Question

我最近将视觉工作室更新为2017 Enterprise。我曾经用过DevExpress v15.1 今天，我将DevExpress升级到版本18.1，并且在构建.Net MVC5应用程序解决方案时，出现以下错误

“ XtraReport”类型是在不是参考。您必须添加对程序集的引用 'DevExpress.XtraReports.v15.1，版本= 15.1.8.0，文化=中性， PublicKeyToken = b88d1754d700e49a'。

上述错误位于ReportController.cs

我检查了项目下的引用文件夹，发现其中有DevExpress.XtraReports.v18.1。

此错误可能是什么原因？。

谢谢您的帮助。

Answer 1

根据消息，XtraReport仍引用其DLL程序集的旧版本：

Traceback (most recent call last):
  File "C:\Users\Ajit\AppData\Local\conda\conda\envs\phd\lib\site-packages\tornado\web.py", line 1592, in _execute
    result = yield result
  File "C:\Users\Ajit\AppData\Local\conda\conda\envs\phd\lib\site-packages\tornado\gen.py", line 1133, in run
    value = future.result()
  File "C:\Users\Ajit\AppData\Local\conda\conda\envs\phd\lib\site-packages\tornado\gen.py", line 1141, in run
    yielded = self.gen.throw(*exc_info)
  File "C:\Users\Ajit\AppData\Local\conda\conda\envs\phd\lib\site-packages\notebook\services\sessions\handlers.py", line 73, in post
    type=mtype))
  File "C:\Users\Ajit\AppData\Local\conda\conda\envs\phd\lib\site-packages\tornado\gen.py", line 1133, in run
    value = future.result()
  File "C:\Users\Ajit\AppData\Local\conda\conda\envs\phd\lib\site-packages\tornado\gen.py", line 1141, in run
    yielded = self.gen.throw(*exc_info)
  File "C:\Users\Ajit\AppData\Local\conda\conda\envs\phd\lib\site-packages\notebook\services\sessions\sessionmanager.py", line 79, in create_session
    kernel_id = yield self.start_kernel_for_session(session_id, path, name, type, kernel_name)
  File "C:\Users\Ajit\AppData\Local\conda\conda\envs\phd\lib\site-packages\tornado\gen.py", line 1133, in run
    value = future.result()
  File "C:\Users\Ajit\AppData\Local\conda\conda\envs\phd\lib\site-packages\tornado\gen.py", line 1141, in run
    yielded = self.gen.throw(*exc_info)
  File "C:\Users\Ajit\AppData\Local\conda\conda\envs\phd\lib\site-packages\notebook\services\sessions\sessionmanager.py", line 92, in start_kernel_for_session
    self.kernel_manager.start_kernel(path=kernel_path, kernel_name=kernel_name)
  File "C:\Users\Ajit\AppData\Local\conda\conda\envs\phd\lib\site-packages\tornado\gen.py", line 1133, in run
    value = future.result()
  File "C:\Users\Ajit\AppData\Local\conda\conda\envs\phd\lib\site-packages\tornado\gen.py", line 326, in wrapper
    yielded = next(result)
  File "C:\Users\Ajit\AppData\Local\conda\conda\envs\phd\lib\site-packages\notebook\services\kernels\kernelmanager.py", line 160, in start_kernel
    super(MappingKernelManager, self).start_kernel(**kwargs)
  File "C:\Users\Ajit\AppData\Local\conda\conda\envs\phd\lib\site-packages\jupyter_client\multikernelmanager.py", line 110, in start_kernel
    km.start_kernel(**kwargs)
  File "C:\Users\Ajit\AppData\Local\conda\conda\envs\phd\lib\site-packages\jupyter_client\manager.py", line 259, in start_kernel
    **kw)
  File "C:\Users\Ajit\AppData\Local\conda\conda\envs\phd\lib\site-packages\jupyter_client\manager.py", line 204, in _launch_kernel
    return launch_kernel(kernel_cmd, **kw)
  File "C:\Users\Ajit\AppData\Local\conda\conda\envs\phd\lib\site-packages\jupyter_client\launcher.py", line 128, in launch_kernel
    proc = Popen(cmd, **kwargs)
  File "C:\Users\Ajit\AppData\Local\conda\conda\envs\phd\lib\subprocess.py", line 709, in __init__
    restore_signals, start_new_session)
  File "C:\Users\Ajit\AppData\Local\conda\conda\envs\phd\lib\subprocess.py", line 997, in _execute_child
    startupinfo)
FileNotFoundError: [WinError 2] The system cannot find the file specified

通常会出现此问题，因为升级后Project Converter无法更新'DevExpress.XtraReports.v15.1, Version=15.1.8.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a'相关参考。在这种情况下，您可以手动删除对旧程序集的所有引用（版本15.1），然后添加对新程序集的引用（版本18.1）。

还要确保web.config文件具有以下示例中的这些程序集信息（XtraReport指示修订号）：

如果上述解决方案失败，请尝试导航至<add assembly="DevExpress.XtraReports.v18.1, Version=18.1.X.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" /> <add assembly="DevExpress.XtraReports.v18.1.Web, Version=18.1.X.0, Culture=neutral, PublicKeyToken=b88d1754d700e49a" />（X:\Windows\assembly代表系统驱动器号），将程序集安装到全局程序集缓存（GAC），然后将所有新的DevExpress程序集复制到该程序集文件夹（包括X），如this issue中所述。

CS0012类型“ XtraReport”在未引用的程序集中定义

1 个答案: