I'm having a problem in windows phone 7 that I couldn't find answer for it.
I'm trying to write something from a textbox to a simple txt file that I have in my project files. I tried to use StreamWriter but only StreamReader works,I tread to use IsolatedStorage but again it didn't work.
So please,maybe you can find me the solution for this problem?

EDIT: 
code that I used:

```
var myStore = IsolatedStorageFile.GetUserStoreForApplication();
// Specify the file path and options.
using (var isoFileStream = new IsolatedStorageFileStream("/Discount%20it;component/Tax.txt", FileMode.OpenOrCreate, myStore))
{
    //Write the data
    using (var isoFileWriter = new StreamWriter(isoFileStream))
    {
        isoFileWriter.WriteLine(textBox1.Text);
    }
}

string fileName = "/Discount%20it;component/Tax.txt";

using (var isoStorage = IsolatedStorageFile.GetUserStoreForApplication())
{
    // we need to check to see if the file exists
    if (!isoStorage.FileExists(fileName))
    {
        // file doesn't exist...time to create it.
        isoStorage.CreateFile(fileName);
    }

    // since we are appending to the file, we must use FileMode.Append
    using (var isoStream = new IsolatedStorageFileStream(fileName, FileMode.Append, isoStorage))
    {
        // opens the file and writes to it.
        using (var fileStream = new StreamWriter(isoStream))
        {
            fileStream.Write(textBox1.Text);
        }
    }
}

```