To rename a column, replace the above generated migration with the following: migrationBuilder.RenameColumn( If the above migration is applied as-is, all your customer names will be lost. ![]() For example, if you rename a property from Name to FullName, EF Core will generate the following migration: migrationBuilder.DropColumn(ĮF Core is generally unable to know when the intention is to drop a column and create a new one (two separate changes), and when a column should be renamed. One notable example where customizing migrations is required is when renaming a property. While EF Core generally creates accurate migrations, you should always review the code and make sure it corresponds to the desired change in some cases, it is even necessary to do so. You can also change the namespace independently of the directory using -Namespace. Alternatively, you can specify the directory at generation time as follows: New migrations are created as siblings of the last migration. ![]() You are free to move Migrations files and change their namespace manually. The timestamp in the filename helps keep them ordered chronologically so you can see the progression of changes. Used to determine what changed when adding the next migration.
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