How to Round Numbers to Two Decimal Places in C# Using Math.Round?

Rounding Numbers to Two Decimal Places in C# Using Math.Round

Rounding numbers to specified decimal places is a common task in programming. In C#, the Math.Round function provides a convenient way to do this.

The Math.Round function takes two parameters: the number to be rounded and the number of decimal places. To round a number to two decimal places using the Math.Round function, simply specify 2 as the second parameter.

For example:

decimal a = 1.994444M;

Math.Round(a, 2); //returns 1.99

In this example, the number a is rounded to two decimal places, resulting in the value 1.99.

Another example:

decimal b = 1.995555M;

Math.Round(b, 2); //returns 2.00

In this case, the number b is rounded to two decimal places, resulting in the value 2.00.

Bankers Rounding

The Math.Round function also supports bankers rounding, also known as round-to-even. This type of rounding ensures that the result is rounded to the nearest even number if the fractional part is exactly half.

To use bankers rounding, specify the MidpointRounding.ToEven value as the third parameter to the Math.Round function.

For example:

Math.Round(a, 2, MidpointRounding.ToEven);

Additional Resources

For more information on the Math.Round function and bankers rounding, please refer to the following resources:

• [Math.Round Method (System)](https://docs.microsoft.com/en-us/dotnet/api/system.math.round?view=netcore-3.1)
• [MidpointRounding Enum (System)](https://docs.microsoft.com/en-us/dotnet/api/system.midpointrounding?view=netcore-3.1)

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