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

C#

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

VB.NET

Public Shared Function GetBatchUpdateResult(Of TNode As New, TNodeKey, TEdge As New, TEdgeKey)(
    nodeUpdateValues As MVCxDiagramNodeUpdateValues(Of TNode, TNodeKey),
    edgeUpdateValues As MVCxDiagramEdgeUpdateValues(Of TEdge, TEdgeKey)
) As ActionResult

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

Razor

@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()

C#

        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