EntityInstantFeedbackSource.KeyExpression Property

Specifies the name of the key property.

Namespace: DevExpress.Data.Linq

Assembly: DevExpress.Data.v23.2.dll

NuGet Package: DevExpress.Data

Declaration

C#

[DefaultValue("")]
public string KeyExpression { get; set; }

VB.NET

<DefaultValue("")>
Public Property KeyExpression As String

Property Value

Type	Default	Description
String	String.Empty	A String value that specifies the key property name.

Remarks

Usually, the KeyExpression property specifies the name of the property mapped to the primary key column in the database.

You can modify the KeyExpression property value within the EntityInstantFeedbackSource.GetQueryable event handler, via the GetQueryableEventArgs.KeyExpression property.

To specify multiple columns of a composite key, pass the comma-separated or semicolon separated list of key column names to this property. For instance: “KeyPart1;KeyPart2;KeyPart3“.