DiagramDataBindingControllerBase.KeyMember Property

Specifies the name of the data field that identifies the data item.

Namespace: DevExpress.XtraDiagram

Assembly: DevExpress.XtraDiagram.v24.2.dll

Declaration

C#

[DiagramCategory(DiagramCategory.Data)]
public virtual string KeyMember { get; set; }

VB.NET

<DiagramCategory(DiagramCategory.Data)>
Public Overridable Property KeyMember As String

Property Value

Type	Description
String	A System.String value.

Remarks

Use the DiagramDataBindingControllerBase.KeySelector property to define a custom logic for choosing the data field that identifies the data item (e.g., when binding to data with multiple types of data objects).

Related GitHub Examples

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the KeyMember property.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

How-to-bind-diagram-items-Position/CS/DXSample/Form1.cs#L16

diagramDataBindingController1.DataSource = viewModel.Items;
diagramDataBindingController1.KeyMember = "Id";
diagramDataBindingController1.ConnectorsSource = viewModel.Connections;

VB.NET

How-to-bind-diagram-items-Position/VB/DXSample/Form1.vb#L16

diagramDataBindingController1.DataSource = viewModel.Items
diagramDataBindingController1.KeyMember = "Id"
diagramDataBindingController1.ConnectorsSource = viewModel.Connections