WP开发图片保存到独立存储并从独立存储中读取

需要添加引用命名空间

using System.IO;

using System.IO.IsolatedStorage;

1.将图片保存到独立存储空间

            

using (IsolatedStorageFile myIsolatedStorage = IsolatedStorageFile.GetUserStoreForApplication())

            {

                if (myIsolatedStorage.FileExists(App.fileName))

                {

                    myIsolatedStorage.DeleteFile(App.fileName);

                }

                using(IsolatedStorageFileStream fileStream = myIsolatedStorage.CreateFile(App.fileName))

                {

                    BitmapImage bitmap = new BitmapImage();

                    bitmap.SetSource(stream);

                    WriteableBitmap wb = new WriteableBitmap(bitmap);

                    // Encode WriteableBitmap object to a JPEG stream.

                    wb.SaveJpeg(fileStream, wb.PixelWidth, wb.PixelHeight, 0, 90);

                }

            }

        }

2.从独立存储空间中获取图片

using (IsolatedStorageFile myIsolatedStorage = IsolatedStorageFile.GetUserStoreForApplication())

                {

                    if (myIsolatedStorage.FileExists(fileName))

                    {

                        using (IsolatedStorageFileStream fileStream = myIsolatedStorage.OpenFile(fileName, FileMode.Open, FileAccess.Read))

                        {

                            BitmapImage bmp = new BitmapImage();

                            bmp.SetSource(fileStream);

                        };

                      }
                 }