I am trying to read XMl local file, but' ive got the error: System.NullReferenceException: 'Object reference not set to an instance of an object.' I must add that stream is null.
Below is my code:
InitializeComponent();
var assembly = typeof(MainPage).GetTypeInfo().Assembly;
Stream stream = assembly.GetManifestResourceStream("AppXMLTEST.MyResources.XMLFile.xml");
ObservableCollection<Person> PersonInformation;
var serializer = new XmlSerializer(typeof(ObservableCollection<Person>));
PersonInformation = (ObservableCollection<Person>)serializer.Deserialize(stream);
listView.ItemsSource = PersonInformation;
Right-click on the file in Solution Explorer and choose Properties. In the Properties window, under the Advanced section, use the drop-down list next to Build Action to set a build action for the file. And make sure the option is Embedded Resource .
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/ .
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
I am trying to override the javascript controller node-header.js of components\node-details with the extension module of alfresco share
This is my node-header.get.js
<import resource="classpath:/alfresco/templates/org/alfresco/import/alfresco-util.js">
for (var i=0; i<model.widgets.length; i++)
{
if (model.widgets[i].id == "NodeHeader")
{
if(model.widgets[i].options.nodeRef!=null)
{
var jsNode = new Alfresco.util.Node(model.widgets[i].options.nodeRef);
if(jsNode.hasAspect("custom:intranetFile")){
model.widgets[i].options.showFavourite = false;
model.widgets[i].options.showLikes = false;
}
}
}
}
I am getting this error
Error Message: 05270002 Failed to execute script
'classpath*:webscripts/custom/nodeheader/hidelikesync/node-header.get.js':
05270001 ReferenceError: "Alfresco" is not defined.
(jar:file:/C:/Alfresco/Alfresco42/tomcat/webapps/share/WEB-INF/lib/customshare.jar!/webscripts/custom/nodeheader/hidelikesync/node-header.get.js#1555)
Error lies in this line
var jsNode = new Alfresco.util.Node(model.widgets[i].options.nodeRef);
as Alfresco object is not available how can I get it?
Based on my answer yesterday on the share-extras-devel list:
Your issue is that you are mixing up your web script JS with client-side JavaScript. Alfresco.util.Node is a client-side helper class and is therefore available to client-side JS running in the web browser, but not to your web script code which runs on the server.
If you look at the source of alfresco-util.js, which you are including, you will see that there is a helper class there but it is called AlfrescoUtil.
To get some information on this given node I would suggest that you want to use the static method AlfrescoUtil.getNodeDetails() from that class, e.g.
var jsNode = AlfrescoUtil.getNodeDetails(model.widgets[i].options.nodeRef);
The structure of the jsNode object will be as per the JSON returned by the doclist-v2 webscripts, so you should be able to check for the presence of your custom aspect in the aspects array property.
If you check the source of alfresco-util.js you will see that additional parameters are also supported by getNodeDetails(). It seems to me you can also pass in an optional site name, plus some options if you wish.
I am invoking the Tridion 2011 SP1 core service via the shipped client assembly. When I attempt to list the contents of a publication, I get an exception.
The code (simplified) looks like this:
ItemsFilterData filter = new Tridion.ContentManager.CoreService
.Client.RepositoryItemsFilterData.RepositoryItemsFilterData();
filter.ItemTypes = new ItemType[] {
ItemType.Folder,
ItemType.StructureGroup
};
filter.Recursive = false;
IEnumerable<IdentifiableObjectData> childItems = core.GetList("tcm:0-15-1", filter);
Note: the variable "core" refers to an ISessionAwareCoreService which I can successfully use to call, for example core.GetSystemWideList()
When .GetList is invoked, I get the following exception:
System.ServiceModel.FaultException`1 was unhandled
Message=Unexpected list type:
Tridion.ContentManager.Data.ContentManagement.RepositoryItemsFilterData.
What are the possible causes of this problem? Can you suggest a good general approach for interpreting this kind of message?
You can't get the direct children of a Publication using GetList. Instead you should just load the PublicationData with a client.Read and then access the RootFolder and RootStructureGroup on that.
PublicationData pub = (PublicationData)core.Read("tcm:0-1-1", new ReadOptions());
string rootFolder = pub.RootFolder.IdRef;
string rootSG = pub.RootStructureGroup.IdRef;
Alternatively you can call GetListXml with your RepositoryItemsFilterData and extract the items from the XML yourself.
XElement listResult = core.GetListXml(parent.ID, filter);
I am working on the multifile uploader, and want to set the upload directory based on a selected questionID (which is the directory name) in my datagrid.
The code can be found here http://pastie.org/784185
Something like this:
I have set myQuestionID (the directory to upload to) so it is bindable (lines 136-137):
[Bindable] public var myQuestionID:int;
In my datagrid I use a change handler (line 539):
change="setQuestionID();"
We set the variable in the setQuestionID function (lines 400-407):
[Bindable (event="questionChange")]
private function setQuestionID():void
{
myQuestionID = questionsDG.selectedItem.QuestionID;
dispatchEvent(new Event("questionChange"));
}
And then try to use it in my uploader script (lines 448-475):
// initUploader is called when account info loads
public function getSessionInfoResult(event:ResultEvent):void{
// Get jsessionid & questionid (final directory) for CF uploader
myToken = roAccount.getSessionToken.lastResult;
// BUG: myQuestion is null in actionscript, but okay in form.
var postVariables:URLVariables = new URLVariables();
postVariables.jsessionid = myToken;
postVariables.questionid = myQuestionID;
multiFileUpload = new MultiFileUpload(
filesDG,
browseBTN,
clearButton,
delButton,
upload_btn,
progressbar,
uploadDestination,
postVariables,
350000,
filesToFilter
);
multiFileUpload.addEventListener(Event.COMPLETE,uploadsfinished);
}
I can see in my MXML that the value binded (line 639):
<mx:Label text="{myDirectory}"/>
and it updates when I click a row in my datagrid. However, if I try to access this myQuestionID value inside any action script it will show as null (0). I know my uploader is working as I can hardcode myDirectory to a known directory and it will upload okay.
I'm really stumped.
The reason questionid = null is that getSessionInfoResult() is called by your init code before the bound value of myQuestionID is set.
So your file uploader (multiFileUpload) is already instantiated with myQuestionID = null.
You need to instantiate/pass the value into the multiFileUpload component after it is set.
Use dataGrid change event to set myDirectory everytime the selection has changed by user. this will update the value of myDirectory properly.
By making someID as Bindable would mostly solve your problem if you dont want to use change event on DG