用C#将图片保存至Oracle BLOB字段中的方法

CREATE TABLE GAMBAR
(
 GAMBAR_BIN BLOB
);

using System.Windows;
using System.Data.OracleClient;
using System.Data;
using System;
 
namespace WpfSavePhotoToOracle
{
  /// <summary>
  /// Interaction logic for Window1.xaml
  /// </summary>
  public partial class Window1 : Window
  {
    OracleConnection conn;
    OracleCommand cmd;
 
    public Window1()
    {
      InitializeComponent();
    }
 
    private void btnSaveToOracle_Click(object sender, RoutedEventArgs e)
    {
      try
      {
        conn = new OracleConnection(
          "Data Source=localhost;" +
          "Persist Security Info=True;" +
          "User ID=C07;Password=C07;Unicode=True");
        conn.Open();
 
        cmd = new OracleCommand(
          "INSERT INTO GAMBAR VALUES(:blobtodb)",
          conn);
        cmd.CommandType = CommandType.Text;
 
        OracleParameter param = cmd.Parameters.Add("blobtodb",
          OracleType.Blob);
        param.Direction = ParameterDirection.Input;
        param.Value = imgViewer.ImageBinaryData;
 
        cmd.ExecuteNonQuery();
 
        conn.Close();
        MessageBox.Show("Image saved");
      }
      catch (Exception ex)
      {
        MessageBox.Show("failed to save (" + ex.Message + ")");
      }
    }
  }
}