How to convert a string to a decimal in C#

Overview

Converting a string to a decimal value or decimal equivalent can be done using the Decimal.TryParse() method.

It converts the string representation of a number to its decimal equivalent. When a value is returned by this method, the conversion was successful.

Syntax

// use System
using System;
// create class
class StringToDecimal
{
    // main method
    static void Main()
    {
        // create string values
        string s1 = "34.43";
        string s2 = "hello";
        string s3 = "10.34";
        // create decimal value that will
        // store results of conversions
        decimal n1;
        // if successful conversion
        if(Decimal.TryParse(s1, out n1)){
          // print string, result and instance type
          Console.WriteLine(
          "Value = {0}, result = {1}, type : {2}", 
          s1, n1, s1.GetType());
        }else{
          Console.WriteLine("Conversion of {0} failed", s1);
        }
        // if successful
        if(Decimal.TryParse(s2, out n1)){
          // print string, result and instance type
          Console.WriteLine(
          "Value = {0}, result = {1}, type : {2}", 
          s2, n1, s2.GetType());
        }else{ 
          // else
          Console.WriteLine("Conversion of {0} failed", s2);
        }
        // if successful
        if(Decimal.TryParse(s3, out n1)){
          // print string, result and instance type
          Console.WriteLine(
          "Value = {0}, result = {1}, type : {2}", 
          s3, n1, s3.GetType());
        }else{
          // else
          Console.WriteLine("Conversion of {0} failed", s3);
        }
    }
}

Explanation

Lines 10–12: We create some string variables.
Line 16: We create a decimal variable that is not yet initialized with a value. It will store the value converted by the Decimal.TryParse() method.
Line 19–49: We check if the conversion of string s1, s2, and s3 was successful using if and else statements. If it is successful, then we print the value of the string, the result, and instance type. Otherwise, we say that the conversion failed.

Note: When the code is run, s2 fails to convert because it does not contain a numerical value.

How to convert a string to a decimal in C#

Overview

Syntax

Parameters

Return value

Example

Explanation