检索隔离存储Windows Phone 7中的完整文本列表
本文关键字:文本 列表 隔离 存储 Windows Phone 检索 | 更新日期: 2023-09-27 18:00:36
我试图通过数据绑定检索多个图像和文本,但我只能检索到隔离存储中的第一个文本(下面的代码)。
是否可以通过将数据绑定到ListBox中来检索多个文本?
string imageFileName = App.imagePath;
string a;
object b;
sting h;
int i;
string noteSeparate;
private void Library_Loaded(object sender, RoutedEventArgs e)
{
if (MainListBox.Items.Count == 0)
{
//To save the separated note by '^'
string[] noteSeparated;
//Read the file and display it line by line.
IsolatedStorageFile myStore = IsolatedStorageFile.GetUserStoreForApplication();
//Read the note saved in myFile.txt
StreamReader readFile = new StreamReader(new IsolatedStorageFileStream("ViewFolder''myFile.txt", FileMode.Open, myStore));
try
{
String fileText = readFile.ReadLine();
//noteSeparated is the variable that save the retrieve note from myFile.txt and is noteSeparated by '^'
noteSeparated = fileText.Split(new char[] { '^' });
for (i = 0; i < noteSeparated.Length; i = i + 3)
{
noteSeparate = noteSeparated[i];
a = noteSeparate;
break;
}
h = a;
readFile.Close();
}
catch (Exception)
{
noNoteBlock.Visibility = Visibility.Visible;
}
}
string imageFolder = "imageFolder";
var isoFile = IsolatedStorageFile.GetUserStoreForApplication();
// Check if directory exists
if (!isoFile.DirectoryExists(imageFolder))
{
//isoFile.CreateDirectory(imageFolder);
throw new Exception("Image directory not found");
}
ObservableCollection<Items> LibraryItems = new ObservableCollection<Items>();
// Get files
foreach (string fileName in isoFile.GetFileNames())
{
//string filePath = Path.Combine(imageFolder, imageFileName);
string filePath = Path.Combine(imageFolder, fileName);
using (var imageStream = isoFile.OpenFile(filePath, FileMode.Open, FileAccess.Read))
{
var imageSource = PictureDecoder.DecodeJpeg(imageStream);
BitmapImage bi = new BitmapImage();
ListBoxItem item = new ListBoxItem();
bi.SetSource(imageStream);
item.Content = new Image() { Source = bi, MaxHeight = 100, MaxWidth = 100, Margin = new Thickness(0, 0, 0, 20) };
//MainListBox.Items.Add(item);
b = bi;
}
LibraryItems.Add(new Items(b, h));
MainListBox.ItemsSource = LibraryItems;
}
}
有人能帮我检索保存在隔离存储中的所有文本吗隔离文件中的文本格式为"noteTitle^note^imagePath^noteTitle^notes^imagePath^…."依此类推。我正在尝试仅检索所有noteTitle。
有人能帮我获得所有noteTitle only吗?
使用Regex
:
using (var streamReader = new StreamReader(new IsolatedStorageFileStream("ViewFolder''myFile.txt", FileMode.Open, myStore)))
{
var text = streamReader.ReadToEnd();
var titles = Regex.Matches(text, @"(?<title>[^'^]+)'^(?<note>[^'^]+)'^(?<imagePath>[^'^]+)")
.Cast<Match>()
.Select(arg => arg.Groups["title"])
.ToList();
}
或使用Split
using (var streamReader = new StreamReader(new IsolatedStorageFileStream("ViewFolder''myFile.txt", FileMode.Open, myStore)))
{
var text = streamReader.ReadToEnd();
var i = 0;
var titles = text.Split('^').Where(arg => i++ % 3 == 0).ToList();
}
[EDIT]将列表绑定到ListBox
:
private void Library_Loaded(object sender, RoutedEventArgs e)
{
using (var streamReader = new StreamReader(new IsolatedStorageFileStream("ViewFolder''myFile.txt", FileMode.Open, myStore)))
{
var text = streamReader.ReadToEnd();
var i = 0;
MainListBox.ItemsSource = text.Split('^').Where(arg => i++ % 3 == 0).ToList();
}
}
[EDIT]
替换这段代码:
String fileText = readFile.ReadLine();
//noteSeparated is the variable that save the retrieve note from myFile.txt and is noteSeparated by '^'
noteSeparated = fileText.Split(new char[] { '^' });
for (i = 0; i < noteSeparated.Length; i = i + 3)
{
noteSeparate = noteSeparated[i];
a = noteSeparate;
break;
}
h = a;
带有:
var fileText = readFile.ReadToEnd();
var i = 0;
var titles = fileText .Split('^').Where(arg => i++ % 3 == 0).ToList();
titles
将是notTitle
的列表。