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我有一个旧项目，是在 .NET 4.5 上使用 VS2019 和 Entity Framework 6 构建的。我们首先使用数据库来生成代码。效果非常好。

但是，我们刚刚开始使用 VS2022 V17.6.2，我需要使用新表更新应用程序，因此，我将表添加到model.edmx，运行.tt文件，令我惊讶的是，它显示了如下错误：

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Error     \nRunning transformation: System.NullReferenceException: Object reference not set to an instance of an object.\n\nat Microsoft.VisualStudio.TextTemplatingD21DB4521EFD493FAE41A9CE9DA80C875F3084552987498BD518713BDE91D14AF116D5B591FBF7D992E37AB98D0755C27E1BD3D907AED6618E5F11743F78068A.GeneratedTextTransformation.DynamicTextTransformation.get_GenerationEnvironment() in C:\\Program Files\\Microsoft Visual Studio\\2022\\Community\\Common7\\IDE\\Extensions\\Microsoft\\Entity Framework Tools\\Templates\\Includes\\EF6.Utility.CS.ttinclude:line 1928\n   at Microsoft.VisualStudio.TextTemplatingD21DB4521EFD493FAE41A9CE9DA80C875F3084552987498BD518713BDE91D14AF116D5B591FBF7D992E37AB98D0755C27E1BD3D907AED6618E5F11743F78068A.GeneratedTextTransformation.EntityFrameworkTemplateFileManager..ctor(Object textTransformation) in C:\\Program Files\\Microsoft Visual Studio\\2022\\Community\\Common7\\IDE\\Extensions\\Microsoft\\Entity Framework Tools\\Templates\\Includes\\EF6.Utility.CS.ttinclude:line 1665\n   at Microsoft.VisualStudio.TextTemplatingD21DB4521EFD493FAE41A9CE9DA80C875F3084552987498BD518713BDE91D14AF116D5B591FBF7D992E37AB98D0755C27E1BD3D907AED6618E5F11743F78068A.GeneratedTextTransformation.EntityFrameworkTemplateFileManager.VsEntityFrameworkTemplateFileManager..ctor(Object textTemplating) in C:\\Program Files\\Microsoft Visual Studio\\2022\\Community\\Common7\\IDE\\Extensions\\Microsoft\\Entity Framework Tools\\Templates\\Includes\\EF6.Utility.CS.ttinclude:line 1784\n   at Microsoft.VisualStudio.TextTemplatingD21DB4521EFD493FAE41A9CE9DA80C875F3084552987498BD518713BDE91D14AF116D5B591FBF7D992E37AB98D0755C27E1BD3D907AED6618E5F11743F78068A.GeneratedTextTransformation.EntityFrameworkTemplateFileManager.Create(Object textTransformation) in C:\\Program Files\\Microsoft Visual Studio\\2022\\Community\\Common7\\IDE\\Extensions\\Microsoft\\Entity Framework Tools\\Templates\\Includes\\EF6.Utility.CS.ttinclude:line 1629\n   at Microsoft.VisualStudio.TextTemplatingD21DB4521EFD493FAE41A9CE9DA80C875F3084552987498BD518713BDE91D14AF116D5B591FBF7D992E37AB98D0755C27E1BD3D907AED6618E5F11743F78068A.GeneratedTextTransformation.TransformText() in C:\\test\\Code\\ConsoleAppTest\\TestModel.tt:line …

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