C#

using (var memoryStream = new MemoryStream())
{
    pictureDocument.Image.Save(memoryStream, System.Drawing.Imaging.ImageFormat.Png);

    byte[] employee_document = memoryStream.ToArray();

    sql_command.Parameters.AddWithValue("param_document", employee_document).MySqlDbType = MySqlDbType.LongBlob;
}

[DllImport("user32.dll")]
       public static extern int SendMessage(int hWnd,uint Msg, int wParam,int lParam);

private const uint WM_RBUTTONDOWN = 0x0204;
private const uint WM_RBUTTONUP = 0x0205;

private void button6_Click(object sender, EventArgs e)
        {
int window = FindWindow(null, "Notepad");
            SendMessage(window, WM_RBUTTONDOWN, 0, 0);
            SendMessage(window, WM_RBUTTONUP, 0, 0);
        }