28 lines
1.8 KiB
Markdown
28 lines
1.8 KiB
Markdown
#### [Pf2eModel](index.md 'index')
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### [Pf2eModel\.Migrations](Pf2eModel.Migrations.md 'Pf2eModel\.Migrations').[\_1](_1.md 'Pf2eModel\.Migrations\.\_1')
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## \_1\.Down\(MigrationBuilder\) Method
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Builds the operations that will migrate the database 'down'\.
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```csharp
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protected override void Down(Microsoft.EntityFrameworkCore.Migrations.MigrationBuilder migrationBuilder);
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```
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#### Parameters
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<a name='Pf2eModel.Migrations._1.Down(Microsoft.EntityFrameworkCore.Migrations.MigrationBuilder).migrationBuilder'></a>
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`migrationBuilder` [Microsoft\.EntityFrameworkCore\.Migrations\.MigrationBuilder](https://docs.microsoft.com/en-us/dotnet/api/Microsoft.EntityFrameworkCore.Migrations.MigrationBuilder 'Microsoft\.EntityFrameworkCore\.Migrations\.MigrationBuilder')
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The [Microsoft\.EntityFrameworkCore\.Migrations\.MigrationBuilder](https://docs.microsoft.com/en-us/dotnet/api/Microsoft.EntityFrameworkCore.Migrations.MigrationBuilder 'Microsoft\.EntityFrameworkCore\.Migrations\.MigrationBuilder') that will build the operations\.
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### Remarks
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That is, builds the operations that will take the database from the state left in by
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this migration so that it returns to the state that it was in before this migration was applied.
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This method must be overridden in each class that inherits from [Microsoft\.EntityFrameworkCore\.Migrations\.Migration](https://docs.microsoft.com/en-us/dotnet/api/Microsoft.EntityFrameworkCore.Migrations.Migration 'Microsoft\.EntityFrameworkCore\.Migrations\.Migration') if
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both 'up' and 'down' migrations are to be supported. If it is not overridden, then calling it
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will throw and it will not be possible to migrate in the 'down' direction.
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See [Database migrations](https://aka.ms/efcore-docs-migrations 'https://aka\.ms/efcore\-docs\-migrations') for more information and examples. |