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DiagramEditOperation.ChangeConnection Property

Identifies the ChangeConnection operation.


static readonly ChangeConnection: string

Property Value

Type Description

Returns “ChangeConnection”.


The operation parameter returns the ChangeConnection value if the RequestEditOperation event fired for the following reasons:

  • user is about to link or delink a connector from a shape,
  • the ASPxDiagram control is updating a visibility state of a connection point.

Use the reason parameter to identify the reason why the event fired.

<dx:ASPxDiagram ID="Diagram" runat="server" Width="100%" Height="600px">
    <ClientSideEvents RequestEditOperation="onRequestEditOperation" />
function onRequestEditOperation(s, e) {
    if(e.operation === DiagramEditOperation.ChangeConnection) {
        var shapeType = e.args.shape && e.args.shape.type;
        if(shapeType === "root" && e.args.connectorPosition === "End") {
            if(e.reason !== DiagramRequestEditOperationReason.CheckUIElementAvailability)
                showWarning("The 'Development' shape cannot have an incoming connection.");
            e.allowed = false;

The RequestEditOperation event does not fire for the ChangeConnection operation if the AllowChangeConnection property is set to false.

See Also