Dapper Plus Also Bulk Delete

Description

The Dapper Plus AlsoBulkDelete method allows to DELETE entities in a database table or a view using a lambda expression.

The lambda expression uses the entity or the IEnumerable from the last Bulk[Action] or ThenBulk[Action] chained method. (The action can be an insert, update, delete or merge operation).

Also Bulk Delete Async

To apply chaining with the AlsoBulkDeleteAsync method, you need to initiate with async operation and then chain this method.

Each database operation performed asynchronously requires an await.

In this C# example, we demonstrate deleting a list of order and and their associated invoice from our database asynchronously:

await (await connection.BulkDeleteAsync(orders)).AlsoBulkDeleteAsync(order => order.Invoice);

Also Bulk Delete with "One to One" Relation

The Dapper Plus AlsoBulkDelete method allows deleting a related item with a "One to One" relation.

//Delete an order and also the related invoice.
connection.BulkDelete(order)
          .AlsoBulkDelete(order => order.Invoice);

//Delete a list of orders and also the related invoice to every order.
connection.BulkDelete(orders)
          .AlsoBulkDelete(order => order.Invoice);

Also Bulk Delete with "One to Many" Relation

The Dapper Plus AlsoBulkDelete method allows deleting related items with a "One to Many" relation.

//Delete an order and also all related items.
connection.BulkDelete(order)
          .AlsoBulkDelete(order => order.Items);

//Delete a list of orders and also all related items to every order.
connection.BulkDelete(orders);
          .AlsoBulkDelete(order => order.Items);

Also Bulk Delete and Mixed Relation

The Dapper Plus AlsoBulkDelete method allows deleting related item(s) with any relation.

//Delete an order, also all related items and also the related invoice.
connection.BulkDelete(order)
          .AlsoBulkDelete(order => order.Items, order => order.Invoice);

//Delete a list of orders, also all related items to every order and also the related invoice 
//to every order.
connection.BulkDelete(orders)
          .AlsoBulkDelete(order => order.Items, order => order.Invoice);

Also Bulk Delete Chain Action

The Dapper Plus AlsoBulkDelete method allows chaining multiple bulk action methods.

//Delete an order and also all related items. Delete an invoice and also all related invoice items.
connection.BulkDelete(order)
          .AlsoBulkDelete(order => order.Items)
          .BulkDelete(invoice)
          .AlsoBulkDelete(invoice => invoice.Items);
//Delete a list of orders and also all related items to every order. Delete a list of invoices and 
//also all related items to every invoice.
connection.BulkDelete(orders)
          .AlsoBulkDelete(order => order.Items)
          .BulkDelete(invoices)
          .AlsoBulkDelete(invoice => invoice.Items);
Last updated: 2024-04-24
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