I am creating json files FileSystem.AppDataDirectory, "test"," {Hour}.json "; I can see the files on the device in Xcode.. once I return only one with this Path.Combine(FileSystem.AppDataDirectory, "test",".json") then I can read its content.
However once I need to return all files from the directory and list the path to them in my application
var result = Directory.EnumerateFiles(FileSystem.AppDataDirectory, "test");
The result is empty
this is the path /var/mobile/Containers/Data/Application/02A91048-0016-4E20-A8A6-EB2A89649F1F/Library
which is correct an I see the files the physical. Where am I doing mistake?
I have also tried this
var test = FileSystem.OpenAppPackageFileAsync(FileSystem.AppDataDirectory);
but I am getting unauthorized exception
you are looking for files in the test subfoloder
the signature of EnumerateFiles is
public static System.Collections.Generic.IEnumerable<string> EnumerateFiles (string path, string searchPattern);
so you want to do this
var path = Path.Combine(FileSystem.AppDataDirectory,"test");
var result = Directory.EnumerateFiles(path, "*.json");
Related
I am developing an application for Android using Xamarin.
I have created a JsonData folder in the Android project and created a Setting.json file.
\MyApp\MyApp.Android\JsonData\Setting.json
In the properties, we set the Copy when new.
The following folders in the local environment contain the files.
\MyApp\MyApp.Android\bin\Debug\JsonData\Setting.json
I want to load this file in the actual Android device.
When I do this, it tells me that the file is missing.
Could not find a part of the path "/JsonData/Setting.json."
Try
{
var text = File.ReadAllText("JsonData/Setting.json", Encoding.UTF8);
var setting = JsonConvert.DeserializeObject<Setting>(text);
}
catch(Exception exception)
{
var error = exception.Message;
}
What is the path of the file in Android?
I think you're using File Handling in Xamarin.Forms incorrectly.
From the parameter of function File.ReadAllText, the app will access the file system to getSetting.json from folder JsonData in your android device.
The path of the file on each platform can be determined from a .NET Standard library by using a value of the Environment.SpecialFolder enumeration as the first argument to the Environment.GetFolderPath method. This can then be combined with a filename with the Path.Combine method:
string fileName = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "temp.txt");
And you can read the file by code:
string text = File.ReadAllText(fileName);
In addition, from your code,I guess you want to Load your Embedded file( Setting.json) as Resources,right?
In this case,we should make sure the Build Action of your Setting.json is Embedded Resource.
And GetManifestResourceStream is used to access the embedded file using its Resource ID.
You can refer to the following code:
var assembly = IntrospectionExtensions.GetTypeInfo(typeof(LoadResourceText)).Assembly;
Stream stream = assembly.GetManifestResourceStream("YourAppName.JsonData.Setting.json");
string text = "";
using (var reader = new System.IO.StreamReader (stream))
{
text = reader.ReadToEnd ();
}
For more , you can check document : File Handling in Xamarin.Forms.
And you can also check the sample code here: https://learn.microsoft.com/en-us/samples/xamarin/xamarin-forms-samples/workingwithfiles/ .
Good day, I'm having an error where when I replace a file, it returns "500 internal server error". But when I upload a new file everything is okay.
Here is my code:
public async Task UploadContentBlobAsync(IFormFile formFile, string fileName)
{
var blobClient = _containerClient.GetBlobClient(fileName);
await blobClient.UploadAsync(formFile.OpenReadStream());
}
accoring to this source Azure will just replace my fie to be uploaded to the existing file, but that doesn't happen to my case.
I am using Azure.Storage.Blobs 12.4.3, I create a method and pass the request as a parameter. The following code works and no error will be reported during the replacement of blob content:
string connectionString = "DefaultEndpointsProtocol=https;AccountName=0730bowmanwindow;AccountKey=xxxxxx;EndpointSuffix=core.windows.net";
string containerName = "video";
string fileName = "1.png";
BlobServiceClient blobServiceClient = new BlobServiceClient(connectionString);
BlobContainerClient containerClient = blobServiceClient.GetBlobContainerClient(containerName);
BlobClient blobClient = containerClient.GetBlobClient(fileName);
await blobClient.UploadAsync(req.Body, true);
(I put the picture in the binary format and put it in the request.)
In the package I use, the Boolean value of parameter of the UploadAsync method about whether to override blob is false, so I must provide a true, otherwise it will report an error.
You can make an experiment to see if it can be executed correctly according to the package version and code provided by me. If not, please provide detail error information.:)
I tried to upload file to blob. But I'm getting error like this:
"'C:\Program Files (x86)\IIS
Express\Nominative-Officers-Entry-Form-Stu.docx'."
I don't use HttpPostedFileBase in my code. I just pass object to my controller with files to be uploaded. Lease tell me what I'm doing wrong?
I want to know wt this line means :
"blockBlob.Properties.ContentType = "
This is my code:
public static SaveResponses CreateFile(Blob_Storage_Header docDetails)
{
string storageConnectionString = ConfigurationManager.ConnectionStrings["StorageConnectionString"].ConnectionString.ToString();
CloudStorageAccount storageAccount = CloudStorageAccount.Parse(storageConnectionString);
CloudBlobClient blobClient = storageAccount.CreateCloudBlobClient();
CloudBlobContainer container = blobClient.GetContainerReference("test2");
ICollection<Blob_Storage_Details> BlobStorageDetails = docDetails.Blob_Storage_Details;
if (BlobStorageDetails.Count > 0) {
foreach (Blob_Storage_Details item in BlobStorageDetails)
{
string DocUUID = Guid.NewGuid().ToString();
CloudBlockBlob blockBlob = container.GetBlockBlobReference(DocUUID + item.Blob_Name);
var fileName = Path.GetFileName(item.Blob_Name);
//blockBlob.Properties.ContentType = item.ContentType;
// Create or overwrite the "myblob" blob with contents from a local file.
using (var fileStream = File.OpenRead(fileName))
{
blockBlob.UploadFromStream(fileStream);
}
}
}
SaveResponses saveResponse = new SaveResponses();
saveResponse.saveStatus = "true";
saveResponse.messageType = "success";
saveResponse.message = "File Create message";
return (saveResponse);
}
"'C:\Program Files (x86)\IIS Express\Nominative-Officers-Entry-Form-Stu.docx'."
Based on your code, I ran it on my side, then I got the following error:
Remark: In development environment, you could add “<customErrors mode="Off"/>” within the system.web node in your Web.config file, then you could view the detailed errors.
According to this error, I checked and found the specified file path was not existed.
After some trials, I fixed the issue on my side. Please follow the descriptions below to check your code to see whether it works:
a) Please pay attention to the code “Path.GetFileName”, it returns the file name and extension of the specified path string (e.g. settings.job).
b) Make sure that the filename that is used in “File.OpenRead(fileName)” is an absolute file path and the file is existed in your environment.
"blockBlob.Properties.ContentType = "
Azure Storage Client Library for .NET is based on Storage Service REST API,
From the official document we could find that “blockBlob.Properties.ContentType” represents the MIME content type of the blob, the default type is application/octet-stream.
MIME is a way to identity files on internet according to their nature and format. For example, using the "Content-type" header value defined in a HTTP response, the browser can open the file with the proper extension/plugin. For more details about MIME, please refer to this link: http://www.freeformatter.com/mime-types-list.html
This may seem obvious but I'm having a hard time finding the answer.
I have a List of file paths which are stored as relative file paths.
("~\Data\1f492f55-c7ad-44ae-8cbc-93885ac4383a.jpg")
These files can be jpgs,docs or PDFs.
How can I give a View functionality?
You may use the File method to render content of a file (PDF /JPG etc..)
public ActionResult Index()
{
var filePath = #"C:\\temp\tempFile.pdf";
return File(filePath, "application-pdf", "YourFriendlyFileName.pdf");
}
You may change the code the get the file paths and replace it with the hardcoded file path above.
Upload them to the application and use relative path.
As localhost:80/images/image1.jpg
Found the below solution.This support any file types.
public FileResult Download(int id)
{
var filePath = #"~\\Data\0e383d46-021d-48b4-9f03-e9a70bc894f7.jpg";
//var filePath = #"~\\Data\\file.pdf";
//var filePath = #"~\\Data\\word.docx";
string fileName = Path.GetFileName(careTakerFile.FilePath);
return File(filePath, System.Net.Mime.MediaTypeNames.Application.Octet, fileName);
}
I am getting the following error while uploading the file from my local drive.
The given path's format is not supported.
The code is given.
Please tell me what changes I have to make.
string file0 = MapPathReverse(FileUpload1.PostedFile.FileName);// Get virtual path
string conversationFileSource = Server.MapPath(file0);
StreamReader file = new StreamReader(conversationFileSource);
If you want to access the input stream of the uploaded file:
using (StreamReader reader = new StreamReader(FileUpload1.PostedFile.InputStream))
{
...
}
If you want to save the uploaded file on some folder on your server:
var uploadsFolder = Server.MapPath("~/uploads");
var file = Path.Combine(uploadsFolder, Path.GetFileName(FileUpload1.PostedFile.FileName));
FileUpload1.PostedFile.SaveAs(file);