Entity Framework Extensions Ignore OnUpdate Expression

Description

The IgnoreOnUpdateExpression allows you to ignore some columns when the BulkUpdate method is executed.

The following example ignores the CreatedDate property when a bulk update operation is performed.

using (var context = new EntityContext())
{	
    var customers = context.Customers.ToList();
    customers.ForEach(x => 
    { 
        x.Name += "_Updated"; 
        x.Description += "_Updated"; 
        x.CreatedDate = DateTime.Now; 
        x.ModifiedDate = DateTime.Now; 
        x.IsActive = false; 
    });

    context.BulkUpdate(customers, options => 
    {
        options.IgnoreOnUpdateExpression = customer => new 
        {
            customer.CustomerID,  
            customer.CreatedDate
         };
    });
}

Try it: EF Core | EF6

  • It will update data in all the columns except for the CreatedDate column because the CreatedDate property is specified in IgnoreOnUpdateExpression.
Last updated: 2025-06-24
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