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 End-User Documentation
WPF Controls > DevExpress.Xpf.Grid > TreeListView > KeyFieldName
View this topic on docs.devexpress.com (Learn more)

TreeListView.KeyFieldName Property

Gets or sets the name of the service field in a data source that contains unique values. This is a dependency property.

Namespace:DevExpress.Xpf.Grid
Assembly:DevExpress.Xpf.Grid.v18.2.dll

Expanded Syntax

Property value

Type: String
A System.String value that specifies the name of the data source key field.

Expanded Remarks

To display data in a tree, a data source should contain two additional fields. The first field must contain unique values. Its name is specified by the KeyFieldName property. The second field must contain values that indicate parent nodes for the current node. Its name is specified by the ParentFieldName property. Columns bound to these fields are called service columns.

Note

The data types of the data source fields specified by the KeyFieldName and ParentFieldName properties, must be the same. These values (key and parent) cannot be equal for a node.

To learn more, see Binding to Self-Referential Data Structure.

Expanded See Also

TreeListView Class
TreeListView Members
DevExpress.Xpf.Grid Namespace
ParentFieldName
RootValue
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