Delete by Criteria

Syntax

DeleteAll(filter);

Arguments

filter

Expression<Func<T, bool>>

Criteria by which the records of the repository should be filtered. This parameter must not be empty.

null

Description

Deletes all records from a repository that fulfill the criteria specified in the parameter filter.

Example

Example 1: Filtering records by only one criterion

The following program illustrates the function call with only one criterion:

repo.DeleteAll(x => x.ProductID == "ADAM-890-BTO");

Function will delete all the records from the repository that have "ADAM-567-BTO" as Production ID.

Example 2: Filtering records by multiple criteria:

The following program illustrates the function call with multiple criteria:

repo.DeleteAll(x => x.ProductID == "ADAM-567-BTO" 
                 && x.Quantity > 10 
                 && x.IsUrgent == true);

Function will load all the records from the repository that have "ADAM-567-BTO" as Production ID, have a Quantity of more than 10 and are Urgent.