Skip to main content

DiagramExtension.GetBatchUpdateResult<TNode, TNodeKey, TEdge, TEdgeKey>(MVCxDiagramNodeUpdateValues<TNode, TNodeKey>, MVCxDiagramEdgeUpdateValues<TEdge, TEdgeKey>) Method

Returns the specified result to the client side after processing a callback in an action specified by the BatchUpdateRouteValues property.

Namespace: DevExpress.Web.Mvc

Assembly: DevExpress.Web.Mvc5.v24.1.dll

NuGet Package: DevExpress.Web.Mvc5

Declaration

public static ActionResult GetBatchUpdateResult<TNode, TNodeKey, TEdge, TEdgeKey>(
    MVCxDiagramNodeUpdateValues<TNode, TNodeKey> nodeUpdateValues,
    MVCxDiagramEdgeUpdateValues<TEdge, TEdgeKey> edgeUpdateValues
)
    where TNode : new()
    where TEdge : new()

Parameters

Name Type Description
nodeUpdateValues MVCxDiagramNodeUpdateValues<TNode, TNodeKey>

An object that stores information about updated diagram nodes.

edgeUpdateValues MVCxDiagramEdgeUpdateValues<TEdge, TEdgeKey>

An object that stores information about updated diagram edges.

Type Parameters

Name Description
TNode

The type of node.

TNodeKey

The type of node key.

TEdge

The type of edge.

TEdgeKey

The type of edge key.

Returns

Type Description
ActionResult

The result of an action method.

Remarks

@Html.DevExpress().Diagram(settings => {
    settings.Name = "Diagram";

    settings.BatchUpdateRouteValues = new { Controller = "DataBinding", Action = "NodesAndEdgesUpdate" };

    settings.Mappings.Node.Key = "ID";

    settings.Mappings.Edge.Key = "ID";
    settings.Mappings.Edge.FromKey = "FromID";
    settings.Mappings.Edge.ToKey = "ToID";

}).Bind(Model.Objects, Model.Connections).GetHtml()
        public ActionResult NodesAndEdgesUpdate(MVCxDiagramNodeUpdateValues<EditableFlowObject, int> 
        nodeUpdateValues, MVCxDiagramEdgeUpdateValues<EditableFlowConnection, int> edgeUpdateValues) {
            foreach(var item in nodeUpdateValues.Update)
                WorkflowDataProvider.UpdateObject(item);
            foreach(var itemKey in nodeUpdateValues.DeleteKeys)
                WorkflowDataProvider.DeleteObject(itemKey);
            foreach(var item in nodeUpdateValues.Insert) {
                var insertedItem = WorkflowDataProvider.InsertObject(item);
                nodeUpdateValues.MapInsertedItemKey(item, insertedItem.ID);
            }

            foreach(var item in edgeUpdateValues.Update)
                WorkflowDataProvider.UpdateConnection(item);
            foreach(var itemKey in edgeUpdateValues.DeleteKeys)
                WorkflowDataProvider.DeleteConnection(itemKey);
            foreach(var item in edgeUpdateValues.Insert) {
                var insertedItem = WorkflowDataProvider.InsertConnection(item);
                edgeUpdateValues.MapInsertedItemKey(item, insertedItem.ID);
            }

            return DiagramExtension.GetBatchUpdateResult(nodeUpdateValues, edgeUpdateValues);
        }

Online Demo

Diagram - Node and Edge Data Sources

See Also