# How to convert HexaDecimal Number to Decimal , Octal and Binary Number using C# ?

This is my fouth and last post of the series of the Number Converter for Windows Phone 7 sourcecode . In my previous posts i talked about

## How to convert HexaDecimal Number to Decimal , Octal and Binary Number using C# ?

In this blog post , i describe or share the code  that converts a HexaDecimal Number to Decimal , Octal and Binary Number using C# in Windows Phone 7 .

```public static class HexaConverter
{
/// <summary>
/// Hex2binaries the specified hexvalue.
/// </summary>
/// <param name="hexvalue">The hexvalue.</param>
/// <returns></returns>
public static string hex2binary(string hexvalue)
{
string binaryval = "";
binaryval = Convert.ToString(Convert.ToInt32(hexvalue, 16), 2);
return binaryval;
}

/// <summary>
/// Hex2s the decimal.
/// </summary>
/// <param name="hexvalue">The hexvalue.</param>
/// <returns></returns>
public static string hex2Decimal(string hexvalue)
{
string binaryval = "";
binaryval = Convert.ToString(Convert.ToInt32(hexvalue, 16), 10);
return binaryval;
}
/// <summary>
/// Hex2s the octal.
/// </summary>
/// <param name="hexvalue">The hexvalue.</param>
/// <returns></returns>
public static string hex2Octal(string hexvalue)
{
string binaryval = "";
binaryval = Convert.ToString(Convert.ToInt32(hexvalue, 16), 8);
return binaryval;
}
}```

Again , the Convert.ToString method and Convert.ToInt method was used to achieve this function .

Simple Isn’t it ?