LinqToSql Plus ColumnInputOutputExpression


Gets or sets columns to map with the direction InputOutput.

The key is required for operations such as BulkUpdate and BulkMerge.

context.BulkMerge(list, options => 
        options.ColumnInputOutputExpression = entity => new {entity.ID, entity.Code}


The ColumnInputOutputExpression option lets you choose specific properties in which you want to perform the bulk operations.

By example, when importing a file, you may have not data on all properties.

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