Opening & editing a txt file

Question

Hello everybody,

i'm new to Windows 8 and WinJS and i have a question. How can i open a .txt file and write new content( with the old content) in this .txt file?

It would be awesome if somebody can help me :)

Sincerly, saiikon

Answer 1

Hi,

Please refer the example as follow:

//var jsonText = JSON.stringify(activitiesArray)  
    var jsonText="hey, I am transfered";  
  
    var localFolder = Windows.Storage.ApplicationData.current.localFolder;  
    //localFolder.createFileAsync("myfile.data", Windows.Storage.CreationCollisionOption.replaceExisting)  
    //    .then(function (file) {  
    //        return Windows.Storage.FileIO.writeTextAsync(file, jsonText);  
    //    });  
  
  
    localFolder.getFileAsync("myfile.data")  
                    .then(function (file) {  
                        return Windows.Storage.FileIO.readTextAsync(file);  
                    }).done(function (text) {  
                        // activitiesArray = JSON.parse(text);  
                        document.getElementById("content").innerHTML=text;  
                    });  

---

Please mark the replies as answers if they help or unmark if not.
If you have any feedback about my replies, please contact [e-mail]
Microsoft One Code Framework

Answer 2

Hey man!

Thansk for the answer, i have tried this code now and it does nothing :/ No error or something else..

    function writeFile(input) {
        var applicationData = Windows.Storage.ApplicationData.current;
        var localFolder = applicationData.localFolder;

        localFolder.getFileAsync("last.txt")
           .then(function (sampleFile) {
               var old = Windows.Storage.FileIO.readTextAsync(sampleFile);
               return Windows.Storage.FileIO.writeTextAsync(sampleFile, old + input);
           });
    }

Answer 3

Hi,

Please refer to the code as follow:

localFolder.getFileAsync("myfile.data")
                    .then(function (file) {
                        Windows.Storage.FileIO.writeTextAsync(file, "I am rewrite again again").done(function () {
                            localFolder.getFileAsync("myfile.data")
                    .then(function (file) {
                        return Windows.Storage.FileIO.readTextAsync(file);
                    }).done(function (text) {
                        // activitiesArray = JSON.parse(text);
                        document.getElementById("content").innerHTML = text;
                    });
                        });
                    });

More details, please refer to: http://msdn.microsoft.com/en-us/library/windows/apps/hh701508.aspx .

---

Please mark the replies as answers if they help or unmark if not.
If you have any feedback about my replies, please contact [e-mail]
Microsoft One Code Framework