.NET C# byte[] to String sample

Sample array & string

byte[] array = new byte[] { 0x48, 0x65, 0x6C, 0x6C, 0x6F, 
                            0x57, 0x6F, 0x72, 0x6C, 0x64 }; //"HelloWorld"

byte[] to String

string str = System.Text.Encoding.Default.GetString(array);
string str = System.Text.Encoding.ASCII.GetString(array);           

byte[] to String

System.Text.ASCIIEncoding converter = new System.Text.ASCIIEncoding();
string str = converter.GetString(array);

HexString to byte[]

string str = ByteArrayToHex(array);
public static string ByteArrayToHex(byte[] array)
{
    System.Text.StringBuilder sb = new System.Text.StringBuilder();
    foreach (byte element in array)
        sb.Append(element.ToString("X2"));
    return sb.ToString();
}