EntityServerModeSource.KeyExpression Property

Gets or sets the key expression.

Namespace: DevExpress.Data.Linq

Assembly: DevExpress.Data.v21.2.dll


public string KeyExpression { get; set; }

Property Value

Type Default Description


A String value that specifies the key expression.


In most instances, the KeyExpression property specifies the key field name:

efServerModeSource1.KeyExpression = "CustomerID";

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“.

The following code snippets (auto-collected from DevExpress Examples) contain references to the KeyExpression property.


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See Also