Hello @Rishitha Juvvala (SX/ETD12-MM) ,
Welcome to Microsoft Q&A forum.
Are these files(.usecasediagram/.sequencediagram/modelproj) related to UML?
If so, the UML designers have been removed since Visual Studio 2017. Kindly see this document: UML designers have been removed.
Also kindly suggest how to create new design diagrams in visual studio 2022.
There are many tools(dependency diagrams, code maps and DGML, class diagrams/class designer) for diagrams, but I’m not sure which one meets your requirements. Perhaps you can check their descriptions firstly.
Best regards,
Tianyu
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