优化相机拍照后文件下载问题

Src/FrmMain.cs

@@ -1001,17 +1001,13 @@ namespace Kivii.Sample.ImageUploader
 
         private void CanonForm_DownloadCompletely(object sender, EventArgs e)
         {
-            var filePath = (string)sender;
+            var stream = (Stream)sender;
 
-            if (filePath.IsNullOrEmpty()) return;
-
-            if(!File.Exists(filePath)) return;
-
-            FileInfo fileInfo = new FileInfo(filePath);
+            //FileInfo fileInfo = new FileInfo(stream);
             // 捕获当前帧
-            Bitmap bitmap = System.Drawing.Image.FromFile(filePath) as Bitmap;
+            Bitmap bitmap = new Bitmap(stream);
             if (bitmap == null) return;
-            var picName = $"{DateTime.Now.ToString("mmssfff")}_{fileInfo.Name}";
+            var picName = $"{DateTime.Now.ToString("mmssfff")}";
             string reportId = string.Empty;
             if (currentReport != null)
             {