Decimal to fraction convertion c#

I think there is nothing to explain below code. I used this code snippet to calculate the fractional value of a decimal number. Might help someone.

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1. /// <summary>  
2. ///  return fraction from decimal value  
3. /// </summary>  
4. /// <param name="decimalvalue">  
5. /// <returns>string</returns>  
6. ///   
7. /* 
8.  * logic: 
9.  * x=5.333 
10.  * 10x=53.33 
11.  * 10x-x=Math.Round(53.33-5.333) 
12.  * 9x=48 
13.  * x=48/9 
14.  * find common factor 
15.  * divide both side by commen factor [ nuerator and denominator] 
16.  * return faction 
17.  * */  
18. string DecimalToFraction(decimal decimalvalue)  
19. {  
20.     decimal decimalTemp = decimalvalue;  
21.     string returnDecimalvalue = string.Empty;  
22.     decimal temp = decimalTemp * 10;  
23.     decimal numerator = System.Decimal.Round(temp - decimalTemp);  
24.     decimal denominator = 10 - 1;  
25.   
26.     int comFact = getCommonFactor((int)numerator, (int)denominator);  
27.     returnDecimalvalue = (numerator / comFact).ToString() + "/" + (denominator / comFact).ToString();  
28.     return returnDecimalvalue;  
29. }  

        /// 

        ///  return fraction from decimal value
        /// 
        /// 
        /// string
        /// 
        /*
         * logic:
         * x=5.333
         * 10x=53.33
         * 10x-x=Math.Round(53.33-5.333)
         * 9x=48
         * x=48/9
         * find common factor
         * divide both side by commen factor [ nuerator and denominator]
         * return faction
         * */
 public string DecimalToFraction(decimal decimalvalue)
        {
            decimal decimalTemp = decimalvalue;
            string returnDecimalvalue = string.Empty;
            decimal temp = decimalTemp * 10;
            decimal numerator = System.Decimal.Round(temp - decimalTemp);
            decimal denominator = 10 - 1;

            int comFact = getCommonFactor((int)numerator, (int)denominator);
            returnDecimalvalue = (numerator / comFact).ToString() + "/" + (denominator / comFact).ToString();
            return returnDecimalvalue;
        }


 

function to find the common factor

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1. private int getCommonFactor(int a, int b)  
2.         {  
3.             int count;  
4.             while (b != 0)  
5.             {  
6.                 count = a % b;  
7.                 a = b;  
8.                 b = count;  
9.             }  
10.             return a;  
11.         }  

private int getCommonFactor(int a, int b)
        {
            int count;
            while (b != 0)
            {
                count = a % b;
                a = b;
                b = count;
            }
            return a;
        }

Thanks.