如何将文件在线上传到文件夹而不会出现“对路径的访问被拒绝”

Question

I am trying to upload an image file to my web application online. This is how am uploading images file online.

if (!FileUploadPropertyImage.HasFile)
{
    Skin.AddModuleMessage(this, Localization.GetString("NoFileFound.ErrorMessage", LocalResourceFile), ModuleMessage.ModuleMessageType.RedError);
    return;
}

string PictureFileTypeAccepted = "jpg,png,gif";

if (FileUploadPropertyImage.PostedFile.ContentLength <= maxFileSize * 1024)
{
    string fileName = FileUploadPropertyImage.FileName.ToLower();
    string extension = Path.GetExtension(fileName);
    if (PictureFileTypeAccepted.Contains(extension.ToLower()))
    {
        System.Drawing.Bitmap objBmp = new System.Drawing.Bitmap(FileUploadPropertyImage.PostedFile.InputStream, false);

        int imageWidth = objBmp.Width;
        int imageHeight = objBmp.Height;
        int minWidth = 1100;
        int minHeight = 400;

        if (imageWidth <= 2000 && imageHeight <= 800 && (imageWidth > minWidth && imageHeight > minHeight))
        {
            var mapPath = Server.MapPath($"\\Portals\\0\\Images\\WebGeneralPropertiesFolder\\");

            var fileSavePath = new DirectoryInfo(mapPath).FullName;

            hiddenFieldPropertyImageUrl.Value = fileSavePath + "//" + FileUploadPropertyImage.FileName;
            FileUploadPropertyImage.PostedFile.SaveAs(hiddenFieldPropertyImageUrl.Value);

           hiddenFieldPropertImageName.Value =  FileUploadPropertyImage.FileName;

        }
        else
        {
            var wrongFileDimension = Localization.GetString("WrongFileDimension", LocalResourceFile);
            wrongFileDimension = wrongFileDimension.Replace("#Height#", pictureHeight.ToString());
            wrongFileDimension = wrongFileDimension.Replace("#Width#", pictureWidth.ToString());

            Skin.AddModuleMessage(this, wrongFileDimension, ModuleMessage.ModuleMessageType.RedError);
        }
    }
    else
    {
        Skin.AddModuleMessage(this, Localization.GetString("InvalidFileExtension.ErrorMessage", LocalResourceFile), ModuleMessage.ModuleMessageType.RedError);
    }
}
else
{
    Skin.AddModuleMessage(this, Localization.GetString("FileTooBig.ErrorMessage", LocalResourceFile),
        ModuleMessage.ModuleMessageType.RedError);
}

but instead am getting these error messages.

(Error: Property is currently unavailable. DotNetNuke.Services.Exceptions.ModuleLoadException: Access to the path 'C:\\inetpub\\wwwroot\\Portals\\0\\Images\\WebGeneralPropertiesFolder\\kansas-Image2.jpg' is denied. ---> System.UnauthorizedAccessException: Access to the path 'C:\\inetpub\\wwwroot\\Portals\\0\\Images\\WebGeneralPropertiesFolder\\kansas-Image2.jpg' is denied. at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost) at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options, String msgPath, Boolean bFromProxy) at System.IO.FileStream..ctor(String path, FileMode mode) at System.Web.HttpPostedFile.SaveAs(String filename) at GeoscomTech.V enueHub.Property.View.UploadPropertyImage() in C:\\MyProjects\\www.venuehub.local.ng\\DesktopModules\\Property\\View.ascx.cs:line 1717 --- End of inner exception stack trace ---)

I am building my application with Dnn Content Management, ASP.Net and C# language. I am hosting the application on Amazon Web Services. Using MSSQL and IIS, in IIS I have given full permission to iis Apppool\\DefaultApppool, Network Service, Administrator. Still unable to upload file online.

This is my first time hosting on AWS. Although i have hosted this kind of application on other hosting providers and it was working fine.

The funny thing is that it is working perfectly well on my local server. I would appreciate your feed back, thank you.

Answer 1

Are you sure that the directory in which you are uploading the image exists ? "C:\\inetpub\\wwwroot\\Portals\\0\\Images\\WebGeneralPropertiesFolder"

Best to ensure this before using SaveAs method

if (!Directory.Exists(fileSavePath ))
    Directory.CreateDirectory(fileSavePath);