How to fix exception MethodAccessException during file reading?

问题

I have to read a text file which added in my project DataMid/Bigram_MidWord.txt where DataMid is a folder and Bigram_MidWord.txt is a file to read. When i write the statement

FileStream fileStream = new FileStream(@"/SourceCode,component/DataMid/Bigram_MidWord.txt", FileMode.Open, FileAccess.ReadWrite);

then i get the exception as follows:
Attempt to access the method failed: System.IO.FileStream..ctor(System.String, System.IO.FileMode, System.IO.FileAccess)

How can I fix this issue?

回答1:

The problem is that you are trying to use FileStream to access a resource that is embedded in your application's XAP file. FileStream is used for accessing the file system (e.g. isolated storage).

To access a text file that is a resource in your XAP file, you can use the following code:

string text;
Uri uri = new Uri("("/AssembyName;component/DataMid/Bigram_MidWord.txt", UriKind.RelativeOrAbsolute);
StreamResourceInfo sri = App.GetResourceStream(uri);
StreamReader sr = new StreamReader(sri.Stream);
text= sr.ReadToEnd();
sr.Close();

来源：https://stackoverflow.com/questions/5458663/how-to-fix-exception-methodaccessexception-during-file-reading