好吧,这似乎有点奇怪:
此方法会将图片保存到 IsolatedStorage,但不允许在 html img 标签中使用它:
using (IsolatedStorageFile isopicsFile = IsolatedStorageFile.GetUserStoreForApplication())
{
if (isopicsFile.FileExists(Constants.HtmlFolderName + "launch.png") == false)
{
Stream yourFilepath = Application.GetResourceStream(new Uri("/someUri/launch.png", UriKind.Relative)).Stream;
BitmapImage b = new BitmapImage();
b.SetSource(yourFilepath);
WriteableBitmap wb = new WriteableBitmap(b);
using (var isoFileStream = isopicsFile.CreateFile(Constants.HtmlFolderName + "launch.png"))
{
var width = wb.PixelWidth;
var height = wb.PixelHeight;
// Theoretically, there may be the problem, as the file extention is png, not jpg
System.Windows.Media.Imaging.Extensions.SaveJpeg(wb, isoFileStream, width, height, 0, 100);
}
}
}
这个将保存图片并允许将其与 html 标签一起使用:
string f = "somePath/launch.png";
StreamResourceInfo sr = Application.GetResourceStream(new Uri(f, UriKind.Relative));
using (BinaryReader br = new BinaryReader(sr.Stream))
{
byte[] data = br.ReadBytes((int)sr.Stream.Length);
string fileName = "launch.png";
string filePath = Constants.HtmlFolderName + fileName;
using (IsolatedStorageFile isoStore = IsolatedStorageFile.GetUserStoreForApplication())
{
if (isoStore.FileExists(filePath))
{
isoStore.DeleteFile(filePath);
}
using (BinaryWriter bw = new BinaryWriter(isoStore.CreateFile(filePath)))
{
bw.Write(data);
bw.Close();
}
}
}
此外,在第二种情况下,图片属性必须设置为 Content + Always Copy。