Write

Overrides Stream

This instance method writes the supplied buffer into the OracleBlob.

Declaration

// C#
public override void Write(byte[ ] buffer, int offset, int count);

Parameters

• buffer

  The byte array buffer that provides the data.

• offset

  The 0-based offset (in bytes) from which the buffer is read.

• count

  The amount of data (in bytes) that is to be written into the OracleBlob.

Exceptions

ObjectDisposedException - The object is already disposed.

InvalidOperationException - The OracleConnection is not open or has been closed during the lifetime of the object.

ArgumentOutOfRangeException - This exception is thrown if any of the following conditions exist:

• The offset or the count is less than 0.

• The offset is greater than or equal to the buffer.Length.

• The offset and the count together are greater than buffer.Length.

Remarks

Destination offset in the OracleBlob can be specified by the Position property.

Example

// C#
 
using System;
using Oracle.DataAccess.Client;
using Oracle.DataAccess.Types;
 
class WriteSample
{
  static void Main()
  {
    string constr = "User Id=scott;Password=tiger;Data Source=oracle";
    OracleConnection con = new OracleConnection(constr);
    con.Open();
 
    OracleBlob blob = new OracleBlob(con);
    
    // Set the Position for the Write
    blob.Position = 0;  
 
    // Begin ChunkWrite to improve performance
    // Index updates occur only once after EndChunkWrite
    blob.BeginChunkWrite();
          
    // Write to the OracleBlob in 5 chunks of 2 bytes each
    byte[] b = new byte[2] {1, 2};
    for(int index = 0; index < 5; index++)
    {
      blob.Write(b, 0, b.Length);
    }
    blob.EndChunkWrite();
 
    byte[] chunkBuffer = blob.Value;
 
    // Prints "chunkBuffer = 1212121212"
    Console.Write("chunkBuffer = ");
    for(int index = 0; index < chunkBuffer.Length; index++)
    {
      Console.Write(chunkBuffer[index]);
    }
    Console.WriteLine();
 
    blob.Close();
    blob.Dispose();
 
    con.Close();
    con.Dispose();
  }
}