Read and write a text file

Question

I am getting a error with this code I just want to read and write a file I tried the sample from MSDN dint understand much please help me

StorageFolder storageFolder = KnownFolders.PicturesLibrary;
            rootpage.sampleFile = await storageFolder.CreateFileAsync(Settings.filename, CreationCollisionOption.ReplaceExisting);
            OutputTextBlock.Text = "The file '" + rootpage.sampleFile.Name + "' was created.";

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pratik

Answer 1

What error are you getting and where?

What about the sample confused you?

Does your app have the pictures library capability?

Answer 2

Hi Sir,

Now I have modified the code when the textbox is getting loaded the saved text is not showing up

 private async void Save_Click(object sender, RoutedEventArgs e)
        {
            StorageFolder storageFolder = KnownFolders.PicturesLibrary;
            sampleFile = await storageFolder.CreateFileAsync(Settings.filename, CreationCollisionOption.ReplaceExisting);
            OutputTextBlock.Text = "The file '" + sampleFile.Name + "' was created.";
            
            StorageFile file = sampleFile;
            if (file != null)
            {
                try
                {
                    string userContent = tech.Text;
                    if (!String.IsNullOrEmpty(userContent))
                    {
                        await FileIO.WriteTextAsync(file, userContent);
                        OutputTextBlock.Text = "The following text was written to '" + file.Name + "':" + Environment.NewLine + Environment.NewLine + userContent;
                    }
                    else
                    {
                        OutputTextBlock.Text = "The text box is empty, please write something and then click 'Write' again.";
                    }
                }
                catch (FileNotFoundException)
                {
                    
                }
            }
            else
            {
               
            }
        }

        private async void textbox_Loaded(object sender, RoutedEventArgs e)
        {
            StorageFile file = sampleFile;
            if (file != null)
            {
                try
                {
                    string fileContent = await FileIO.ReadTextAsync(file);
                    OutputTextBlock.Text = "The following text was read from '" + file.Name + "':" + Environment.NewLine + Environment.NewLine + fileContent;
                }
                catch (FileNotFoundException)
                {
                    OutputTextBlock.Text = "The following text was read from '"; 
                }
            }
            else
            {
                OutputTextBlock.Text = "The following text was read from xyz '"; 
            }
        

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pratik

Answer 3

Sir now I am trying to do this code please do help me it is showing file not found

 private async void Save_Click(object sender, RoutedEventArgs e)
        {
            StorageFolder folder = KnownFolders.PicturesLibrary;
            StorageFile sampleFile = await folder.CreateFileAsync("sample.txt", CreationCollisionOption.ReplaceExisting);
            await Windows.Storage.FileIO.WriteTextAsync(sampleFile,textbox.text);
            
            
        }


        private async void Read_Click(object sender, RoutedEventArgs e)
        {
            StorageFolder storageFolder = KnownFolders.DocumentsLibrary;
            StorageFile sampleFile = await storageFolder.GetFileAsync("sample.txt");
            string text = await Windows.Storage.FileIO.ReadTextAsync(sampleFile);
            mntnc.Text = text;



          
        }

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pratik

Answer 4

Got it I was using the Picture Library instead of the document library 

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pratik