/// <summary>/// 将SL的image保存到独立存储文件系统/// TFSoft - 2011/06/07/// </summary>/// <param name="ISFileName">独立存储文件名</param>/// <param name="SLImage">需要保存的图片源(Silverlihgt image 组件引用)</param>/// <returns>无错返回空串,出错返回出错信息</returns>         public static string ImageSave(string ISFileName, Image SLImage)         {var ISAccErr = "独立存储文件系统访问失败。";var Rlt = "";var WBmp = new WriteableBitmap(SLImage.Source as BitmapSource);var Buf = new byte[2 * 4 + WBmp.Pixels.Length * 4];             BitConverter.GetBytes(WBmp.PixelWidth).CopyTo(Buf, 0);             BitConverter.GetBytes(WBmp.PixelHeight).CopyTo(Buf, 4);for (var I = 0; I < WBmp.Pixels.Length; I++)             {                 BitConverter.GetBytes(WBmp.Pixels[I]).CopyTo(Buf, I * 4 + 8);             }try             {var FO = IsolatedStorageFile.GetUserStoreForApplication();var FS = FO.OpenFile(ISFileName, System.IO.FileMode.OpenOrCreate);                 FS.Write(Buf, 0, Buf.Length); FS.Close(); FS.Dispose();             }catch             {                 Rlt = ISAccErr;             }return Rlt;         }

/// <summary>/// 将保存在独立存储文件系统中的数据恢复到SL的image中/// TFSoft - 2011/06/07/// </summary>/// <param name="ISFileName">独立存储文件名</param>/// <param name="SLImage">恢复到图片源(Silverlihgt image 组件引用)</param>/// <returns>无错返回空串,出错返回出错信息</returns>         public static string ImageRestore(string ISFileName, Image SLImage)         {var ISAccErr = "独立存储文件系统访问失败。";var ISFileErr = "独立存储文件格式错误。";var Rlt = ""; var Buf = null as byte[];try             {var FO = IsolatedStorageFile.GetUserStoreForApplication();var FS = FO.OpenFile(ISFileName, System.IO.FileMode.OpenOrCreate);                 Buf = new byte[FS.Length]; FS.Read(Buf, 0, Buf.Length);                 FS.Close(); FS.Dispose();             }catch             {                 Rlt = ISAccErr;             }if (Rlt == "")             {if (!(Buf.Length >= 2 * 4))                 {                     Rlt = ISFileErr;                 }else                 {var PixelWidth = BitConverter.ToInt32(Buf, 0);var PixelHeight = BitConverter.ToInt32(Buf, 4);var WBmp = new WriteableBitmap(PixelWidth, PixelHeight);if (!(Buf.Length >= (2 * 4 + WBmp.Pixels.Length * 4)))                     {                         Rlt = ISFileErr;                     }else                     {for (var I = 0; I < WBmp.Pixels.Length; I++)                         {                             WBmp.Pixels[I] = BitConverter.ToInt32(Buf, I * 4 + 8);                         }                         SLImage.Source = WBmp;                     }                 }             }return Rlt;         }