 3 and 6:
Console.WriteLine("they are {0} and {1}.", 3, 6);
2. Use string interpolation (C#6.0):
Note: Need to add mark "$" in front.
int num1 = 10;
string s1 = "hello";
Console.WriteLine($"They are {num1} and {s1}.");Output result:
4. Multiple tags and values
In C#, any number of substitution flags and any number of values can be used:
Console.WriteLine("There are {1}, {0} and {1}.", 3, 6);Output result:
Note that the token cannot exceed a value at a position other than the length of the replaced value list, otherwise a runtime error will be generated:
Console.WriteLine("There are {2}, {0} and {1}.", 3, 6);Output result:
5. Formatting numeric strings
for example:
int temp = 100;
Console.WriteLine("{0}",500); //50
Console.WriteLine("{0,10}", 500); // 500
Console.WriteLine("{0,10:C}", 500); // ¥500.00 (右对齐)
Console.WriteLine("{0,-10:C}", 500); //¥500.00 (左对齐)
Console.WriteLine("{0,10:C5}", 500); //¥500.00000
Console.WriteLine($"{temp,10:C5}"); //¥100.00000The meaning of the third sentence Console: output item 0 (500) in the list , and format it as currency (¥500.00), and make the output result right-aligned in 10 fields (there are 3 spaces in front of ¥500.00).
The meaning of the fifth sentence Console: output the 0th item (500) in the list , and format it as currency (¥500.00), keep 5 decimal places (¥500.00000), and make the output result right-aligned in 10 fields ( There is no space before ¥500.00000, because 10 fields have been filled).
There are many formatting characters besides "C". The following table lists some commonly used formatting characters:
