Csharp/C Sharp/File Stream/Memory Stream

Create a MemoryStream

<source lang="csharp"> using System; using System.IO; class MemStreamApp {

   static void Main(string[] args)
   {
       MemoryStream m = new MemoryStream(64);
       Console.WriteLine("Length: {0}\tPosition: {1}\tCapacity: {2}",m.Length, m.Position, m.Capacity);
  
       for (int i = 0; i < 64; i++)
       {
           m.WriteByte((byte)i);
       }
       Console.WriteLine("Length: {0}\tPosition: {1}\tCapacity: {2}",m.Length, m.Position, m.Capacity);
  
       byte[] ba = m.GetBuffer();
       foreach (byte b in ba)
       {
           Console.Write("{0,-3}", b);
       }
  
       m.Close();
   }

}

</source>

MemoryStream.ToArray, MemoryStream.ReadDecimal

<source lang="csharp"> using System; using System.IO; class MainClass {

   public static byte[] DecimalToByteArray (decimal src){
       using (MemoryStream stream = new MemoryStream()) {
          using (BinaryWriter writer = new BinaryWriter(stream)){
              writer.Write(src);
              return stream.ToArray();
          }
       }
   }
   public static decimal ByteArrayToDecimal (byte[] src){
       using (MemoryStream stream = new MemoryStream(src)){
          using (BinaryReader reader = new BinaryReader(stream)){
             return reader.ReadDecimal();
          }
       }
   }
   public static void Main()
   {
       byte[] b = null;
       b = BitConverter.GetBytes(true);
       Console.WriteLine(BitConverter.ToString(b));
       Console.WriteLine(BitConverter.ToBoolean(b, 0));
       b = BitConverter.GetBytes(3678);
       Console.WriteLine(BitConverter.ToString(b));
       Console.WriteLine(BitConverter.ToInt32(b, 0));
       b = DecimalToByteArray(285998345545.563846696m);
       Console.WriteLine(BitConverter.ToString(b));
       Console.WriteLine(ByteArrayToDecimal(b));
   }
   

}

</source>

MemoryStream.Write

<source lang="csharp"> using System; using System.IO; public class MemTest {

   public static void Main() {
       MemoryStream memOut = new MemoryStream();
       byte[] bs = { 1, 2, 3, 4, 5, 6 };
       memOut.Write(bs, 0, bs.Length);
       memOut.Seek(+3, SeekOrigin.Begin);
       byte b = (byte)memOut.ReadByte();
       Console.WriteLine("Value: " + b);
   }

}

</source>

Use MemoryStream and BinaryReader to convert Byte array to decimal

<source lang="csharp"> using System; using System.IO; class Test {

   public static byte[] DecimalToByteArray (decimal src) {
       using (MemoryStream stream = new MemoryStream()) {
           using (BinaryWriter writer = new BinaryWriter(stream)){
               writer.Write(src);
               return stream.ToArray();
           }
       }
   }
   public static decimal ByteArrayToDecimal (byte[] src) {
       using (MemoryStream stream = new MemoryStream(src)) {
           using (BinaryReader reader = new BinaryReader(stream)) {
               return reader.ReadDecimal();
           }
       }
   }
   public static void Main() {
       byte[] b = BitConverter.GetBytes(true);
       // Convert a decimal to a byte array and display.
       b = DecimalToByteArray(12345678987654321.563846696m);
       Console.WriteLine(BitConverter.ToString(b));
       // Convert a byte array to a decimal and display.
       Console.WriteLine(ByteArrayToDecimal(b));
   }

}

      </source>

Use MemoryStream and BinaryWriter to convert decimal to byte array

<source lang="csharp"> using System; using System.IO; class Test {

   // Create a byte array from a decimal.
   public static byte[] DecimalToByteArray (decimal src) {
       using (MemoryStream stream = new MemoryStream()) {
           using (BinaryWriter writer = new BinaryWriter(stream)){
               writer.Write(src);
               return stream.ToArray();
           }
       }
   }
   public static void Main() {
       byte[] b = DecimalToByteArray(285998345545.563846696m);
       // Convert a decimal to a byte array and display.
       Console.WriteLine(BitConverter.ToString(b));
   }

}

      </source>