Out of Memory in pictures

[PT Exorcist]

well..i am doin a button that will download a picture off the internet and in the end will show the downloaded picture in himself...but i am getting a g@y "out of memory"... grrr the code is the following:

this is where the error is:

        private void downloadProgress(downloadManager e)
        {
            if (this._currentProgress == 100)
            {
                string fn = "C:\\pic.jpg";
                _parent.Image = Image.FromFile(fn);
            }
            else
            {
                this._currentProgress = (int)e.currentProgress;
            }
        } 

the code that draws the picture is this:

        private void OnPaint(object sender, System.Windows.Forms.PaintEventArgs e)
        {
            Button button = ((Button)sender);

            if (this.devImplementation.isProgressBarVisible == true)
            {
                if (!(this.devImplementation.currentProgress >= 0 && this.devImplementation.currentProgress <= 100))
                {
                    throw (new System.ArithmeticException("The value must be between 0 and 100"));
                }

                double progress = ((double)this.devImplementation.currentProgress / (double)100) * (double)button.Width;
                    
                e.Graphics.FillRectangle(
                    new System.Drawing.SolidBrush(this.devImplementation.mainColor),
                    new Rectangle(
                    new Point(0, button.Height / 2 - 10),
                    new Size((int)progress , 20)
                    ));
            }
        }