SampleApp.MainForm.openFileItem_Click C# (CSharp) Method

        private void openFileItem_Click(object sender, System.EventArgs e)
        {
            try
            {
                // show file open dialog
                if (openFileDialog.ShowDialog() == DialogResult.OK)
                {
                    // load image
                    sourceImage = (Bitmap)Bitmap.FromFile(openFileDialog.FileName);

                    // check pixel format
                    if ((sourceImage.PixelFormat == PixelFormat.Format16bppGrayScale) ||
                         (Bitmap.GetPixelFormatSize(sourceImage.PixelFormat) > 32))
                    {
                        MessageBox.Show("The demo application supports only color images.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                        // free image
                        sourceImage.Dispose();
                        sourceImage = null;
                    }
                    else
                    {
                        // make sure the image has 24 bpp format
                        if (sourceImage.PixelFormat != PixelFormat.Format24bppRgb)
                        {
                            Bitmap temp = Accord.Imaging.Image.Clone(sourceImage, PixelFormat.Format24bppRgb);
                            sourceImage.Dispose();
                            sourceImage = temp;
                        }
                    }

                    ClearCurrentImage();

                    // display image
                    pictureBox.Image = sourceImage;
                    noneFiltersItem.Checked = true;

                    // enable filters menu
                    filtersItem.Enabled = (sourceImage != null);
                }
            }
            catch
            {
                MessageBox.Show("Failed loading the image", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }