private ImageEntry SaveBitmap(Bitmap bmp, Screen screen)
{
ImageEntry result = null;
ImageCodecInfo ici = GetEncoderInfo("image/jpeg");
using (EncoderParameters p = GetEncoderParameters())
{
//string path = dataFolder + "\\" + DateTime.Now.Ticks.ToString() + ".jpg";
using (System.IO.MemoryStream stream = new System.IO.MemoryStream())
{
bmp.Save(stream, ici, p);
//bmp.Save(path, ici, p);
string base64data = Convert.ToBase64String(stream.ToArray());
using (SQLiteCommand cmd = conn.CreateCommand())
{
cmd.CommandText = "INSERT INTO images (name, data) VALUES(@0,@1)";
string name = DateTime.Now.ToString() + " - " + screen.DeviceName;
SQLiteParameter pname = new SQLiteParameter("@0", name);
SQLiteParameter pdata = new SQLiteParameter("@1", base64data);
cmd.Parameters.Add(pname);
cmd.Parameters.Add(pdata);
cmd.ExecuteNonQuery();
result = new ImageEntry()
{
ID = conn.LastInsertRowId,
Name = name
};
}
}
}
return(result);
}
private void LoadData()
{
using (SQLiteCommand cmd = conn.CreateCommand())
{
cmd.CommandText = "SELECT id, name FROM images ORDER BY id DESC";
using (SQLiteDataReader reader = cmd.ExecuteReader())
{
while (reader.Read())
{
ImageEntry entry = new ImageEntry
{
ID = reader.GetInt32(0),
Name = reader.GetString(1)
};
lstItems.Items.Add(entry);
}
txtNum.Text = lstItems.Items.Count.ToString();
}
}
}
private void UpdateNewEntry(ImageEntry entry)
{
lstItems.Items.Insert(0, entry);
if (lstItems.Items.Count > max)
{
int removenum = lstItems.Items.Count - max;
for (int i = 0; i < removenum; i++)
{
ImageEntry rentry = lstItems.Items[lstItems.Items.Count - 1] as ImageEntry;
lstItems.Items.RemoveAt(lstItems.Items.Count - 1);
using (SQLiteCommand cmd = conn.CreateCommand())
{
cmd.CommandText = "DELETE FROM images WHERE id = @0";
SQLiteParameter pid = new SQLiteParameter("@0", rentry.ID);
cmd.Parameters.Add(pid);
cmd.ExecuteNonQuery();
}
}
}
txtNum.Text = lstItems.Items.Count.ToString();
}
private void TakeScreenShot(object sender, System.Timers.ElapsedEventArgs e)
{
foreach (Screen screen in Screen.AllScreens)
{
using (Bitmap bmp = new Bitmap(screen.Bounds.Width, screen.Bounds.Height))
{
using (Graphics g = Graphics.FromImage(bmp))
{
try
{
g.CopyFromScreen(screen.Bounds.X, screen.Bounds.Y, 0, 0, screen.Bounds.Size);
ImageEntry entry = SaveBitmap(bmp, screen);
if (entry != null)
{
this.Invoke((MethodInvoker)(() => UpdateNewEntry(entry)));
}
}
catch
{ }
}
}
}
timer.Interval = (random.Next(period) + 1) * 1000;
}
