Dapper Tutorial Dapper Contrib - Data Annotation - Write

Description

The Write attribute specifies whether a field is writable or not in the database.

  • It must be applied to any properties that we do not want a column in a database table.
  • For example, you might have a property in your entity class, but it does not need to be stored.
  • You can apply the Write attribute to a property that you do not want to create a column of in the database.

The following example shows how to use the Write attribute on a property in which you don't want to store its value in the database table.

[Table("Invoice")]
public class InvoiceContrib
{
	[Key]
	public int InvoiceID { get; set; }

	public string Code { get; set; }
	public InvoiceKind Kind { get; set; }

	[Write(false)]
	[Computed]
	public string FakeProperty { get; set; }
}

using (var connection = My.ConnectionFactory())
{
	connection.Open();

	var invoice = connection.Get<InvoiceContrib>(1);

	// The FakeProperty is null
}