hi guys i able to get the data from my database API. but how do i get the folder files directory example /upload/activity/ ??
public class APIActivityController : ApiController
{
// var files = db.activities.GetFiles().ToList();
private istellarEntities db = new istellarEntities();
public IList<activity2> GetAllCategories()
{
IList<activity> lstAct = db.activities.ToList();
List<activity2> lstReturnList = new List<activity2>();
foreach (activity a in lstAct)
{
Models.activity2 act = new activity2();
act.ActivityID = a.ActivityID;
act.ActivityName = a.ActivityName;
act.Description = a.Description;
act.ImageURL = a.ImageURL;
lstReturnList.Add(act);
}
return lstReturnList;
}
// var files = db.activities.GetFiles().ToList();
static void DirSearch(string sDir)
here is my code, but i am missing something to get the list of directories any help guys? i know i shouldn't use void, maybe a list instead??
try
{
foreach (string d in Directory.GetDirectories(sDir))
{
foreach (string f in Directory.GetFiles(d))
{
Console.WriteLine(f);
}
DirSearch(d);
}
}
catch (System.Exception excpt)
{
Console.WriteLine(excpt.Message);
}
To get the physical folder path of a virtual path from your code like /upload/activity you can use the following code
string pathToFiles = Server.MapPath("/upload/activity");
Related
I have the below working on local host. However when I publish to azure the connection to my network doesn't work? I guess, this is obvious - my web app doesn't have connection to my local network. My question is, is there a way to allow a connection?
try
{
var path = "//192.168.49.14/Data/18 Customer Requests/Customer Request System/Request Letters/";
//Fetch all files in the Folder (Directory).
string[] filePaths = Directory.GetFiles(Path.Combine(path));
//Copy File names to Model collection.
var localFileList = new List<FileData>();
var assocFiles = new List<FileData>();
var linkedFiles = new List<FileData>();
assocFiles = localFileList.Where(x => x.FileName.Contains(id.ToString())).ToList();
foreach (var filePath in filePaths)
{
localFileList.Add(new FileData { FileName = Path.GetFileName(filePath) });
}
assocFiles = localFileList.Where(x => x.FileName.Contains(id.ToString())).ToList();
foreach (var item in assocFiles)
{
linkedFiles.Add(new FileData { FileName = Path.GetFileName(item.FileName) });
}
ViewBag.localFiles = linkedFiles;
}
catch
{
;
}
return View(Complaint);
I am trying to create an app where user can upload a text file, and gets the altered text back.
I am using React as FE and ASP.NET Core for BE and Azure storage for the database storage.
This is how my HomeController looks like.
I created a separate "UploadToBlob" method, to post the data
public class HomeController : Controller
{
private readonly IConfiguration _configuration;
public HomeController(IConfiguration Configuration)
{
_configuration = Configuration;
}
public IActionResult Index()
{
return View();
}
[HttpPost("UploadFiles")]
//OPTION B: Uncomment to set a specified upload file limit
[RequestSizeLimit(40000000)]
public async Task<IActionResult> Post(List<IFormFile> files)
{
var uploadSuccess = false;
string uploadedUri = null;
foreach (var formFile in files)
{
if (formFile.Length <= 0)
{
continue;
}
// read directly from stream for blob upload
using (var stream = formFile.OpenReadStream())
{
// Open the file and upload its data
(uploadSuccess, uploadedUri) = await UploadToBlob(formFile.FileName, null, stream);
}
}
if (uploadSuccess)
{
//return the data to the view, which is react display text component.
return View("DisplayText");
}
else
{
//create an error component to show there was some error while uploading
return View("UploadError");
}
}
private async Task<(bool uploadSuccess, string uploadedUri)> UploadToBlob(string fileName, object p, Stream stream)
{
if (stream is null)
{
try
{
string connectionString = Environment.GetEnvironmentVariable("AZURE_STORAGE_CONNECTION_STRING");
// Create a BlobServiceClient object which will be used to create a container client
BlobServiceClient blobServiceClient = new BlobServiceClient(connectionString);
//Create a unique name for the container
string containerName = "textdata" + Guid.NewGuid().ToString();
// Create the container and return a container client object
BlobContainerClient containerClient = await blobServiceClient.CreateBlobContainerAsync(containerName);
string localPath = "./data/";
string textFileName = "textdata" + Guid.NewGuid().ToString() + ".txt";
string localFilePath = Path.Combine(localPath, textFileName);
// Get a reference to a blob
BlobClient blobClient = containerClient.GetBlobClient(textFileName);
Console.WriteLine("Uploading to Blob storage as blob:\n\t {0}\n", blobClient.Uri);
FileStream uploadFileStream = File.OpenRead(localFilePath);
await blobClient.UploadAsync(uploadFileStream, true);
uploadFileStream.Close();
}
catch (StorageException)
{
return (false, null);
}
finally
{
// Clean up resources, e.g. blob container
//if (blobClient != null)
//{
// await blobClient.DeleteIfExistsAsync();
//}
}
}
else
{
return (false, null);
}
}
}
but the console throws errors, saying "'ControllerBase.File(byte[], string)' is a method, which is not valid in the given context (CS0119)"
And because of this error, another error follows "'HomeController.UploadToBlob(string, object, Stream)': not all code paths return a value (CS0161)"
my questions are
Is it a better idea to create a separate method like I did?
how can I resolve the issue regarding the "File" being valid inside of the UploadToBlob method?
If I want to add the file type validation, where should it happen? t.ex. only text file is alid
If I want to read the text string from the uploaded text file, where should I call the
string contents = blob.DownloadTextAsync().Result;
return contents;
How can I pass down the "contents" to my react component? something like this?
useEffect(() => {
fetch('Home')
.then(response => response.json())
.then(data => {
setForcasts(data)
})
}, [])
Thanks for helping this super newbie with ASP.NET Core!
1) It is ok to put uploading into separate method, it could also be put into a separate class for handling blob operations
2) File is the name of one of the controllers methods, if you want to reference the File class from System.IO namespace, you need to fully qualify the name
FileStream uploadFileStream = System.IO.File.OpenRead(localFilePath);
To the other compile error, you need to return something from the UploadToBlob method, now it does not return anything from the try block
3) File type validation can be put into the controller action method
4) it depends on what you plan to do with the text and how are you going to use it. Would it be a new action of the controller (a new API endpoint)?
5) you could create a new API endpoint for downloading files
UPDATE:
For word replacement you could use a similar method:
private Stream FindMostFrequentWordAndReplaceIt(Stream inputStream)
{
using (var sr = new StreamReader(inputStream, Encoding.UTF8)) // what is the encoding of the text?
{
var allText = sr.ReadToEnd(); // read all text into memory
// TODO: Find most frequent word in allText
// replace the word allText.Replace(oldValue, newValue, stringComparison)
var resultText = allText.Replace(...);
var result = new MemoryStream();
using (var sw = new StreamWriter(result))
{
sw.Write(resultText);
}
result.Position = 0;
return result;
}
}
it would be used in your Post method this way:
using (var stream = formFile.OpenReadStream())
{
var streamWithReplacement = FindMostFrequentWordAndReplaceIt(stream);
// Upload the replaced text:
(uploadSuccess, uploadedUri) = await UploadToBlob(formFile.FileName, null, streamWithReplacement);
}
You probably have this method inside MVC controller in which File method exists. Add in your code System.IO.File instead of File
I am trying to run a filter in MongoDB Compass and it returns all rows instead of the row that I am looking for. I can run the filter on example databases that are similar to my database without any problem.
https://i.stack.imgur.com/IBivJ.png
Here is the code that I am using to add records and select from them.
public class NoSQLDataAccess
{
// Create an instance of data factory
public NoSQLDataFactory noSQLDataFactory;
public List<dynamic> DocumentDetails { get; set; }
private IMongoCollection<dynamic> collection;
private BsonDocument bsonDocument = new BsonDocument();
public NoSQLDataAccess() { }
public void TestNoSQL()
{
MongoClient client;
IMongoDatabase database;
string connectionString = ConfigurationManager.AppSettings["NoSQLConnectionString"];
client = new MongoClient(connectionString);
database = client.GetDatabase("TestDatabase");
collection = database.GetCollection<dynamic>("TestCollection");
// Insert
List<Layer> layers = new List<Layer>();
layers.Add(new Layer { LayerId = 117368, Description = "BOOTHLAYER" });
layers.Add(new Layer { LayerId = 117369, Description = "DRAWINGLAYER" });
layers.Add(new Layer { LayerId = 117370, Description = "LAYER3" });
List<Element> elements = new List<Element>();
elements.Add(new Element { ElementId = 9250122, Type = "polyline" });
elements.Add(new Element { ElementId = 9250123, Type = "polyline" });
List<dynamic> documentDetails = new List<dynamic>();
documentDetails.Add(new DrawingDTO { Layers = layers, Elements = elements });
collection.InsertMany(documentDetails);
List<FilterDetails> filterDetails = new List<FilterDetails>();
filterDetails.Add(new FilterDetails { Type = "layers.id", Value = "117368" });
foreach (FilterDetails detail in filterDetails)
{
bsonDocument.Add(new BsonElement(detail.Type, detail.Value));
}
List<dynamic> results = collection.Find(bsonDocument.ToBsonDocument()).ToList();
}
}
I have been able to get the result I need with MongoDB shell but I have not been able to replicate the results in C#.
Here is the solution in MongoDB shell:
db.TestCollection.find({"layers.id": 117368}, {_id:0, layers: {$elemMatch: {id: 117368}}}).pretty();
I have found a post that is similar to my question that works for them. The C# code that I attached is how I will access it after I get it working properly. I use MongoDB Compass to test finds/inserts/updates/deletes.
Retrieve only the queried element in an object array in MongoDB collection
Hi all I am developing an app on salesforce.
I want to read the content of the file which is inside the zip attachment in visualforce page but without extracting the zip file.
How can I achieve this? Is there any way to do this?
Update for modified question:
Have a look at Handling Office Files and Zip Files in Apex – Part 2 by Andrew Fawcett.
There is a basic Knowledge Article on how to do this with an image that is stored in an Attachment. See How can I Display Base64 Data on page layout?
In this example the AttachmentID is passed via a query string paramemter, but you could look it up however works best for your requirement.
Visualforce page:
<apex:page controller="ViewImage" cache="true">
<img src="data:{!att.ContentType};base64,{!image}" />
</apex:page>
Controller:
public class ViewImage {
public Attachment att {
get {
if (att == null) {
String id = ApexPages.currentPage().getParameters().get('AttachmentID');
att = [SELECT Body, ContentType, Name FROM Attachment WHERE ID = :id];
}
return att;
}
private set;
}
public String image {
get {
return EncodingUtil.Base64Encode(att.body);
}
}
}
Hi all I have achieved this using JSzip library here is my code --
In apex page I have written javascript function --
function viewContent(){
var zip = null;
var zipFileName = null;
var zipFileNames = null;
data = "{!contentAsText}";
zip = new JSZip(data, {base64:true});
zipFileName = 'files.zip';
zipFileNames = [];
for(var zipfileName in zip.files){
zipFileNames.push(zipfileName);
if(zipfileName == 'index.html'){
var file = zip.files[zipfileName];
var data = file.data;
document.getElementById('contentdiv').innerHTML = data;
//var data = JSZipBase64.encode(file.data);
}
}
In controller --
public String contentAsText {get;set;}
List<Attachment> atts = [Select Id, Body from Attachment where name='files.zip' limit 1];
contentAsText = EncodingUtil.base64Encode(atts[0].Body);
This link will help you --
http://andyinthecloud.com/2012/12/09/handling-office-files-and-zip-files-in-apex-part-2/
I'm currently storing images within the webapp folder of my Lift project, which I know will cause problems in future.
val path = "src/main/webapp/files/"
And the code I'm using to save it:
case Full(file) =>
val holder = new File(path, "test.txt")
val output = new FileOutputStream(holder)
try {
output.write(file)
} finally {
output.close()
}
}
What I'm trying to do is save the to the server root in an easily manageable folder called files, so SERVER_ROOT/files outside of the project folder.
Firstly how would I access the path to the root of the server so I can save them there?
Secondly how would I serve these files from my app, so I can display them on a page?
Thanks in advance, any help much appreciated :)
You have to store file to exact place on filesystem according to absolute path. I have written this code and it works, so maybe it helps you:
def storeFile (file : FileParamHolder): Box[File] =
{
getBaseApplicationPath match
{
case Full(appBasePath) =>
{
var uploadDir = new File(appBasePath + "RELATIVE PATH TO YOUR UPLOAD DIR")
val uploadingFile = new File(uploadDir, file.fileName)
println("upload file to: " + uploadingFile.getAbsolutePath)
var output = new FileOutputStream(uploadingFile)
try
{
output.write(file.file)
}
catch
{
case e => println(e)
}
finally
{
output.close
output = null
}
Full(uploadingFile)
}
case _ => Empty
}
}
and this is my getBaseApplicationPath function which finds out absolute path of local machine (server or your devel PC):
def getBaseApplicationPath: Box[String] =
{
LiftRules.context match
{
case context: HTTPServletContext =>
{
var baseApp: String = context.ctx.getRealPath("/")
if(!baseApp.endsWith(File.separator))
baseApp = baseApp + File.separator
Full(baseApp)
}
case _ => Empty
}
}