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C# Round-trip ("R") Format Specifier
This round-trip ("R") format specifier is supported for the Single, Double, and BigInteger types.
It ensures that a numeric value converted to a string is parsed back into the same numeric value.
Let us see an example −
Firstly, we have a double variable.
double doubleVal = 0.91234582637;
Now, use the ToString() method: and set the Round-trip format specifier.
doubleVal.ToString("R", CultureInfo.InvariantCulture);Let us see the complete example −
Example
using System;
using System.Numerics;
using System.Globalization;
class Demo {
static void Main() {
double doubleVal = 0.91234582637;
string str = doubleVal.ToString("R", CultureInfo.InvariantCulture);
double resRound = double.Parse(str, CultureInfo.InvariantCulture);
// round-trip Double with 'R'
Console.WriteLine(doubleVal.Equals(resRound));
}
}Output
True
Updated on: 22-Jun-2020
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