DiagramExtension.GetBatchUpdateResult<TNode, TKey>(MVCxDiagramNodeUpdateValues<TNode, TKey>) 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.v19.2.dll

Declaration

C#

public static ActionResult GetBatchUpdateResult<TNode, TKey>(
    MVCxDiagramNodeUpdateValues<TNode, TKey> nodeUpdateValues
)
    where TNode : new()

VB.NET

Public Shared Function GetBatchUpdateResult(Of TNode As New, TKey)(
    nodeUpdateValues As MVCxDiagramNodeUpdateValues(Of TNode, TKey)
) As ActionResult

Parameters

Name	Type	Description
nodeUpdateValues	MVCxDiagramNodeUpdateValues<TNode, TKey>	An object that stores information about updated diagram nodes.

Type Parameters

Name	Description
TNode	The type of node.
TKey	The type of node 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 = "LinearUpdate" };

    settings.Mappings.Node.Key = "ID";
    settings.Mappings.Node.ParentKey = "ParentID";
    settings.Mappings.Node.Text = "DepartmentName";

    settings.SettingsAutoLayout.Type = DevExpress.Web.ASPxDiagram.DiagramAutoLayout.Tree;

}).Bind(Model).GetHtml()

C#

public ActionResult LinearUpdate(MVCxDiagramNodeUpdateValues<EditableDepartment, int> nodeUpdateValues) {
    foreach(var item in nodeUpdateValues.Update)
        DepartmentProvider.Update(item);
    foreach(var itemKey in nodeUpdateValues.DeleteKeys)
        DepartmentProvider.Delete(itemKey);
    foreach(var item in nodeUpdateValues.Insert) {
        var insertedItem = DepartmentProvider.Insert(item);
        nodeUpdateValues.MapInsertedItemKey(item, insertedItem.ID);
    }
    return DiagramExtension.GetBatchUpdateResult(nodeUpdateValues);
}

Online Demo

Diagram - Tree from Linear Data Structure