/// <summary>
/// Determines whether the specified <paramref name="value"/> is hexadecimal.
/// </summary>
/// <param name="value">The string to verify is hexadecimal.</param>
/// <returns><c>true</c> if the specified <paramref name="value"/> is hexadecimal; otherwise, <c>false</c>.</returns>
public static bool IsHex(string value)
{
if (string.IsNullOrEmpty(value))
{
return(false);
}
if (!NumberUtility.IsEven(value.Length))
{
return(false);
}
using (StringReader reader = new StringReader(value))
{
int even = value.Length / 2;
for (int i = 0; i < even; ++i)
{
char char1 = (char)reader.Read();
char char2 = (char)reader.Read();
if (!IsHexDigit(char1) || !IsHexDigit(char2))
{
return(false);
}
}
}
return(true);
}
/// <summary>
/// Determines whether the specified <paramref name="value"/> is an even number.
/// </summary>
/// <param name="value">The value to evaluate.</param>
/// <returns><c>true</c> if the specified <paramref name="value"/> is an even number; otherwise, <c>false</c>.</returns>
public static bool IsEven(this int value)
{
return(NumberUtility.IsEven(value));
}