ImageEdit 加载图片

从本地加载图片

 <dxe:ImageEdit Name="iePortrait" Height="120" Width="100"

                                   Stretch="Uniform"  ToolTip="{DynamicResource ResourceKey=ResPortrait}"

                                       Cursor="Hand" ShowMenu="False"></dxe:ImageEdit>

  public class OpenPictureCommand : Command<RegistrationEditor>

        {

            protected override void Executed(object sender, ExecutedRoutedEventArgs e)

            {

                System.Windows.Forms.OpenFileDialog ofd = new System.Windows.Forms.OpenFileDialog();

                //EventBinder.BindControls(ofd); // added

                ofd.Filter = "(*.jpg)|*.jpg";

                if (ofd.ShowDialog() == System.Windows.Forms.DialogResult.OK)

                {

                    string fileName = ofd.FileName;

                    Console.WriteLine(fileName);

                    BitmapImage img = new BitmapImage(new Uri(fileName));

                    Owner.iePortrait.EditValue = img;

                }

            }

        }

Save :

  public string BitmapimageToBase64(BitmapImage bi)

        {

            if (bi == null) return "";

            byte[] b = this.getJPGFromImageControl(bi);

            string base64String = Convert.ToBase64String(b);

            return base64String;

        }

        public byte[] getJPGFromImageControl(BitmapImage imageC)

        {

            MemoryStream memStream = new MemoryStream();

            JpegBitmapEncoder encoder = new JpegBitmapEncoder();

            encoder.Frames.Add(BitmapFrame.Create(imageC));

            encoder.Save(memStream);

            return memStream.GetBuffer();

        }

Load:

 iePortrait.EditValue = this.Base64ToBitmapImage(selectedPortrait.Portrait);

  public BitmapImage Base64ToBitmapImage(string str)

        {

            if (str == null || str=="") return null;

            byte[] imageBytes = Convert.FromBase64String(str);

            BitmapImage bitmapImage = new BitmapImage();

            MemoryStream ms = new MemoryStream(imageBytes, 0, imageBytes.Length);

            bitmapImage.BeginInit();

            bitmapImage.StreamSource = ms;

            bitmapImage.EndInit();

            return bitmapImage;

        }