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我在我的应用程序中从独立存储设置加载图像路径。将图像从独立存储加载到可观察集合不起作用
[DataMember]
public string entryImage = "";
[DataMember]
public string EntryImage
{
get { return entryImage; }
set { entryImage = value; }
}
使用助手类将图像存储到独立的存储文件中。
public static void SaveImage(Stream imageStream, string directory, string filename)
{
try
{
string path = System.IO.Path.Combine(directory, filename);
using (IsolatedStorageFile isoStore = IsolatedStorageFile.GetUserStoreForApplication())
{
if (!isoStore.DirectoryExists(directory)) isoStore.CreateDirectory(directory);
using (var writeStream = isoStore.CreateFile(path))
{
byte[] buffer = new byte[32768];
while (true)
{
int read = imageStream.Read(buffer, 0, buffer.Length);
if (read <= 0)
return;
writeStream.Write(buffer, 0, read);
}
}
}
}
// Catch exception if unable to save the image
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
这里是我存放的ImagePath到的ObservableCollection
MyDiaryItem _saveItems = new MyDiaryItem();
_saveItems.EntryNotes = InputText.Text;
_saveItems.EntryDate = date.ToString();
_saveItems.EntryImage = AppHelper.ImageDirectory + AppSettings.ImageFilename;
的部分在哪里MyDiaryItem是观察集合
public ObservableCollection<MyDiaryItem> diaryItems = null;
独立存储保存和载入
void LoadSettings()
{
if (settings.Contains("DiaryItems"))
{
diaryItems = new ObservableCollection<MyDiaryItem>((List<MyDiaryItem>)settings["DiaryItems"]);
}
}
void SaveSettings()
{
//settings["DiaryItems"] = diaryItems.ToList();
if (diaryItems.ToList() != null)
{
settings.Clear();
settings.Add("DiaryItems", diaryItems.ToList());
settings.Save();
}
}
下面是图片来源
<ListBox toolkit:TiltEffect.IsTiltEnabled="true" Name="AllEntriesList"
Margin="0,0,-12,0"
SelectionChanged="AllEntriesList_SelectionChanged">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal" Margin="0,0,0,17">
<Image Source="{Binding EntryImage}" Height="100" Width="100" Stretch="Fill" Margin="12,0,9,0" />
<StackPanel Margin="0,0,0,17" Width="350" Height="Auto">
<TextBlock Text="{Binding EntryLocation}" TextWrapping="Wrap" Style="{StaticResource PhoneTextLargeStyle}" />
<TextBlock Text="{Binding EntryNotes}" TextWrapping="Wrap" Style="{StaticResource PhoneTextNormalStyle}" />
<TextBlock Text="{Binding EntryDate}" TextWrapping="Wrap" Style="{StaticResource PhoneTextSubtleStyle}" />
</StackPanel>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
的XAML代码我想一些如何使用来自独立存储retrived以显示diaryitems列表中的图像的ImagePath。
我在我的OnNavigatedTo函数中加载所有的日记文件就像这样。
AllEntriesList.ItemsSource = app.diaryItems;
我可以在diaryItems列表中看到正确填充的图像名称。我想在diaryItems列表中显示图像。怎么做 ?
@MyKuLLSKI - 请不要编辑问题,说它可能是重复的。这是结束或评论的目的。 – 2012-02-08 15:00:05
@Erno - 请告诉我一个引用这条规则的链接。谢谢 – MyKuLLSKI 2012-02-08 15:25:43
http://meta.stackexchange.com/questions/121652/adding-possible-duplication-above-original-question – 2012-02-08 15:51:09