isolatedstorage

问题 What is wrong? I am getting this error "Operation not permitted on IsolatedStorageFileStream" in this line: using (IsolatedStorageFileStream fileStream = myIsolatedStorage.OpenFile("folder\\" + fileName, FileMode.Create)) First time runs ok, but not the second time. string nameFile= e.UserState.ToString(); Stream stream = e.Result; using (IsolatedStorageFile myIsolatedStorage = IsolatedStorageFile.GetUserStoreForApplication()) { if (!myIsolatedStorage.DirectoryExists("folder")) {

问题 What is wrong? I am getting this error "Operation not permitted on IsolatedStorageFileStream" in this line: using (IsolatedStorageFileStream fileStream = myIsolatedStorage.OpenFile("folder\\" + fileName, FileMode.Create)) First time runs ok, but not the second time. string nameFile= e.UserState.ToString(); Stream stream = e.Result; using (IsolatedStorageFile myIsolatedStorage = IsolatedStorageFile.GetUserStoreForApplication()) { if (!myIsolatedStorage.DirectoryExists("folder")) {

问题 I try to create IsolatedStorageFile with the following code: IsolatedStorageFile isf = IsolatedStorageFile.GetUserStoreForApplication(); but I get the following exception: IsolatedStoredException "Unable to determine application identity of the caller." What could be the possible reason of this? 回答1: If you're seeing this while debugging, you can resolve it by enabling ClickOnce security settings by going to the Security tab in your project's properties. This will simulate the manifest

问题 First, I know about Clog, and I do not want to implement this piece. The reason? We can't maintain severeal logging 'frameworks'. So to my question: Is it possible to implement log4net in a Silverlight application? What I want to achieve is logging to the Isolated Storage. I know, there's only 1 MB of storage available, but this limit can be increased (the user has to accept this, I know too). By the way, please don't provide me alternatives. I do only want to know if somebody implemented a

问题 Where would the physical files be? 回答1: It depends on the OS and whether or not roaming user profiles are enabled. For example, on XP, with non-roaming profiles, the location is <SYSTEMDRIVE>\Documents and Settings\<user>\Local Settings\Application Data\Microsoft\IsolatedStorage On Vista with roaming profile storage, <SYSTEMDRIVE>\Users\<user>\AppData\Roaming\Microsoft\IsolatedStorage See an Introduction to Isolated Storage for more info. 回答2: %LocalAppData%\IsolatedStorage / %AppData%

问题 Where would the physical files be? 回答1: It depends on the OS and whether or not roaming user profiles are enabled. For example, on XP, with non-roaming profiles, the location is <SYSTEMDRIVE>\Documents and Settings\<user>\Local Settings\Application Data\Microsoft\IsolatedStorage On Vista with roaming profile storage, <SYSTEMDRIVE>\Users\<user>\AppData\Roaming\Microsoft\IsolatedStorage See an Introduction to Isolated Storage for more info. 回答2: %LocalAppData%\IsolatedStorage / %AppData%

问题 Our application saves user preferences in isolated storage. However,it's proving tricky to remove these files from our uninstaller! I can enumerate all of the files in IsolatedStorage (using the MSDN example code), locate the ones that are related to our strongname key, and attempt to remove/delete them. Unfortunately, that's where it all falls apart: MaxSize is not defined for this store. An operation was performed that requires access to MaxSize. Stores obtained using enumeration APIs do

问题 In my Windows Phone application( silverlight application ), I want the user to automatically get logged-in to the application once he logs in successfully. I.e I don't want the user to login everytime. I achieved this through a Isolated Storage file concept. I.e First I created a directory and I created an isolated storage file stream and stored the email and password credentials in some file. When I stopped debugging and start it back, my stream reader reads the email-password credentials

问题 Hi I have to store some hidden information in Isolated space. For that I am using System.IO.Isolated class like IsolatedStorageFile isf = System.IO.IsolatedStorage.IsolatedStorageFile.GetStore(IsolatedStorageScope.User | IsolatedStorageScope.Assembly, null, null); Stream writer = new IsolatedStorageFileStream(filename, FileMode.Create, isf); IFormatter formatter = new BinaryFormatter(); formatter.Serialize(writer, appCollection.ToString()); writer.Close(); It works fine in Windows XP but on

问题 Hi I have to store some hidden information in Isolated space. For that I am using System.IO.Isolated class like IsolatedStorageFile isf = System.IO.IsolatedStorage.IsolatedStorageFile.GetStore(IsolatedStorageScope.User | IsolatedStorageScope.Assembly, null, null); Stream writer = new IsolatedStorageFileStream(filename, FileMode.Create, isf); IFormatter formatter = new BinaryFormatter(); formatter.Serialize(writer, appCollection.ToString()); writer.Close(); It works fine in Windows XP but on