图片占用问题

SmartScan/ScanWork.cs

@@ -4,6 +4,7 @@ using Model;
 using System;
 using System.Collections.Generic;
 using System.Drawing;
+using System.IO;
 using System.Linq;
 using System.Threading.Tasks;
 using System.Windows.Forms;
@@ -242,9 +243,9 @@ namespace SmartScan
                 });
                 if (string.IsNullOrEmpty(filename))
                     return false;
-
                 Bitmap bmp = null;
-                bmp = new(filename);
+
+                bmp = ObjConversion.ReadImageFile(filename); ;
                 workCodeInfo = BLLCommon.cameraVision.GetBarCode(bmp);
                 Common.frmMain.Invoke(delegate ()
                 {