System.Convert.Convert.ToBase64String C# (CSharp) Метод

		public static string ToBase64String (byte[] inArray, int offset, int length, Base64FormattingOptions options)
		{
			if (inArray == null)
				throw new ArgumentNullException ("inArray");
			if (offset < 0 || length < 0)
				throw new ArgumentOutOfRangeException ("offset < 0 || length < 0");
			// avoid integer overflow
			if (offset > inArray.Length - length)
				throw new ArgumentOutOfRangeException ("offset + length > array.Length");

			if (length == 0)
				return String.Empty;

			if (options == Base64FormattingOptions.InsertLineBreaks)
				return ToBase64StringBuilderWithLine (inArray, offset, length).ToString ();
			else
				return Encoding.ASCII.GetString (ToBase64Transform.InternalTransformFinalBlock (inArray, offset, length));
		}