Use ToString() to format doubles : double Format « Data Type « C# / CSharp Tutorial






using System; 
 
class MainClass { 
  public static void Main() { 
    double v = 17688.65849; 
    double v2 = 0.15; 
    int x = 21; 
  
    string str = v.ToString("F2"); 
    Console.WriteLine(str); 
 
    str = v.ToString("N5"); 
    Console.WriteLine(str); 
 
    str = v.ToString("e"); 
    Console.WriteLine(str); 
 
    str = v.ToString("r"); 
    Console.WriteLine(str); 
 
    str = v2.ToString("p"); 
    Console.WriteLine(str); 
 
    str = x.ToString("X"); 
    Console.WriteLine(str); 
 
    str = x.ToString("D12"); 
    Console.WriteLine(str); 
 
  } 
}
17688.66
17,688.65849
1.768866e+004
17688.65849
15.00 %
15
000000000021








2.28.double Format
2.28.1.Format double value
2.28.2.Display with 2 decimal places
2.28.3.Display with commas and 2 decimal places
2.28.4.Display using scientific notation
2.28.5.Scale the value by 1000
2.28.6.Display positive, negative, and zero values differently
2.28.7.Display a percentage
2.28.8.Double format specifiers:{0:F2}, {0:N5}, {0:e}, {0:r}, {0:p}, {0:X}, {0:D12}, {0:C}
2.28.9.Use ToString() to format doubles