下列代码在技术上是否正确适用于“图片上传"?

问题描述

using System.Drawing;
using System.Web.UI.WebControls;


if (ImageUploader.HasFile)
            {
                string imagePath = ConfigurationManager.AppSettings["PhotoGalleryImage"].ToString();

                System.Drawing.Image img = System.Drawing.Image.FromStream(ImageUploader.PostedFile.InputStream);
                string imageName = ImageUploader.FileName;

                Array arrayImage = imageName.Split('.');
                imageName = System.DateTime.Now.Ticks.ToString() + "." + arrayImage.GetValue(1).ToString();
                string a = imageName;
                Array extension = a.Split('.');


                if (Convert.ToString(extension.GetValue(1)) == "jpg" || Convert.ToString(extension.GetValue(1)) == "gif" || Convert.ToString(extension.GetValue(1)) == "BMP" || Convert.ToString(extension.GetValue(1)) == "bmp" || Convert.ToString(extension.GetValue(1)) == "GIF" || Convert.ToString(extension.GetValue(1)) == "JPG" || Convert.ToString(extension.GetValue(1)).ToUpper() == "PNG")
                {
                    int variableHGeight = (img.Height / img.Width) * 345;
                    ImageUploader.PostedFile.SaveAs(Server.MapPath(imagePath) + imageName);
                   


                    System.Drawing.Image PostedImg = System.Drawing.Image.FromStream(ImageUploader.PostedFile.InputStream);

}
}

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