C-Sharp

Formatting numbers in strings C# with Example



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Formatting numbers in strings C# with Example

You can use a colon and the standard numeric format syntax to control how numbers are formatted. 
var decimalValue = 120.5; 
var asCurrency = $"It costs {decimalValue:C}"; 
// String value is "It costs $120.50" (depending on your local currency settings) 
var withThreeDecimalPlaces = $"Exactly {decimalValue:F3}"; 
// String value is "Exactly 120.500" 
var integerValue = 57; 
 

var prefixedIfNecessary = $"{integerValue:D5}"; 
// String value is "00057" 
Live Demo on .NET Fiddle

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