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本帖最后由 agameboy 于 2012-5-17 17:08 编辑对于很多应用,向隔离存储空间读取、保存图片文件是很常见的任务。在中,你还可以保存、读取媒体库中的图片。更多的文章请参考!引用命名空间:using System.IO;using System.IO.IsolatedStorage;using System.Windows.Media.Imaging;using System.Windows.Resources;using Microsoft.Phone.Tasks;using Microsoft.Xna.Framework.Media;关心:Microsoft.Xna.Framework.Media;仅当你要把图片保存到库的时候才需要添加引用。一般情况下我们使用类进行读、写、创建文件等操作。对于图片,最大的不同就是使用类BitmapImage和类WriteableBitmap.保存Image: - private void btSaveImage_Click(object sender, RoutedEventArgs e)
- {
- String strTempJPEG = "iamge111.png";
- using(IsolatedStorageFile iso=IsolatedStorageFile.GetUserStoreForApplication ())
- {
- if (iso.FileExists (strTempJPEG ))
- {
- iso.DeleteFile(strTempJPEG );
- }
- using(IsolatedStorageFileStream isostream=iso.CreateFile(strTempJPEG))
- {
- StreamResourceInfo sri = null;
- Uri uri = new Uri(strTempJPEG ,UriKind.Relative);
- sri = Application.GetResourceStream(uri);
-
- BitmapImage bitmap = new BitmapImage();
- bitmap.SetSource(sri.Stream );
- WriteableBitmap wb = new WriteableBitmap(bitmap);
- Extensions.SaveJpeg(wb ,isostream,wb.PixelWidth,wb.PixelHeight,0,85);
- isostream.Close();
- }
- }
-
- }
复制代码 读取Image: - private void btScanImage_Click(object sender, RoutedEventArgs e)
- {
- BitmapImage bitmap = new BitmapImage();
- using(IsolatedStorageFile iso=IsolatedStorageFile.GetUserStoreForApplication ())
- {
- using(IsolatedStorageFileStream isostream=iso.OpenFile ("iamge111.png",FileMode.Open ,FileAccess.Read ))
- {
- bitmap.SetSource(isostream);
- this.image.Height = bitmap.PixelHeight;
- this.image.Width = bitmap.PixelWidth;
- }
- }
- this.image.Source = bitmap;
- }
复制代码 |
转载于:https://www.cnblogs.com/Belling/archive/2012/11/29/2794598.html