C#

dashingsidds wrote:

So Luc you are saying there is no way i can refer the methods ...

call "$(VS80COMNTOOLS)\vsvars32.bat"
editbin.exe /NXCOMPAT:NO "$(TargetPath)"

class LoadPicture : IDisposable
{
    public delegate void FinishedDelegate(Image img);
    public delegate void ProgressDelegate(int current, int max, string c, string t);
    public event FinishedDelegate Finished;
    public event ProgressDelegate ProgressChanged;

    string Tag;
    bool stop;

    public LoadPicture(string Tag)
    {
        this.Tag = Tag;
        stop = false;
    }

    ~LoadPicture()
    {
        ProgressChanged = null;
        Finished = null;
    }

    public void Load()
    {
        SqlConnection conn = new SqlConnection(AssetConfig.ConnectionString);
        SqlCommand cmd = new SqlCommand("SELECT Picture FROM Inventory_Pictures WHERE PictureID=@Tag", conn);
        cmd.Parameters.AddWithValue("@Tag", Tag);

        try
        {
            conn.Open();

            // HERE I AM WORKING ON A BETTER WAY OF TELLING IF IDataReader DOES NOT CONTAIN DATA...
            // HAVEN'T FIGURED IT OUT YET BUT THIS IS JUST TEMP
            SqlDataReader tmp = cmd.ExecuteReader();
            if (tmp.HasRows)
            {
                tmp.Close();

                IDataReader r = cmd.ExecuteReader(CommandBehavior.SequentialAccess);
                if (r != null)
                {
                    r.Read();

                    long size = r.GetBytes(0, 0, null, 0, 0);
                    byte[] buffer = new byte[size];
                    int bufferSize = 1024;
                    int dataIndex = 0;
                    long bytesRead = 0;

                    while ((bytesRead < size) && ((size - bytesRead) > 1024))
                    {
                        if (stop)
                            break;

                        bytesRead += r.GetBytes(0, dataIndex, buffer, dataIndex, bufferSize);
                        dataIndex += 1024;

                        decimal FileSize = (Convert.ToDecimal(size) / 1024) / 1024;
                        decimal CurrentSize = (Convert.ToDecimal(bytesRead) / 1024) / 1024;

                        // YOU NOTICE HERE I CHECK FOR IT BEING NULL BEFORE CALLING IT (So why is it trying to call it
                        // after the frmViewAsset is disposed since frmViewAsset should be disposing of it before closing?
                        if (ProgressChanged != null)
                            ProgressChanged(dataIndex, Convert.ToInt32(size), Math.Round(CurrentSize, 2).ToString(), Math.Round(FileSize, 2).ToString());
                    }

                    if (!stop)
                    {
                        bytesRead += r.GetBytes(0, dataIndex, buffer, dataIndex, Convert.ToInt32((size - bytesRead)));

                        MemoryStream ms = new MemoryStream(buffer);
                        if (Finished != null)
                            Finished(Image.FromStream(ms));

                        ms.Close();
                    }
                }
                r.Close();
            }
        }
        catch (Exception ex)
        {
            Error.WriteError(ErrorType.SQL, "LoadPicture", ex.ToString());
        }
        finally
        {
            if (conn != null)
            {
                conn.Close();
                conn.Dispose();
            }

            if (cmd != null)
                cmd.Dispose();
        }
    }

    public void Stop()
    {
        stop = true;
    }

    public void Dispose()
    {
        System.GC.SuppressFinalize(true);
    }
}

LoadPicture lp;
Thread t4;
private void frmViewAsset_Load(object sender, EventArgs e)
{
    lp = new LoadPicture(AssetID);
    lp.ProgressChanged += new LoadPicture.ProgressDelegate(p_ProgressChanged);
    lp.Finished += new LoadPicture.FinishedDelegate(p_Finished);

    t4 = new Thread(new ThreadStart(PopulatePicture));
    t4.Start();
}
private void PopulatePicture()
{
    lp.Load();
}
private void p_ProgressChanged(int current, int max, string c, string t)
{
    if (!this.IsDisposed)
    {
        Invoke((Action)(() => // <-- THIS IS LINE 388
        {
            pbPicture.Maximum = max;
            pbPicture.Value = current;

            lbPicProgress.Text = string.Format("{0}MB / {1}MB", c, t);
        }));
    }
}
private void p_Finished(Image img)
{
    Invoke((Action)(() =>
    {
        picAsset.Image = img;
    }));
}
private void frmViewAsset_FormClosing(object sender, FormClosingEventArgs e)
{
    lp.Stop();
    lp.Dispose();
}

lp.ProgressChanged -= new LoadPicture.ProgressDelegate(p_ProgressChanged);
lp.Finished -= new LoadPicture.FinishedDelegate(p_Finished);