Need to set TextTemplatingFileGenerator as Custom Tool on *.tt files or Visual Studio 2019 won't build your Entity Framework models

Question

I just discovered that Visual Studio 2019 wouldn't rebuild my Entity Framework models. Even if I right clicked the EDMX diagram file and selected, "Run Custom Tool" nothing would happen. Lot of posts here and elsewhere said to also Run Custom Tool on each *.tt file. But that wasn't possible since the "Custom Tool" property of all *.tt files was not set. At first I figured I'd use the same custom tool indicated on my .edmx file, which is EntityModelCodeGenerator.

Solution: The *.tt files need to have TextTemplatingFileGenerator set as their Custom Tool.

Answer 1

Set the Custom Tool property of each of your *.tt files to TextTemplatingFileGenerator.