部分方法实现

Src/FrmMain.cs

@@ -122,6 +122,7 @@ namespace Kivii.Sample.ImageUploader
                     // add all devices to combo
                     cameraQuantity = videoDevices.Count;
                     videoDevice = new VideoCaptureDevice(videoDevices[currentCameraIndex].MonikerString);
+                    gbCamView.Text = videoDevices[currentCameraIndex].Name;
                     enumeratedSupportedFrameSizes(videoDevice);
                 }
                 else
@@ -135,6 +136,21 @@ namespace Kivii.Sample.ImageUploader
             }
         }
 
+        private void switchCamera()
+        {
+            if (videoDevice.IsRunning)
+            {
+                Disconnect();
+            }
+            if (currentCameraIndex + 1 > cameraQuantity - 1) currentCameraIndex = 0;
+            else currentCameraIndex = currentCameraIndex + 1;
+            videoDevice = new VideoCaptureDevice(videoDevices[currentCameraIndex].MonikerString);
+            gbCamView.Text = videoDevices[currentCameraIndex].Name;
+            enumeratedSupportedFrameSizes(videoDevice);
+            // 默认选择第一个分辨率
+            cbxResolution.SelectedIndex = 0;
+        }
+
         /// <summary>
         /// 列出摄像头支持的分辨率
         /// </summary>
@@ -143,7 +159,6 @@ namespace Kivii.Sample.ImageUploader
         {
             this.Cursor = Cursors.WaitCursor;
             cbxResolution.Items.Clear();
-
             try
             {
                 // 获取摄像头支持的分辨率列表
@@ -176,7 +191,6 @@ namespace Kivii.Sample.ImageUploader
             {
                 videoDevice.VideoResolution = videoCapabilities[selectedIndex];
             }
-
             vspCamView.VideoSource = videoDevice;
             vspCamView.Start();
         }
@@ -216,6 +230,7 @@ namespace Kivii.Sample.ImageUploader
                 initFormCtlEnable(false);
                 setDefault(tbxServiceUrl, tbxUserName, tbxPassword);
                 Thread.Sleep(100);
+                if (videoDevice == null) initCameras();
                 // 默认选择第一个分辨率
                 cbxResolution.SelectedIndex = 0;
             }, true);
@@ -224,7 +239,8 @@ namespace Kivii.Sample.ImageUploader
                 initFormCtlEnable();
                 _client.Dispose();
                 _client = null;
-                MessageBox.Show(err.Message, "Login Error");
+                var msg = err.GetResponseStatus().Message;
+                MessageBox.Show(msg, "Login Error");
             }, true);
         }
 
@@ -264,5 +280,97 @@ namespace Kivii.Sample.ImageUploader
         {
             Disconnect();
         }
+
+        private void btnSwitch_Click(object sender, EventArgs e)
+        {
+            switchCamera();
+        }
+
+        private void btnShot_Click(object sender, EventArgs e)
+        {
+            try
+            {
+                if (videoDevice != null && vspCamView.IsRunning)
+                {
+                    // 捕获当前帧
+                    Bitmap bitmap = vspCamView.GetCurrentVideoFrame();
+                    ptbPhotoDisplay.Image = bitmap;
+
+                    // 创建图片 PictureBox 控件
+                    PictureBox pictureBox = new PictureBox();
+                    pictureBox.SizeMode = PictureBoxSizeMode.Zoom;
+                    pictureBox.Dock = DockStyle.Fill;
+                    pictureBox.Image = bitmap;
+
+                    // 添加图片点击动作
+                    pictureBox.Click += PictureBox_Click;
+
+                    // 创建图片名称的 Label 控件
+                    Label nameLabel = new Label();
+                    String name = DateTime.Now.ToString("yyyy-MM-dd HH-mm-ss");
+                    nameLabel.Text = name;
+                    nameLabel.Dock = DockStyle.Fill;
+                    nameLabel.TextAlign = ContentAlignment.MiddleCenter;
+
+                    // 创建 SplitContainer 控件
+                    SplitContainer splitContainer = new SplitContainer();
+                    splitContainer.Size = new Size(210, 140);
+                    splitContainer.Orientation = Orientation.Horizontal;
+                    splitContainer.SplitterWidth = 1;
+                    splitContainer.SplitterDistance = 100;
+                    splitContainer.Panel1.Padding = new Padding(0, 10, 0, 0);
+                    splitContainer.Panel1.Controls.Add(pictureBox);
+                    splitContainer.Panel2.Controls.Add(nameLabel);
+
+                    // 将 SplitContainer 添加到 flpPhotosTaken 中
+                    flpPhotosTaken.Controls.Add(splitContainer);
+                    // 改变排序，将新增的添加到顶部
+                    flpPhotosTaken.Controls.SetChildIndex(splitContainer, 0);
+
+                    // 将拍摄的照片对象添加到集合中
+                    photos.Add(new Photo(bitmap, name));
+
+                    // 遍历 flpPhotosTaken 中的控件，将之前选中的 SplitContainer 边框改为默认
+                    foreach (Control control in flpPhotosTaken.Controls)
+                    {
+                        if (control is SplitContainer controlContainer)
+                        {
+                            controlContainer.BorderStyle = BorderStyle.None;
+                        }
+                    }
+                    // 为新添加的 SplitContainer 添加边框
+                    splitContainer.BorderStyle = BorderStyle.FixedSingle;
+                }
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show("无法拍照" + ex.Message);
+            }
+        }
+
+        private void PictureBox_Click(object sender, EventArgs e)
+        {
+            // 获取点击的 PictureBox 中的图片
+            PictureBox pictureBox = (PictureBox)sender;
+
+            // 遍历 flpPhotosTaken 中的控件，找到对应的 SplitContainer，并为其设置边框样式
+            foreach (Control control in flpPhotosTaken.Controls)
+            {
+                if (control is SplitContainer splitContainer)
+                {
+                    // 如果 SplitContainer 包含点击的 PictureBox，则设置其边框,否则设置为默认
+                    if (splitContainer.Panel1.Controls.Count > 0 && splitContainer.Panel1.Controls[0] == pictureBox)
+                    {
+                        splitContainer.BorderStyle = BorderStyle.FixedSingle;
+                    }
+                    else
+                    {
+                        splitContainer.BorderStyle = BorderStyle.None;
+                    }
+                }
+            }
+            // 在界面中的 PictureBox 中显示该图片
+            ptbPhotoDisplay.Image = (Bitmap)pictureBox.Image;
+        }
     }
 }