private void btnLoad_Click(object sender, EventArgs e) { //Call classes needed this.pictureIO = new PictureIO(); this.edge = new Edge(); originalBitmap = pictureIO.openPicture(); previewBitmap = originalBitmap; //Size in the picture box previewBitmap = edge.CopyToSquareCanvas(previewBitmap, pictureBox1.Width); //Put the picture in the picture box pictureBox1.Image = previewBitmap; ApplyFilter(); }