C string format (decimal point retention / decimal conversion, etc.)

stay C# Development process , It is often necessary to format and display numbers . Summarizes several common formats and implementation methods .

Format specification

1. Common format character

C currency
F Keep decimal places
G routine
N The number
E Scientific type
D Decimal system
X Hexadecimal

2.Convert.ToString(int val,int toBase) Hexadecimal conversion

You can convert numbers into string formats with different hexadecimal values
Be careful ：toBase In parameter format , Can only be 2、8、10、16

Usage examples

static void Main(string[] args)
{
    // Common format specifiers   
    Console.WriteLine(" currency ：" +6.6.ToString("C"));            // currency 
    Console.WriteLine(" decimal ：" +6.6.ToString("F2"));           // Fixed decimal point 
    Console.WriteLine(" routine ：" +6.6.ToString("G"));            // routine 
    Console.WriteLine(" The number ：" +6.6.ToString("N"));            // The number 
    Console.WriteLine(" science ：" + 66.ToString("E"));            // Scientific type 

    // Common format specifier base conversion 
    Console.WriteLine("10 Base number ：" + 666.ToString("D"));         // Decimal system 
    Console.WriteLine("16 Base number ：" + 66666.ToString("X"));       // Hexadecimal 

    //Convert.ToString(int val,int toBase) Hexadecimal conversion 
    Console.WriteLine(" Binary system ：" + Convert.ToString(66, 2));   // Binary system 
    Console.WriteLine(" octal ：" + Convert.ToString(66, 8));   // octal 
    Console.WriteLine(" Decimal system ：" + Convert.ToString(66, 10));  // Decimal system 
    Console.WriteLine(" Hexadecimal ：" + Convert.ToString(66, 16));// Hexadecimal 
    
    Console.ReadLine();
}

Output

（ It's not easy for new people to create , Reprint please indicate the source ）