添加图片 image和byte[] 的相互转换

最新推荐文章于 2019-07-20 19:59:09 发布

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最新推荐文章于 2019-07-20 19:59:09 发布

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分类专栏： C#学习和进阶文章标签：图片 wpf image-byte

本文链接：https://blog.youkuaiyun.com/qq_32493189/article/details/53057204

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SilverLight中
1.添加图片并转换成byte[]数组

using System.IO;
using System.Linq;
using System.Windows.Media.Imaging;
public void Browse_Click(object sender, RoutedEventArgs e)
        {
            OpenFileDialog dlg = new OpenFileDialog();
            dlg.Filter = "图片|*.jpg;*.png;*.gif;*.bmp;*.jpeg";

            Nullable<bool> result = dlg.ShowDialog();

            if (result == true)
            {
                string filename = dlg.File.Name;
                ImgText = filename;

                using (FileStream textStream = dlg.File.OpenRead())
                {
                    //创建字节流数组
                    byte[] bytes = new byte[textStream.Length];

                    //读取相关数据
                    textStream.Read(bytes, 0, Convert.ToInt32(textStream.Length));
                    Img = bytes;
                }

            }
        }

2.将byte[]数据转换成图片在image控件中显示出来

   public void getImage(byte[] img)
        {
            Stream ms = new MemoryStream(img);
            BitmapImage bitmap = new BitmapImage();
            bitmap.SetSource(ms);
            ImgSource = bitmap;
        }

WPF中

//添加图片转换为byte[]
  public void Browse_Click(object sender, RoutedEventArgs e)
        {
            Microsoft.Win32.OpenFileDialog dlg = new Microsoft.Win32.OpenFileDialog();
            dlg.Filter = "图片|*.jpg;*.png;*.gif;*.bmp;*.jpeg";
            dlg.Multiselect = false;

            if (dlg.ShowDialog() == true)
            {
                string filename = dlg.FileName;
                ImgText = filename;

                using (Stream textStream = dlg.OpenFile())
                {
                    //创建字节流数组
                    byte[] bytes = new byte[textStream.Length];

                    //读取相关数据
                    textStream.Read(bytes, 0, Convert.ToInt32(textStream.Length));
                    Dug_Img = bytes;

                }

            }
        }

//image转换为byte[]
 public void showImg(object sender, RoutedEventArgs e, object view)
        {
            try
            {
                ProjectTestProperty dug = (ProjectTestProperty)view;
                byte[] img = dug.Dug_Img;
                if (img != null)
                {
                    MemoryStream stream = new MemoryStream(img);
                    BitmapImage image = new BitmapImage();
                    image.BeginInit();
                    image.StreamSource = stream;
                    image.EndInit();
                    Project.SourceImg = image;
                    ImgSource = Project.SourceImg;
                    WinDow.ImageWindow = new Views.ProjectManagement.BugView.ImageView();
                    WinDow.ImageWindow.Show();
                }
            }
            catch
            {
                MessageBox.Show("打开图片失败", "Error");
                return;
            }

        }