How to Format a Float to Two Decimal Places in C#?

How to Format a Float to 2 Decimal Places

When working with floating-point numbers in programming, it's often necessary to format them with a specific number of decimal places for presentation. For example, in a sales module, you may want to display sale prices with 2 decimal places.

To format a float to 2 decimal places, the ToString method can be used with a format string. The format string specifies the desired format of the output.

For example, the following code formats a float variable to 2 decimal places:

float sale = float.Parse(((x.Sale_Price - (x.Sale_Price * (x.Discount_Price / 100))).ToString()));
sale.ToString("0.00"); // 2 decimal places

The "0.00" format string specifies that the output should have 2 decimal places. Other commonly used format strings include:

• "n2": 2 decimal places with a comma separator for thousands
• "c2": 2 decimal places with a currency symbol

Here are some examples of how these format strings would apply to a float value of 123.456:

Format String	Output
"0.00"	123.46
"n2"	123,46
"c2"	3.46

When data binding the results to a listview, the formatted string can be used to display the sale price.

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