WPF上传图片到服务器文件夹
1.前端用ListBox加载显示多张图片
1 <ListBox Name="lbHeadImages" Grid.Row="1" ScrollViewer.HorizontalScrollBarVisibility="Disabled"> 2 <ListBox.ItemTemplate> 3 <DataTemplate> 4 <Grid > 5 <Rectangle Fill="#fff"> 6 <Rectangle.Effect> 7 <DropShadowEffect Opacity="0.5" ShadowDepth="0"/> 8 </Rectangle.Effect> 9 </Rectangle> 10 <StackPanel Margin="2"> 11 <Image Stretch="UniformToFill" Width="100" Height="120" VerticalAlignment="Center" HorizontalAlignment="Center" 12 Source="{Binding Image,Mode=TwoWay,NotifyOnSourceUpdated=True}" 13 MouseLeftButtonDown="Image_MouseLeftButtonDown"></Image> 14 </StackPanel> 15 </Grid> 16 </DataTemplate> 17 </ListBox.ItemTemplate> 18 <ListBox.ItemsPanel> 19 <ItemsPanelTemplate> 20 <WrapPanel Name="wrapPanel" HorizontalAlignment="Stretch" /> 21 <!--<UniformGrid Columns="6"></UniformGrid>--> 22 </ItemsPanelTemplate> 23 </ListBox.ItemsPanel> 24 </ListBox>
2.客户端——选择图片(可选择多张)，前台加载显示
1 private void btnSelectBehindImage_Click(object sender, RoutedEventArgs e) 2 { 3 OpenFileDialog openFileDialog = new OpenFileDialog(); 4 openFileDialog.Multiselect = true; 5 openFileDialog.Filter = "All Image Files|*.jpg;*.png"; 6 if ((bool)openFileDialog.ShowDialog()) { 7 if (openFileDialog.OpenFile() != null) { 8 behindImages.Clear(); 9 string[] fileNames = openFileDialog.FileNames; 10 List<FinishProRptCheckVM.ImageRow> items = new List<FinishProRptCheckVM.ImageRow>(); 11 for (int i = 0; i < fileNames.Count(); i ++) { 12 string filePath = fileNames[i]; 13 var size = new FileInfo(filePath).Length / 1024 /1024; //获取文件大小（M） 14 if (size >= 1) { MessageBox.Show("上传图片大小不能超过1M!");return; } 15 byte[] bytes = File.ReadAllBytes(filePath); 16 behindImages.Add(bytes); 17 18 FinishProRptCheckVM.ImageRow row = new FinishProRptCheckVM.ImageRow() { Image = new BitmapImage(new Uri(filePath))}; 19 items.Add(row); 20 } 21 lbBehindImages.ItemsSource = items; 22 } 23 } 24 }
3.客户端上传图片
1 private bool UploadImage(string bill_no) 2 { 3 //上传服务器文件夹 4 string url = "/api/qc/iqc/experimentrptservice/uploadfile"; 5 var result = Framework.PostData(url, lstBytes1, behindImages, bill_no); 6 if (result.success && result.data) 7 { 8 return true; 9 } 10 else 11 { 12 return false; 13 } 14 }
4.服务端保存图片到服务器文件夹
1 public static object UploadFile(List<byte[]> headerPhoto,List<byte[]> behindPhoto,string billNo) { 2 try 3 { 4 //获取保存文件的文件夹路径 5 string filePath = "D:\\image\\"; 6 if (!System.IO.Directory.Exists(filePath))//文件夹不存在创建文件夹 7 { 8 Directory.CreateDirectory(filePath); 9 } 10 else {//文件夹存在，找对应实验是否存在上传过的图片,存在则删除 11 string[] strDataFiles = Directory.GetFiles(basepath, "*"+ billNo + "*", SearchOption.TopDirectoryOnly);12 var imageFiles = from a in strDataFiles where a.Contains(billNo) && (a.EndsWith(".png") || a.EndsWith(".jpg")) select a; 13 foreach (string imagePath in imageFiles) { 14 File.Delete(imagePath); 15 } 16 } 17 //保存实验前图片 18 for (int i = 0; i < headerPhoto.Count; i++)//遍历二进制的数组的数组 19 { 20 string strRiQiWenJian = "实验前" + i.ToString() + "_" + billNo + ".png"; 21 string strBaoCunLuJing = "D:\\image\\" + strRiQiWenJian; 22 FileInfo fi = new FileInfo(strBaoCunLuJing); 23 FileStream fs; 24 fs = fi.OpenWrite(); 25 fs.Write(headerPhoto[i], 0, headerPhoto[i].Length); 26 fs.Flush(); 27 fs.Close(); 28 } 29 return true; 30 } 31 catch 32 { 33 return false; 34 } 35 }
5.客户端，进入界面，初始化从服务器加载对应图片显示
1 public void LoadImages (){ 2 string url = "/api/qc/iqc/experimentrptservice/loadimages?bill_no=" + ParamModel.BILL_NO; 3 var result = Framework.GetData(url); 4 if (result.success){ 5 lstBytes1 = JsonConvert.DeserializeObject<List<byte[]>>(result.data.HeaderBytePic.ToString()); 6 behindImages = JsonConvert.DeserializeObject<List<byte[]>>(result.data.BehindBytePic.ToString()); 7 8 //加载实验前图片 9 List<FinishProRptCheckVM.ImageRow> headerImages = new List<FinishProRptCheckVM.ImageRow>(); 10 for (int i = 0; i < lstBytes1.Count;i++) { 11 BitmapImage img = new BitmapImage(); 12 img.BeginInit(); 13 img.StreamSource = new MemoryStream(lstBytes1[i]); 14 img.EndInit(); 15 //img.Freeze(); 16 FinishProRptCheckVM.ImageRow row = new FinishProRptCheckVM.ImageRow() { Image = img }; 17 headerImages.Add(row); 18 } 19 lbHeadImages.ItemsSource = headerImages; 20 } 21 }
6.服务端查找要加载的图片（loadimages）
1 public static object LoadImages(string billNo) { 2 List<byte[]> headerBytePic = new List<byte[]>(); 4 string basepath = "D:\\image\\"; 5 if (!System.IO.Directory.Exists(basepath)) 6 { 7 return new { HeaderBytePic = headerBytePic, BehindBytePic = behindBytePic }; 8 } 9 string[] strDataFiles = Directory.GetFiles(basepath, "*"+ billNo + "*", SearchOption.TopDirectoryOnly); 10 11 //实验前 12 var headerPaths = from a in strDataFiles where a.Contains("实验前") && a.Contains(billNo) 13 && (a.EndsWith(".png") || a.EndsWith(".jpg")) select a; 14 foreach (string headerPath in headerPaths) { 15 byte[] bytes = File.ReadAllBytes(headerPath); 16 headerBytePic.Add(bytes); 17 }
26 return new {HeaderBytePic = headerBytePic}; 27 }
效果图
