DECODE IN C#
Introduction:
Decoder transforms a series of encoded data into a character set. In this tutorial, we will brief about the decoding in C#.
Inheritance Object Decoder
Syntax for decode in C#:
The syntax for decoding the encoded bytes in C# is :
public abstract class class_name
Example:
The usage of a decoder to transform two separate byte arrays towards a character array is illustrated in the following example. The arrays are separated by a single byte of the character. This is comparable to the internal reading of a stream that a StreamReader object performs.
using System;
using System.Text;
public class decoder
{
public static void Main ()
{
byte [] bytes_1 = { 0x20, 0x23, 0xe2 };
byte [] bytes_2 = { 0x98, 0xa3 };
char [] character = new char [3];
Decoder dec = Encoding.UTF8.GetDecoder ();
int charLength = dec.GetChars ( bytes_1, 0, bytes_1.Length, character, 0);
charLength += dec.GetChars (bytes_2, 0, bytes_2.Length, character, charLength);
foreach (char c in character)
Console.Write (" U+{0:X4} ", (ushort) c);
}
}
Output:
![DECODE IN C#](https://static.tutorialandexample.com/csharp/decode-in-csharp1.png)
Explanation:
To retrieve a specific instance belonging to the decoder class implementation, utilize an Encoding implements GetDecoder function. The GetChars method does the decoding; the GetCharCount method calculates several characters that are required to decode a given set of bytes. Both of these techniques have many versions defined in the Decoder class. For accurately decoding byte sequences, that consist of blocks, a Decoder object keeps track of state information between consecutive calls to the GetChars as well as Convert methods.
Additionally, at the conclusion of data blocks, the Decoder saves trailing bytes, which it uses in the subsequent decoding operation. Consequently, because the operations of files as well as the network transmission frequently deal with fragments of data rather than a full data stream, GetDecoder as well as GetEncoder are helpful for these tasks.
Note: The application needs to ensure that the state data is drained by modifying the flush variable to true in the relevant method call after it has finished processing a stream of data. The program must execute Reset to remove the internal state associated with the Decoder object in the event of an exception or when switching streams.
- While implementing the program, your application needs to override every element when it inherits through this class.
Constructors:
Decoder () creates a new Decoder class instance and establishes it.
Properties:
- Fallback: With the current Decoder object, obtains or defines a DecoderFallback object.
- FallbackBuffer: Obtains the object DecoderFallbackBuffer connected to the active Decoder object.
Methods:
Convert(Byte*, Int32, Char*, Int32, Boolean, Int32, Int32, Boolean) | transforms a buffer containing encoded bytes into characters encrypted in UTF-16, then stores the outcome in a different buffer. |
Convert (Byte [], Int32, Int32, Char [], Int32, Int32, Boolean, Int32, Int32, Boolean) | Converts UTF-16 encrypted characters from an array of encoded bytes, which is then stored in a character array. |
Convert ( ReadOnlySpan < Byte >, Span <Char>, Boolean, Int32, Int32, Boolean) | transforms a span of encoding bytes into characters encrypted in UTF-16, then stores the outcome in a different span buffer. |
Equals (Object) | checks to see if the present object and the supplied object are equal. (Inherited from an Object) |
GetCharCount (Byte*, Int32, Boolean) | Whenever overridden within a derived class, it determines the total number of letters generated while decoding a series of bytes begins at the supplied byte address. Whenever to clear the decoder's internal state following the calculation is indicated by a parameter. |
GetCharCount (Byte[], Int32, Int32) | Determines the number of characters generated by decoding a series of bytes using the given byte array whenever overridden within a derived class. |
GetCharCount (Byte[], Int32, Int32, Boolean) | Determines the total quantity of characters generated by decoding a series of bytes using the given byte array whenever overridden in a class that was derived. Whether to clear the decoder's inner state following the calculation is indicated by a parameter. |
Extension Methods:
Convert(Decoder, ReadOnlySequence<Byte>, IBufferWriter<Char>, Boolean, Int64, Boolean) | Creates the results to the writer after converting a ReadOnlySequence to UTF-16 encrypted characters. |
Convert(Decoder, ReadOnlySpan<Byte>, IBufferWriter<Char>, Boolean, Int64, Boolean) | uses a decoder for converting a ReadOnlySpan to characters, then writes the outcome to writer. |
Applications:
Product | Versions |
.NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8 |
.NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 1.0, 1.1, 1.2, 1.3, 1.4, 1.6, 2.0, 2.1 |
UWP | 10.0 |
Conclusion:
Decode in C# is used to convert encoded data into the character set.